Manual_sincronizador_SYN3000

SYN3000

Description

SYN 3000 Digital Synchronizer and Synchronizing Check Relay

Description

Revision:

7

Author:

08.01.2002

Riss

Checked:

08.01.2002

Klanacsky

Approved:

08.01.2002

Reitinger

Registered:

08.01.2002

Hantsch

First Edition: 22.10.1999

Edition: 08.01.2002

Cech

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Description

SYN3000

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Description

SYN3000

CAUTION Installing, commissioning and operating of this product may be performed by thorougly trained and specialized personnel * only. We explicitly will not take any responsibility for any damage on our products caused by improper installation, configuration and handling. Internal modifications must solely be carried out by specialized personnel authorized by VA TECH SAT GmbH & Co / Department PE.

* Definition: Specialized personnel, when authorized and properly instructed, may perform following tasks.

• • • •

Installing, mounting, commissioning and operating of the apparatus and the system when familiar with.

Switching operations according to the relevant Safety Standards for medium and high voltage switchgear, i.e. plant energizing and de-energizing, preventive isolation, safety earthing and securing, when instructed.

Maintenance and application of safety gear according to Standard Rules and Regulations.

First Aid after extensive training.

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Description

SYN3000

Table of Contents

1. Introduction................................................................................................................... 7 2. Circuit Diagram SYN3000............................................................................................. 7 3. SYN3000 Models ........................................................................................................... 8 3.1. Digital Synchronizing Relay................................................................................................8 3.2. Digital Synchronizing Check Relay .................................................................................... 8 3.3. Selection Inputs................................................................................................................... 8

4. Design Features............................................................................................................ 9 4.1. Optimum Plant Conformity ................................................................................................. 9 4.1.1. 5+1 Synchronizing Modes............................................................................................... 9 4.1.2. 2 or 10 Selection Inputs .................................................................................................. 9 4.1.3. Flexible Installation ......................................................................................................... 9 4.2. Safety Considerations....................................................................................................... 10 4.2.1. Dual Channel Feature................................................................................................... 10 4.2.2. Parameter Setting Check for All Synchronizing Modes................................................. 10 4.2.3. Password Function ....................................................................................................... 10 4.2.4. Performance Indication................................................................................................. 10 4.2.5. Performance Signalling................................................................................................. 10 4.2.6. Measured Value Indication ........................................................................................... 10 4.3. User Facilities .................................................................................................................... 11 4.3.1. Integrated Operating Elements..................................................................................... 11 4.3.2. Menu Operated Parameter Setting ............................................................................... 11 4.3.3. LC-Display .................................................................................................................... 11 4.3.4. Serial Communication Interface.................................................................................... 11 4.4. Additional Functions at Software Versions Starting at 2.19 .......................................... 12 4.4.1. Maximum Permissible Phase Angle.............................................................................. 12 4.4.2. Impulse Length for CB Closing Command.................................................................... 12 4.4.3. First Slip Measuring ...................................................................................................... 12 4.4.4. Voltage Adaptation by Software.................................................................................... 13 4.4.5. Speed Commands ........................................................................................................ 13 4.4.6. Activation Time ............................................................................................................. 13

5. Functional Description............................................................................................... 13 5.1. Operating Sequence of the SYN3000 ............................................................................... 15 5.2. User Control of the SYN3000 ............................................................................................ 16 5.2.1. LED Indication .............................................................................................................. 16 5.3. Menu Controlled Environment.......................................................................................... 19

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5.4. Structure of the Main Menu .............................................................................................. 20 5.5. Structure of the Sub Menu “Records“ ............................................................................. 21 5.5.1. [1] Last Synchronizing and Display of Measured Values............................................... 21 5.5.2. [2] Setting Values and Display of Parameter Settings................................................... 23 5.5.3. [3] Current Value, Display of Actual Measured Values.................................................. 25 5.6. Structure of the Sub Menu “Parameter Settings“ ........................................................... 26 5.6.1. [1] CB Closing Time, Measuring the CB closing Time................................................... 26 5.6.2. [2] Date and Time, Setting the System Time ................................................................ 29 5.6.3. [3] Synchronizing, Synchronizing Modes, Configuring the Synchronizing Parameters .. 30

6. Mounting of the SYN3000 .......................................................................................... 39 6.1. Scope of Supply ................................................................................................................ 39 6.2. External Wiring .................................................................................................................. 40 6.3. Terminal Connections .......................................................................................................40

7. Technical Data ............................................................................................................ 47 7.1. Electrical Data.................................................................................................................... 47 7.2. Case and Dimensions ....................................................................................................... 48 7.3. Parameter Setting Ranges ................................................................................................ 48

8. Error Annunciation List.............................................................................................. 49 9. Model Selection for Ordering .................................................................................... 53 10.Typical Application: Generator to bus system synchronizing with speed- and voltage regulation control.......................................................................................... 54 11.Outline Drawing:......................................................................................................... 56 12.Remarks to the Accuracy........................................................................................... 57 13.SYN3000 - SETTING TABLE....................................................................................... 61 14.PLEASE NOTE ! .......................................................................................................... 62

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Description

SYN3000

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Description

SYN3000

1. Introduction This descriptive literature deals with the SYN3000 synchronizing device as well as the SYN3000 synchronizing check relay. The SYN3000 synchronizing check relay represents a partial assembly of the SYN3000 synchronizing device and basically differs only by the reduced operating mode potential. Further details are outlined in Chapter 3, SYN3000 models.

The synchronizing relay SYN3000, from VA TECH SAT company, is exclusively applying microprocessor techniques. The device is employed to synchronize and parallel synchronous or asynchronous three phase or single phase systems being either in an energised and/or deenergised state. It is an improved and re-designed model of the analog auto synchronizing relay SYN2000. This product development was made possible due to the long time experience and team work of our design and research staff applying the most advanced microprocessor techniques available today.

2. Circuit Diagram SYN3000 The diagram is applicable for the synchronizing device as well as for the synchronizing check relay. For economic considerations one of the SYN3000 models available is provided with selection inputs 9 and 10 only.

Circuit Diagram SYN3000

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Description

SYN3000

3. SYN3000 Models The SYN3000 can be delivered in the following two relay models:

3.1. Digital Synchronizing Relay This model includes all features of the SYN3000, e.g. speed and voltage regulation, etc. There are up to five different synchronizing modes for altogether ten different parameter settings blocks available. In addition the circuit breaker closing time function i.e. CB dead time compensation is also included.

3.2. Digital Synchronizing Check Relay This model contains part of the SYN3000 features such as the synchronizing check operating mode and measuring of the circuit breaker closing time. The relay is applied as a manual closing interlock when paralleling two systems or as an additional safety interlock in automatic transfer control circuits.

Both models are can be delivered with either 2 or 10 selection inputs.

Due to the application of modern microprocessor techniques both models have basically the same hardware, the difference lying mainly in the software, e.g. in case of the synchronizing check relay only part of the possible operating functions are supported.

For the various plant configurations on site many different operating functions are required. To cater for these requirements the analog type synchronizing equipment was composed of several modules with each providing a different function applicable to the plant.

Also the digital SYN3000 is made up of several function systems, however in this case on a software basis containing all necessary possible functions in the memory, i.e. an EEPROM. When loading the integrated menus, the desired functions are selected by the User and are stored together with the synchronizing parameters in the relay. Thus the system configuration may be carried out on site with consideration of all the required plant operating conditions. Further any necessary site modifications of the parameters can be carried out with ease by authorised personnel.

3.3. Selection Inputs Especially for applications restricted to one unit the above SYN3000 models are also available with two selection input channels 9 and 10.

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SYN3000

Description

4. Design Features 4.1. Optimum Plant Conformity 4.1.1. 5+1 Synchronizing Modes To apply the SYN3000 to all required plant configurations the relay is provided with 5 synchronizing operating modes. From the synchronizing mode selected the corresponding related settings have to be configured. A further, sixth, synchronizing mode is provided for measuring the circuit breaker closing time.

Mode 1: Mode 2: Mode 3:

Mode 4: Mode 5: Mode 6:

Generator to bus bar or power line Synchronous or asynchronous power systems or lines Synchronous or asynchronous power systems or lines similar to mode 2, however with additional dead line or dead bus charging Synchronizing check for manual closing operations Fast automatic transfer of bus bar systems Measuring of the circuit breaker closing time

4.1.2. 2 or 10 Selection Inputs To optimise plant performance the SYN3000 is equipped with 10 selection input and an additional selection input for fast automatic bus bar transfer operations. Thus it is possible to apply a single relay to several synchronizing control circuits, e.g. Unit 1, Unit 2, etc., and/or synchronizing modes to the very same synchronizing control location, i.e. Unit synchronizing to bus bar system, synchronizing check function, etc.

For each of the selection inputs specific parameter setting values can be configured, i.e. synchronizing mode, voltage level and frequency level limits, permissible voltage and frequency difference, CB closing time, i.e. CB dead time compensation, etc. When selecting a selection input, the corresponding setting parameters are loaded from the internal memory and the synchronizing operation is performed according to these parameters.

Simultaneously, it must be ensured that the external control circuit is applying the correct running and incoming voltages to the SYN3000 and to connect the SYN3000 control outputs to the corresponding equipment, e.g. circuit breaker closing coil and speed- and voltage regulator.

4.1.3. Flexible Installation The SYN3000 is produced in the 19" rack housing technique with following possibilities for mounting: Mounting into an existing 19" rack Flush panel mounting When installing the relay into an existing 19" rack the space required is half a rack, i.e. two relays can be mounted into a single rack.

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Description

SYN3000

4.2. Safety Considerations 4.2.1. Dual Channel Feature The program sequence for determining the voltage, frequency and phase angle is executed on a multi-redundant basis with cross check plausibility control. Further, the Circuit Breaker Closing Command is initiated by the ÂľProcessor via an additional fail-safe circuit operating the relay outputs. This feature prevents false synchronizing due to hardware component failure.

For especially high safety requirements a dual channel device can be delivered. Two SYN3000 are combined to one unit with an additional supervision board DCS3. Both synchronizing relays are configured with the same parameter settings and the supervision board is monitoring the simultaneousness of the control and closing commands. The final control outputs are set after extensive verification via additional contacts on the DCS3 board.

The additional display and indications on the DCS3 are showing the respective state of operation.

Due to the modular design, existing synchronizing schemes can be upgraded with the DCS3 at any time required.

4.2.2. Parameter Setting Check for All Synchronizing Modes Configuring the parameters is supervised by the software and only plausible setting values are accepted, whereas wrong programming and invalid parameters will be rejected. The parameter setting range is designed to prevent false synchronizing due to inadequate settings.

4.2.3. Password Function To protect against unauthorised operation the SYN3000, a 5 digit access code is provided. However, the set parameters and the measured values for synchronizing operations can be viewed any time without the use of the access code. But modification of the various parameter settings can only be performed after entering the correct password. On delivery from our Works the manufacturing default setting for all new synchronizing relays is 00000.

4.2.4. Performance Indication A 16 LED display is provided at the relay front showing the performance state and alarm indications. This indication provides information at any time about the operating state of the SYN3000, i.e.

Ready, Remote Control Activated, etc.

4.2.5. Performance Signalling The remote signal indications "SYN3000 Ready" and "SYN3000 Alarm" are potential free contacts wired to terminals at the rear of the relay. By a combination of the signals "SYN3000 Not Ready" and "SYN3000 No Alarm", the signal "SYN3000 Selected" can be derived since the "SYN3000 Ready" signal is reset when selecting the relay. Also refer to chapter 6.3, "Terminal Connections".

4.2.6. Measured Value Indication On a 4 digit LC-display at the front, the most important currently measured values are displayed, i.e. V1, V2, f1, f2 and the phase angle Ď• .

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4.3. User Facilities 4.3.1. Integrated Operating Elements All operating and display facilities are located at the front of the relay. The main feature being that for configuration of the parameters no additional external programming aid is necessary.

4.3.2. Menu Operated Parameter Setting The password as well as the synchronizing mode and all parameters are entirely menu operated via the 4 row LC-display and the integrated key pad. After configuration of the parameters and with a subsequent safety confirmation, the parameter settings are permanently stored into the EEPROM and retained even in case of supply failure. The access code can be modified by the password User at any time.

4.3.3. LC-Display Without entering the access code, the set parameters and the synchronizing mode can be checked. Further, the five relevant measured values of the current synchronizing operation can be displayed.

Via the key pad also the data about the last synchronizing sequence can be recalled whereby two sets of data are displayed.

The first set of data indicates the actual measured values at the instant of initiating the CB closing command and the second one displays the actual measured value at the time the CB poles have reached the closed position.

Measured Value Display: • • • • • • •

Voltage System 1 Voltage System 2 Frequency System 1 Frequency System 2 Phase Angle Selected Selection Input Set Synchronizing Mode

4.3.4. Serial Communication Interface With the visualization software SYN-WIN you can via the serial communication port at the relay front the stored data of the most recent synchronizing operation can be loaded to a PC and displayed. Likewise all parameters can be (pre-)programmed by PC with SYN-WIN, saved to a file and loaded to the SYN3000 via the serial communication port.

The visualising software SYN-WIN requires at least Windows95 or NT4.0. It displays the current synchronizing process in real time and also shows the recorded curves of the last synchronization.

On a 50 Hz basis the memory for the recorded curves of the SYN3000 can accommodate a presynchronizing period of 4 minutes and stores the measured values of the running and incoming voltages, their frequency and phase angle and the logic state of the variables “ ∆V Low“, “ ∆f Low“, “ ∆ϕ Low“ and the speed and voltage Raise and Lower control commands with a sampling rate of 12,5 values per second.

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SYN3000

Description

A demo-version of the SYN-WIN software is also available displaying all the above functions with the exception of the serial interconnection to the SYN3000.

4.3.4.1.

Caution Notice to SYN-WIN

The SYN-WIN software provides the display of the actual measured values and also an image of a synchronoscope. Although the synchronoscope looks deceivingly real it can in no way whatsoever be taken as a guide for manual synchronizing.

WARNING The timing may not be real time and the displayed measured values and the pointer of the synchroscope may differ from the actual values and position.

4.4. Additional Functions at Software Versions Starting at 2.19 At software versions ≥ V2.19 additional functions are implemented to increase the safety and the comfort for operation. The software version of the SYN3000 is shown on the LC-display (main menu).

4.4.1. Maximum Permissible Phase Angle The SYN3000 has an accuracy of ±0,5° (due to the internal measuring). Now the accuracy at the calculation of the phase angle has been increased. The permissible phase angle now can be also set to 0°, in steps of 1° (in the old version minimum setting was 1°). By this the maximum accuracy at CB closing is ±0,5° (at 0° setting), ±1,5° (at 1° setting), etc. The closing times based on this accuracy are calculated in chapter 12, "Remarks to the Accuracy".

4.4.2. Impulse Length for CB Closing Command At the old version the impulse length for CB closing command could be set with a minimum length of 1 sec. Now this command is fixed to a length of 0,7 sec. Only in mode 4 (synchrocheck) the contact closes for the whole period, when the synchronization conditions are fullfilled. Merely at earlier reset by selection input the closing time may be shorter.

See chapter 5.1, "Operating Sequence of the SYN3000".

4.4.3. First Slip Measuring If in mode 1 (generator to bus bar or power line) the same voltage is switched to both sides of the SYN3000 by mistake, the old software has gives a CB closing command, as by this wiring failure the synchronization conditions seem to be fullfilled. In the new software such external wiring failures can be recognized and no wrong closing command can be applied. This is realized be the implementation of the following condition: After selection of the SYN3000 the slip must be at least ≥ 0,025 Hz for one moment for activating the calculation.

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4.4.4. Voltage Adaptation by Software In some applications it may happen that the level of the two VT-voltages for the SYN3000 are not 100% the same. The reason can be in different VT-ratio or in incorrect matching of the VT primary voltage to the rated generator or line voltages. Now with the SYN3000 the voltage of system 2 (line) can be multiplied with a factor for adaptation. This factor ranges from 0,8 - 1,2 (80% - 120%).

An adaptation of the phase angle by software is for safety reason not provided (too dangerous at incorrect parameter input!).

4.4.5. Speed Commands The speed commands have been improved in two ways: 1. The turbine governours react very sensible to speed signals. So the range for the parameter input has been refined. Now it ranges from 0,1... 20 sec./Hz (in steps of 0,1 sec./Hz) (possible input is 1...200 sec./10 Hz), with a maximum pulse length of 2,5 sec.

2. If the slip regulation regulates to a slip of 0, it can happen that the synchronoscope stays at a phase angle with a slip of 0. Then it takes much time to sychronize the generator. We have implemented now the function that the slip is regulated to a fixed small value greater than 0.

Remark to 2: The SYN3000 regulates to a slip of 0,03 Hz over-synchronous. That means, also in the range of 0 to 0,03 Hz over-synchronous it applies "speed raise-commands" to get this slip.

The length of the speed commands is given by the difference of the actual slip to 0,03 Hz. Therefore, for example, at 0,06 Hz the "lower"-commands have the same length as at 0 Hz ("raise"commands). That means that the pulse length is unsymmetrical to the slip zero point.

Exception: When the maximum frequency difference +dfmax is set to a value below 0,06 Hz, the set point for the slip regulation is not 0,03 Hz, but +dfmax/2 (see also chapter 5.6.3.9, "Definition of Setting Parameters").

4.4.6. Activation Time The activation time of the SYN3000 has now a minimum setting of 1 second (in steps of 1 sec. up to 25 sec.). This ensures that the SYN3000 gets valid voltages when the SYN3000 selection and voltage application are started at the same time.

5. Functional Description To cater for any variety of switchgear at site the SYN3000 is equipped with 10 selection inputs and thus can universally be employed for service requirements. The selection inputs are initiating the entire functions of the SYN3000. Before synchronizing is carried out each input channel in use has to be programmed once with the relevant set of parameters applicable to the plant-specific plant.

The setting parameters comprise the synchronizing mode and its associated set of parameters, e.g. voltage level, frequency difference, etc. When terminating the setting procedure, all data are permanently stored into the memory and the selection input is ready for operation.

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Description

SYN3000

On the assumption that the SYN3000 is connected to an auxiliary supply all the time, the selection inputs are actuating the relay functions. As long as an input is set, the SYN3000 is evaluating its corresponding VT input signals and is producing the necessary raise and lower control commands and provides the CB close command or the closing interlock clearance when the system conditions are within the set limits.

When resetting the selection input selection the synchronizing function of the SYN3000 is immediately terminated. With the range of parameters provided for each synchronizing mode the SYN3000 can be adapted to all plant configurations.

As soon as the auxiliary power supply is switched onto terminals 13, 14 the SYN3000 is "Ready" for operation which is indicated by the "Ready" LED at the front, meaning that the relay can be initialised via the selection inputs. A synchronizing operation is started by selection, i.e. setting of a selection input. This procedure will alter the relay’s ready state to the operation state and simultaneously the "Ready" LED indication disappears and the "Selected" LED will start flashing. The flashing will continue until CB closing has occurred and is then converting into a steady-on indication. The LED’s "∆V Low", "∆f Low", "∆ϕ Low" provide information when the setting value is approached. When all three LED’s are energised the synchronizing conditions are fulfilled and either the CB closing command or the closing interlock clearance is given. The Closing command or interlock clearance is also indicated by a LED. Every time when the phase angle is 0° or when the synchronization conditions are fullfilled, a CB closing command is produced. That means that in one selection period several commands can be given if one is not successful. The length of this command is fixed to 0,7 sec. Only in mode 4 (synchronizing check) the command closes for the whole period, while the synchronization conditions are fullfilled.

At synchronous systems or when the slip is below 0,008 Hz, a closing command is produced every 5 sec.

Selecting a selection input will initiate the associated safety time delay on pick up tW. This time delay is provided to consider any possible delays of connecting the external VT voltages and clearance condition of the external synchronizing control circuitry. After this time delay the SYN3000 begins to evaluate the running and incoming voltage signals of its measuring inputs and is giving the resulting CB closing command or providing the interlock clearance for closing, as soon as the system conditions are within the set limits.

Immediately after remote control selection and during the time delay tW the SYN3000 is loading the corresponding parameter set from its memory.

The main component of this parameter set is the so-called synchronizing operating mode. This mode defines which set of systems are to be connected together. All other setting parameters are depending on the synchronizing mode. This way 10 different plant locations with their associated parameter settings and various types of plant equipment can be catered for. For example, the selection input 1 may represent a generator to be synchronized to a bus bar system and input 2 a bus bar system to be connected to a power line. Each selection input can be configured to one of the possible 5 synchronizing operating modes.

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SYN3000

Description

5.1. Operating Sequence of the SYN3000 The following time based diagram is showing the operating sequence of the SYN3000 for all synchronizing modes.

Selection input Activate: VT voltages, CB-Close circ. raise/lower circuitry Activation time

tw

VT voltages are evaluated

Synchronizing Duration

Sync.Mode 1: raise/lower commands

Reset by selection input

"CB-Close"command tCB-Close CB poles closed

t t1

t2

t3

t4

The diagram is read from top to bottom.

1. The selection input is selected via the external synchronizing control circuit and the time delay tW is initiated at the instant of t1.

2. Subsequently or simultaneously, but at the latest by the end of the safety delay tW , the VT running and incoming voltages and the CB control circuit has to be connected to the SYN3000.

3. The time required to connect the external control circuitry must be in all cases within the set duration of time delay tW. 4. After the safety time delay has elapsed, i.e. at the instant of t2 the SYN3000 is starting to process the VT input voltages. When the selection input Synchronizing Mode 1 was configured for a generator to bus bar synchronizing mode the raise and lower control commands will be given in accordance to the system conditions.

5. At the time of t3 all synchronizing conditions are fulfilled and the SYN3000 is activating the CB close control output. Simultaneously the CB control command delay tCB-Close is started.

6. At the instant of t4 the CB auxiliary contact is confirming that the circuit breaker is in the closed position thereby resetting the selection input selection via the external synchronizing control circuit.

The de-activation of the control input will immediately terminate all operations of the SYN3000 which subsequently is resetting the CB control command output "CB-Close". The delay in deenergising tCB-Close determines the CB close command pulse length (0,7 sec.).

To prevent false synchronizing the procedures described have strictly to be observed. The omission of one or both VT voltage signals during the active remote control selection of a synchronizing mode with live and/or dead bus conditions, i.e. synchronizing mode 3 and 4 may lead to false synchronizing.

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SYN3000

Description

5.2. User Control of the SYN3000 The front of the SYN3000 contains all control- and indication facilities necessary for commissioning and service operation.

LED-Service state indication

Serial communication port for remote setting of parameters and measured values display

4-row LC-display for actual measured values and setting values as well as supporting menu

Key pad for parameter configuration and relay functions setting

5.2.1. LED Indication For a quick reference and without activating any additional keys the SYN3000 is provided with altogether 16 LED’s displaying the operating state of the relay.

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SYN3000

Description

Left Column LED Indication LED Colours

Denomination

Definition

Green

Indication: Ready

The SYN3000 is connected to the auxiliary power supply and ready to receive a selection input. The self-monitoring program is signalling that all systems go. The LED will be de-energised when recognising an external or internal fault and/or a selection input is selected.

Green

Indication: Active

The selection input is selected and during the time between selection and CB close command the indication is flashing. After the close command is given the LED changes to a steady light, thereby indicating that CB closing has been performed but the external synchronizing control circuit is still not de-activated.

Yellow

Command: Frequency increase

During the synchronizing mode, "Generator to Bus Bar" the control commands to the turbine speed regulator are given. The LED is energised when the speed raise output is activated.

(digital synchronizing mode)

Yellow

During the synchronizing mode, "Generator to Bus Bar" the control commands to the turbine speed regulator are given. The LED is energised when the speed lower output is activated.

Command: Frequency decrease (digital synchronizing mode)

Yellow

During the synchronizing mode, "Generator to Bus Bar" the control commands to the voltage regulator are given. The LED is energised when the voltage raise output is activated.

Command: Voltage increase (digital synchronizing mode)

Yellow

During the synchronizing mode, "Generator to Bus Bar" the control commands to the voltage regulator are given. The LED is energised when the voltage lower output is activated.

Command: Voltage decrease (digital synchronizing mode)

Green

Indication: System 1 active

Green

Indication: System 2 active

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From the VT voltage of system 1 a pulse signal of equal phase angle is produced. The frequency of this pulse signal is halved and independent of the SYN3000 operating state is energising the LED indication. The LED will light up for voltages above approximately 30V VT voltage, indicating also the activation of the frequency and phase angle measuring processes.

From the VT voltage of system 2 a pulse signal of equal phase angle is produced. The frequency of this pulse signal is halved and independent of the SYN3000 operating state is energising the LED indication. The LED will light up for voltages above approximately 30V VT voltage, indicating also the activation of the frequency and phase angle measuring processes.

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SYN3000

Description

Right Column LED Indication LED colour

Denomination

Definition

Green

Indication: ∆V Low

The SYN3000 is selected and the voltage difference of the two systems to be synchronized is within the programmed limits.

Green

Indication: ∆f Low

The SYN3000 is selected and the frequency difference of the two systems to be synchronized is within the programmed limits.

Green

Indication: ∆ ϕ Low

The SYN3000 is selected and the phase angle between the two systems to be synchronized is within the set limits by also considering the CB closing time.

Indication:

After selecting the SYN3000 a pre-set safety time delay has to elapse to ensure that all measured inputs are already in a stable state.

Red

Initial time delay Red

Indication: Deactivation- out of time

Yellow

Red

Command: CB Close

This LED indicates the closing of the CB close output contacts.

In synchronizing mode 4, "Synchronizing Check" the LED shows the CB close interlock clearance whereby the output contacts are closed.

Indication:

When synchronizing cannot be achieved within a set time by the SYN3000 this LED is being energised and the synchronizing sequence is terminated until the relay is selected again.

Total sync. time >> Red

After the SYN3000 has given the CB close command it has to be de-activated within a certain time to return to the "Ready" state. When this time is reached the LED will be energised.

During this period any operation of the SYN3000 is blocked and the device has to be de-activated in order to enable a further synchronizing sequence.

Indication: Warning / Error

Any internal or external abnormal conditions recognised by the SYN3000 will energise this LED and at the same time the type of fault is indicated on the LC-display.

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SYN3000

Description

Serial Interface The relay front is provided with a 9 pole D-SUB-MIN-socket for connection of an external PC. This serial communication port enables by software SYN-WIN to read and to display the actual values, the setting parameters and the synchronizing procedures from the SYN3000. Likewise all parameters can be (pre-)programmed by PC with SYN-WIN, saved to a file and loaded to the SYN3000 via the serial communication port.

LC-Display To facilitate operation and reading data for the User, the SYN3000 is equipped with a 4-row LCdisplay. In conjunction with the key pad the SYN3000 can be operated and configured without the aid of a hand terminal or a PC. The communicating language can either be English or German and is set at our Works.

Key Pad For ease of operation and not having multi-function keys the SYN3000 is provided with a 10-key pad and 6 control keys. Thus the setting parameters can be entered directly without effort. The design of the key pad ensures an exact point of operation with a minimum amount of pressure applied for definite key operation.

5.3. Menu Controlled Environment The menu operation is basically divided into two levels. First in a service level, which includes the records and enables reading of setting parameters and measured values without influencing the functional availability of the device. Second in a safety level menu, containing the setting parameters which can only be accessed by entering the correct password.

Basic Selection: SYN3000, Vx.xx, ´xx -- STANDBY -[1] Event Record [2] Change Settings The first line shows the actual software version including the creating year (Vx.xx, ´xx). Further more the actual software version can be read out with the visualization software SYN-WIN. With the basic selection, in addition to the LED indications also the actual state of the SYN3000 is displayed.

Following operating modes are possible: - INITIALISED After connection of the SYN3000 to the auxiliary supply the microprocessors undergo special check sequences in order to verify the correct state of the components. Then the internal communication is initiated and the SYN3000 either displays the Ready state or indicates a Remote Control Selection.

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SYN3000

Description

-- READY -The SYN3000 has the auxiliary voltage supply and is not selected via a remote control channel. In this operating mode the actual measured values cannot be displayed, since without any remote control selection the incoming VT secondary voltages are not available. Only this particular operating mode permits the modification of setting parameters, because otherwise a change of parameters may adversely affect a synchronizing sequence already in progress. The Ready indication indicates the correct service function of the components as well as that no fault alarm has developed.

- SELECTEDA selection input has been activated an via the sub menu “Actual Values“ the actual measured values are shown. Simultaneously to the LC-display the LED “Selected“ indicates by flashing that the SYN3000 has had a remote selection but no CB closing command has been given yet. After initiation of the CB close order the LED will convert to a steady-on indication and via sub menu “Last Synchronizing“ the characteristic values of this synchronizing sequence can be sampled.

5.4. Structure of the Main Menu

[1]

SYN3000, Vx.xx, ´xx -- STANDBY -[1] Event Record [2] Change Settings

[1] Last Synchroniz.

[2] Act. Settings [3] Act. Values [ESC] Main Menue

[2]

SYN3000, Vx.xx,

´xx

Password:.....

[5 digit password]

[1] Get C.B. delay [2] Date & Time [3] Setting Paramet.

[SKIP] Next Page...

[SKIP]

[4] Actual Values [5] Change Password [SKIP] Previous Page [ESC] Main Menu

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SYN3000

Description

The user control of the SYN3000 is divided into a protected and an unprotected access level. The un-protected level, i.e. Records, can be entered any time and even during a synchronizing control sequence the settings and measured values can be called up without endangering the plant.

The protected level, i.e. settings, can only be accessed when the SYN3000 is in a Ready state and the correct password has been entered. This mode enable to measure the CB closing time and modification of the setting parameters.

5.5. Structure of the Sub Menu “Records“ [1] Last Synchroniz.

[2] Act. Settings [3] Act. Values [ESC] Main Menue The sub menu can be entered without the application of an access code and therein only measured values and setting parameters can be displayed. Any modification of the set values or influence onto functionality of the SYN3000 is prevented.

Description of the Various Functions Via the [1], [2], [3] key the particular functions can be called up and the [ESC] key gets you back into the main menu.

5.5.1. [1] Last Synchronizing and Display of Measured Values One of the special features of the SYN3000 offers the possibility to review and assess the performance of the most recent synchronizing operation with the aid of the recorded measured values.

During the whole synchronizing sequence the current measured values of the running and incoth ming voltages, the frequency and the phase angle are updated each 6 measuring period, which is equivalent to 0,12 seconds on a 50 Hz basis.

When all synchronizing conditions are fulfilled the SYN3000 will produce a circuit breaker closing command and at this instant all relevant actual measured values are written into a reserved register and an internal timing stage is started. The time delay of this stage is equal to the prior set CB dead time compensation of the particular remote input channel. After this time has expired a new set of measured values is stored into the memory.

Thus two sets of measured values are available, i.e. the ones at the instant of the CB closing command and the others when the CB poles have just closed.

The requirements to perform the measuring at the instant of the actual CB poles closing are as follows.

• The auxiliary CB contacts must not be of the early make type in order not to prematurely terminate the remote control selection thus also disconnecting the VT voltages.

• The auxiliary supply of the SYN3000 must not be disconnected when terminating the synchronizing operation.

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SYN3000

Description

After calling up the function the LC-display will show following contents.

LST SYNCHRONIZING: on: -06-94 at: 17:53:21,24 17:53:21,74 [SKIP] This is the first of three pages and provides information about the date and time of the last synchronizing sequence by the SYN3000. th

In the example above the last synchronization was carried out on Wednesday 15 June 1994 at 17:00 hours, 53 minutes, 21 seconds and 24 hundredth of a second. In this configuration the CB dead time compensation is set to 500 ms with a resulting time display in the last line of 17:00 hours, 53 minutes, 21 seconds and 74 hundredth of a second, i.e. 500 ms later.

When the auxiliary supply of the SYN3000 was switched off since the last synchronizing operation and restored again the memory has been erased and the display on this page will only show zero readings instead of time and date.

The next page, page 2, is attained by operating the [SKIP] key.

Page: 2, Measured Values at the Time of CB Closing Order CH:2 ,SM:1, Page:2 V1=117V, F1=49.98Hz V2=117V,..F2=49.96Hz PHI=5 Deg [SKIP] The first line indicates the selected selection input number and the configured synchronizing mode. The following two lines are showing the actual measured values of voltage and frequency at the instant the command is given and the last line displays the actual phase angle at the same moment.

5.5.1.1.

Display Legend

CH

Selection input used from 1 to 10

SM

Configured synchronizing mode from 1 to 5

Page: 2

Measured values at the instant of CB closing command

V1

Measured value of voltage system 1

F1

Measured value of frequency system 1

V2

Measured value of voltage system 2

F2

Measured value of frequency system 2

PHI

Phase displacement between the two systems in Degree electrical

The [SKIP] key will get you to the third and last page.

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SYN3000

Description

Page: 3, Measured Values at Instant of CB Poles Closed C.B. CLOSED, Page:3 V1=117V, F1=49.98Hz V2=117V,..F2=49.95Hz PHI=0 Deg [ESC] This page is displaying all measured values encountered at the exact moment of the circuit breaker poles closing, i.e. the actual system connection.

5.5.1.2.

Display Legend

Page: 3

Measured values at the instant of actual CB closing

V1

Measured value of voltage system 1

F1

Measured value of frequency system 1

V2

Measured value of voltage system 2

F2

Measured value of frequency system 2

PHI

Phase displacement between the two systems in Degree electrical

The [ESC] key is pressed to return to the main menu. For ease of operation all menu levels are entered in one direction only. In order to reach a preceding page all menu selections have to be selected again.

5.5.2. [2] Setting Values and Display of Parameter Settings To accommodate several synchronizing locations into one SYN3000 the relay is provided with 2 or 10 selection inputs. When selecting such a control input the SYN3000 is activated and a synchronizing sequence commences according to the set parameters of this particular channel. To outline the internal structure of the SYN3000 again, there is a brief description about the parameter setting procedure as follows.

For all synchronizing modes in common there is a super- set of entries. Each synchronizing mode is using a defined mask menu to only display the setting prompts relevant for this mode of operation.

By this feature all parameter setting values can be displayed for each selection input without impairing the functionality of the SYN3000. After selecting this function the LC-display will be as indicated below.

REMOTE CONTROL SEL. Select Channel: 0 [1-10]

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[ESC]

[OK]

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SYN3000

Description

This window will request the entry of the selection input number desired to be viewed. The possible range is from 1 to 10 and to finalise the selection procedure the [OK] key is operated. To abort the function and to return to the main menu the [ESC) key is activated.

The following description of the operating procedures gives an example for programming selection input 2 and synchronizing mode 1, i.e. generator to bus bar synchronizing.

The illustration below shows the actual synchronizing mode for the selected selection input.

-REMOTE CHANNEL: 2Sync.mode: 1 # Generator/Bus Bar [ESC] [OK] For quick reference, each synchronizing mode is provided with a fixed number. The allocation of these numbers are as follows.

1 2 3 4 5 6

Generator / Bus Bar Synchronous / Asynchronous Dead System / Live System Synchronizing Check Bus Bar Auto Transfer CB Closing Time

Depending on the configured synchronizing mode the displays are according to the windows below.

CHANNEL:2 /SYNC.M.=1 SYS1: Max.Syn.Volt.

V1max=130V, (110) [ESC] [OK] The first line of the display and of the subsequent displays always indicates the current selection input and the programmed synchronizing mode.

The last display of the menu sequence offers the choice to once again review all entries.

CHANNEL:2 /SYNC.M.=1 Do you want to review your inputs?

[SKIP]=No [OK]=Yes By operating the [OK] key the display will return to the preceding menu option again which for this example is the “SYS1: Max.Sync.Volt.“ parameter. On the other hand however, the [SKIP] key will proceed one level back into the sub menu “Records“.

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SYN3000

Description

5.5.3. [3] Current Value, Display of Actual Measured Values An additional feature of the SYN3000 enables the simultaneous display of all actual measured values, precondition being that a selection input of the SYN3000 is selected. Otherwise the VT circuits may not be connected due to the interlocks of the external control circuit.

When choosing this function when the SYN3000 is not selected following display will appear.

SYN3000, Vx.xx, ´xx No remote channel active!

[ESC] Main Menue The display will remain as above as long as there has not been any remote control selection but will immediately change as indicated below as soon as the SYN3000 is selected.

ACT.VAL´S,Channel:2 V1=117V, F1=49.97Hz V2=118V, F2=49.94Hz Phaseangle=+144Deg.

To also display the current values for rapid processes the measured value are updated about four times per second.

The values shown above are an example of a synchronizing location having 120 V VT secondary voltage. To revert to the sub menu “Records“ again the [ESC] key has to be operated.

In case of external or internal faults the window will immediately change to the corresponding fault display.

Example of an indication when losing one of the VT voltages during a synchronizing operation: SYN3000, Vx.xx, ´xx --INTERNAL ERROR-Code:0014, Type: 8 [ESC] to quit For more details of all fault displays and the required action to be taken please refer to the Fault Directory.

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SYN3000

Description

5.6. Structure of the Sub Menu “Parameter Settings“ SYN3000, Vx.xx,

´xx

Password:.....

[5 digit password]

[1] Get C.B. delay [2] Date & Time [3] Setting Paramet.

[SKIP] Next Page...

[SKIP]

[4] Actual Values [5] Change Password [SKIP] Previous Page [ESC] Main Menu

In order to prevent accidental modification of the parameter settings all menu options which can impair the functionality of the SYN3000 are protected by a password. Upon delivery from our Works this access code set to “00000“ and can be replaced by a desired five digit number at any time.

Description of the various Functions Via the [1], [2], [3], [4], [5] keys the respective menu options are called up. The [SKIP] key will change the menu pages and with the [ESC] key the main menu is entered again.

5.6.1.

[1] CB Closing Time, Measuring the CB closing Time

The possibility to measure the CB closing time described in this Chapter represents a powerful feature of the SYN3000. The measuring method can be applied at any time without interfering with the switchgear configuration to determine the CB closing time including the time required for any auxiliary relays associated with the closing control circuit. Instead of an extensive test circuit needing the CB auxiliary contacts for starting and stopping of the timer, just using the system voltages to exactly measure the closing time proved to be a much more reliable and accurate method.

For measuring with the SYN3000 one system on each side of the circuit breaker has to be deenergised from the start. And with the CB in open position the other side is alive with the nominal system voltage. Via this special menu option a CB closing command is given by the SYN3000 and the time interval measured between the closing initiation and the presence of a voltage with equal phase angle on the previously de-energised system and displayed in the menu.

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SYN3000

Description

Following procedures have to be applied in order to carry out the measurements: • All necessary safety precautions for a manual closing of the circuit breaker have to be taken.

• The particular selection input has already been set to synchronizing mode 6, i.e. the CB closing time measuring.

• One system side of the CB is de-energised whereas the other one has rated voltage, i.e. with a minimum of 30 V secondary voltage.

• The remote selection input of the relevant synchronizing location is activated.

Operating the [1] key will result in the display below containing a caution notice.

GET C.B. DEAD TIME !!WARNING!!WARNING!!

C.B. WILL BE ACTIVATED! [SKIP] The caution notice emphasises that when proceeding further a CB closing command will be initiated to the selected synchronizing location.

The [SKIP] key will convert from the above display to a safety prompt.

SECURITY CHECK Enter the number: 18534721 >> ........

[ESC] This safety request will prevent an accidental initiation of a CB closing command when browsing through the menu and shall further bring to attention which menu option has been selected.

The safety prompt will request you to enter the digits “18534721“. The procedure can be aborted at any time with the [ESC] key. Once the number sequence has been entered correctly following display will appear.

GET C.B. DEAD TIME Press [OK] to close Circuit breaker [ESC] [OK] to close When now operating the [OK] key the SYN3000 will produce a CB close command and awaits the occurrence of the voltage with equal phase angle on the previously de-energised system. For this it does not matter which of the two systems is alive or not.

The [ESC] key will terminate the process and will revert to the “Parameter Setting“ sub menu.

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SYN3000

Description

After having activated the [OK] key the SYN3000 is undergoing several safety checks. Thereby it is verified that only one of the systems is in an energised state, the corresponding selection input configured correctly and the SYN3000 input selected.

When these pre-conditions are not fulfilled following display is shown.

GET C.B. DEAD TIME --TEST ABORTED!-No rem. channel act.

[ESC] The window above indicates that the SYN3000 was not properly selected at the time of initiating the command. However, this does not exclude some more and other types of faults. Without the remote control selection neither the CB closing command is attained nor the VT voltages are connected are connected for measuring. Therefore measuring the CB closing time cannot be performed.

Further possible fault displays can appear.

GET C.B. DEAD TIME --EXTERNAL ERROR-BOTH SYSTEMS ENERG. [ESC] Before the SYN3000 actually commences the CB closing command several safety checks are started. Among others it is verified that only one system is energised. Otherwise the closing time cannot be determined or else there is the possibility that the two systems are not in a synchronous condition and thus the synchronizing computations do not confirm synchronous conditions. When voltage on the two systems has been detected the operating procedures are terminated by the SYN3000 and above message will be displayed. Most of the times the causes are either incorrect wiring or a fault in the test circuit when doing the measurements and immediately after selection the selection input is de-activated.

When everything correct then following display will appear.

GET C.B. DEAD TIME --TEST IN PROGRESS-Please wait..

[ESC] The SYN3000 has carried out the CB closing sequence and is expecting a voltage with equal phase angle on the previously de-energised system Depending on whether the measuring was successful or not following windows will be displayed.

GET C.B. DEAD TIME --TEST ABORTED!-Out of time [ESC] The User control facility of the SYN3000 is provided with a completely independent microprocessor system which is controlling the whole menu environment. To activate a CB close command

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SYN3000

Description

from this menu option an extensive data exchange is commencing between the User control facility and the SYN3000 main processor. Even minute discrepancies during the safety cross-checks will result in an excess time error and the above display will appear. The reasons for this may be electromagnetic interference via the inputs and outputs of the SYN3000 or an internal error.

Should the fault display persist during several re-tries the SYN3000 must be returned to our works for further extensive tests.

GET C.B. DEAD TIME --BAD RESULT-tcbdead=out of range [ESC] The maximum permissible setting value for the CB closing time is 0,5 seconds. Although the SYN3000 is waiting for 2,55 second for the appearance of the second system voltage it will display values above 0,5 seconds null and void.

GET C.B. DEAD TIME Elapsed timevalue tcbdead= msec.

Channel: [ESC] For a successful measurement with a valid CB closing time the above display is shown. The value of the closing time is indicated in milliseconds and will be rounded off to the nearest 10 ms. The bottom line shows the number of the selection input used. The measuring result will not be stored and it is recommended to carry out several successive tests for each synchronizing location to verify the time. The mean value of the test results is taken for configuring the corresponding control input.

The [ESC] key will place you one level higher into the "Parameter Setting“ menu.

5.6.2.

[2] Date and Time, Setting the System Time

Among others the SYN3000 is provided with battery-buffered time module, a NV-time module, for the current time and date. These values are only used to indicate the time and date of the last synchronizing operation.

This menu enables setting and modifying of the time and date. Operating the [2] key will result in the following display.

DATE: dd-mm-yy Actual: 21-05-94 New: 01-01-92 [01-31] [OK] [ESC] The second line shows the actual date. Changing the values is carried out one after the other, meaning that fist the day, then the then the month and at last the two digits for the year is entered.

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SYN3000

Description

The bottom line is indicating the possible setting values. For example the window above displays a setting range of 1 to 31 for the day. The [OK] key will place the values configured into a temporary memory and the cursor will months position. If the values from the SYN3000 at the New: position are not overwritten they will be kept during subsequent storing.

When all three date positions have been set and terminated with the [OK] key following display will appear.

TIME: hh:mm:ss Actual: 09:30:21 New: 00:00:00 [00-23] [OK] [ESC] The second line indicates the current time at which the menu option was entered. Again, as indicated on the previous display each particular position is configured and terminated with the [OK] key. At first the hours, then the minutes and at last the seconds are offered for setting whereby the value for the seconds will be ignored. Enter the time desired which shall finally be stored.

Irrespective of whether you wish to modify the time or the date both of them have to be set again for storing.

The last request is displayed as follows.

DATE & TIME Make inputs permanently?

[SKIP]=No [OK]=Yes

The [OK] key will enter the new values into the clock memory whereas the [SKIP] key will by-pass this storage process and the old values will remain valid. Thus this sub menu is terminated and the display will revert to the “[2] Parameter Setting“ menu.

5.6.3.

[3] Synchronizing, Synchronizing Modes, Configuring the Synchronizing Parameters

This sub menu enables the set up of the synchronizing mode and depending on this mode all other associated parameters to be configured are listed in the menu. After entering the last setting value there is a choice of either repeating the setting procedure or to save the parameters. If inbetween the setting procedure is terminated by the [ESC] key the old values remain valid.

Synchronizing Modes As described previously, the SYN3000 is provided with 2 or 10 selection inputs enabling the execution of 2 or 10 different synchronizing operations. When the plant requires several synchronizing locations, it has to be ensured that the interchange of incoming and outgoing signals between the plant and the SYN3000 is correct, i.e. the running and incoming voltage signals, the speed and voltage raise/lower commands and the CB closing command, and has reached a steady state within the set waiting period.

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Description

SYN3000

The external synchronizing control connecting these circuits to the SYN3000 has to be of a reliable and fail-safe nature. When selecting a selection input the corresponding setting parameters are internally loaded in the SYN3000, defining the synchronizing operating mode and the parameters for the subsequent synchronizing action. The relay itself cannot determine whether the external circuits are switched correctly to its terminals. This has to be ensured by the external synchronizing control circuit.

For each selection input one of 5+1 synchronizing modes can be selected. The synchronizing modes possible are described as follows.

5.6.3.1.

Synchronizing Mode 1: Generator to Bus Bar or Power Line Model: Digital Synchronizing Relay The generator voltage System 1 and the bus bar voltage System 2 is compared by the SYN3000.

Via the speed and voltage raise/lower output commands to the speed regulator and voltage regulator respectively, the frequency difference and the voltage difference is controlled to zero.

When the frequency- and voltage difference limits are approached and, by taking into consideration the CB closing time, the computed phase angle is zero, and the voltage values of System 1 and System 2 are within the set range, the circuit breaker close command is given. Live and/or dead system synchronizing cannot be carried out in this operating mode.

The CB closing command is given several times in one selection period, every time when the phase angle is 0째. When the systems are synchronous or when the slip is below 0,008 Hz, every 5 sec. a closing command is produced.

5.6.3.2.

Synchronizing Mode 2: Synchronous or Asynchronous Power Systems or Lines Model: Digital Synchronizing Relay The SYN3000 offers the means to parallel synchronous and/or asynchronous power systems.

When a frequency difference is measured between the two systems the SYN3000 is computing the instant of time where the phase angle is zero degrees by taking into account the preconfigured CB closing time and sets the CB close order accordingly. With power systems having a remote point of interconnection there exists no frequency difference and the requirement for CB closing depends on the PHImax. angle setting parameter.

As mentioned previously, CB closing is carried out when the setting limits for the voltage- and frequency difference are not exceeded and the computed phase angle, with consideration of the CB operating time, is zero. CB closing is prevented when either one or both voltage systems are below 30 V. In order to initiate a CB closing control, both system voltages have to be within the set range of 30 V - 150 V. The CB closing command is given several times in one selection period, every time when the phase angle is 0째. When the systems are synchronous or when the slip is below 0,008 Hz, every 5 sec. a closing command is produced.

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Description

SYN3000

5.6.3.3.

Synchronizing Mode 3: Synchronous or Asynchronous Power Systems.

Similar to Mode 2, however with Additional Dead Line/Bus Charging Model: Digital Synchronizing Relay As with the synchronizing mode 2 either synchronous or asynchronous systems can be paralleled and the parameter setting values, voltage- and frequency difference are considered. CB closing will be performed when these parameters are within the set limits by also taking into account the phase angle and the CB closing time. Each running and incoming system can be configured for an upper and lower system voltage limit for which within this range the CB closing operation can be actuated. Further, the system dead condition can be defined whereby below this setting value the power system is considered to be de-energised and the paralleling operation can be carried out.

The CB closing command is given several times in one selection period, every time when the phase angle is 0°. When the systems are synchronous or when the slip is below 0,008 Hz, every 5 sec. a closing command is produced.

5.6.3.4.

Synchronizing Mode 4: Synchronizing Check for Manual Closing Model: Digital Synchronizing Relay and Digital Synchronizing Check Relay Contrary to the previous synchronizing modes, including mode 5, i.e. automatic transfer operations of bus bars, the CB close command is not extended during the synchronizing operation.

In this operating mode the SYN3000 is not initiating the CB close command but is functioning as an interlock facility for an external Sequence Control System or a Manual Close Operation. The relay’s output contacts are connected in series to the control circuits. For both voltage systems an upper and lower operating limit can be set. When the voltage levels of the two systems are outside these setting parameters, the interlock function will not be cleared and the CB closing circuit remains open.

Configuring the systems dead setting values enables the connection to de-energised power systems. When both systems are alive the usual synchronizing conditions, i.e. voltage- and frequency difference, have to be within the setting parameter ranges. Different to the other synchronizing modes, mode 4 also provides a CB closing interlock clearance when the system phase angle is moving outside the zero degrees as long as the slip frequency is below 0,02 Hz and the phase angle parameter PHImax. is not exceeded. This mode is also provided with a CB dead time compensation by taking into account the CB closing time when computing the angle for the closing operation.

The relay’s output contacts for interlock clearance are operating as many times as synchronizing conditions are attained during a synchronizing sequence.

5.6.3.5.

Synchronizing Mode 5: Automatic Transfer of Bus Bar Systems Model: Digital Synchronizing Relay To enable the application of the SYN3000 in an manual and automatic transfer scheme for power station auxiliary supply systems, the synchronizing mode 5 is provided for this purpose. In principle, mode 5 represents mode 2 with an additional initiating input. Usually, a selection input selection will result in a CB closing operation or a CB interlock clearance action according to the configured synchronizing mode. Before this operation several internal comparison checks are made and also a few timing stages are being run through.

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SYN3000

Description

In case of synchronizing mode 5, the remote control selection will result in an immediate internal check sequence but the output relays are energised only after the input "Q-SYNC" is set, i.e. terminal 93, a synchronizm has been measured with consideration of the phase angle and the CB closing time and also the voltage- and frequency difference is within their set parameters. In this operating mode no over- and under voltage setting limits are configured. Further the control output is suppressed when either one of the systems is in a dead state.

The CB closing command is given several times in one selection period, every time when the phase angle is 0째. When the systems are synchronous or when the slip is below 0,008 Hz, every 5 sec. a closing command is produced.

5.6.3.6.

Synchronizing Mode 6: Measuring Circuit Breaker Closing Time Model: Digital Synchronizing Relay and Synchronizing Check Relay In this mode of operation the total operating time sequence of the CB closing command is measured. Pre-conditions for this measuring is that either of the two voltage systems is de-energised prior to C.B. closing.

For measuring the CB closing time the SYN3000 is provided with a menu sequence whereby the CB close command can be given via a key operation when the relay is adjusted to synchronizing mode 6. Otherwise when selecting the selection input and connecting the associated VT voltage the usual synchronizing sequence will be initiated.

The CB close command is given by key operation after an internal safety cross-check.

5.6.3.7.

Additional Settings

The selection of the synchronizing mode determines which parameters are offered in the menu for setting or modification. In the following chapter, 5.6.3.9 Definition of Setting Parameters, these values are listed and each one displayed in a separate window.

Example: Setting Value: Maximum Frequency Difference Low

Selection input

Synchronizing mode

Channel:xx/SYNC.M.=2 Max.Diff.Frequ.Low. -dfmax=0.00Hz,(0.05) [0.01-0.25][ESC][OK] Setting range

Parameter description Proposed value Valid keys

The following table contains the parameter settings for each synchronizing mode.

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SYN3000

Description

5.6.3.8.

Synchronizing Parameter Reference Table

For quick reference, the parameters of the various synchronizing modes are listed in the table below. For each of the 10 selection inputs one of the 5+1 synchronizing modes can be selected.

This basic selection determines the subsequent setting parameters. Synchronizing mode 6, measuring the CB closing time, is not contained in the table.

Sync. Mode 5: AUTO TRANSFER OF BUS BARS

Sync.Mode 6: DEAD TIME COMPENSATION

Sync. Mode 1: GENERATOR-/ BUS BAR

Sync.Mode 2: SYNC/ASYNCCONDITIONS

Sync. Mode 3: DEAD or LIVE SYSTEM CONDITIONS

Sync. Mode 4: SYNCHRONIZINGCHECK

X

30..150 Increment: 1 Def.110

30..150 Increment: 1 Def.110

X

X

[V]

30..150 Increment: 1 Def. 110

X

30..150 Increment: 1 Def. 90

30..150 Increment: 1 Def. 90

X

X

[V]

30..150 Increment: 1 Def. 90 X

X

0..20 Increment: 1 Def. 0

0..20 Increment: 1 Def. 0

X

X

X

X

30..150 Increment: 1 Def. 110

30..150 Increment: 1 Def. 110

X

X

X

X

30..150 Increment: 1 Def. 90

30..150 Increment: 1 Def. 90

X

X

X

X

0..20 Increment: 1 Def. 0

0..20 Increment: 1 Def. 0

X

X

1 .. 30 Increment: 1 Def. 5

1 .. 30 Increment: 1 Def. 5

1 .. 30 Increment: 1 Def. 5

1 .. 30 Increment: 1 Def. 5

X

[V]

1 .. 30 Increment: 1 Def. 5

1 .. 30 Increment: 1 Def. 5

1 .. 30 Increment: 1 Def. 5

1 .. 30 Increment: 1 Def. 5

1 .. 30 Increment: 1 Def. 5

X

[V]

1 .. 30 Increment: 1 Def. 5

Max. Diff. Frequ. High.

0.01 .. 0.25 0.01 .. 0.25 0.01 .. 0.25 0.01 .. 0.25 +dfmax Increment: 0.01 Increment: 0.01 Increment: 0.01 Increment: 0.01 [Hz] Def. 0.05 Def. 0.05 Def. 0.05 Def. 0.05

0.01 .. 0.25 Increment: 0.01 Def. 0.05

X

Max. Diff. Frequ. Low. 0.01 .. 0.25 0.01 .. 0.25 0.01 .. 0.25 0.01 .. 0.25 -dfmax Increment: 0.01 Increment: 0.01 Increment: 0.01 Increment: 0.01 [Hz] Def. 0.05 Def. 0.05 Def. 0.05 Def. 0.05

0.01 .. 0.25 Increment: 0.01 Def. 0.05

X

Inputs

SYS1: Max. Syn. Volt.

V1max SYS1: Min. Syn. Volt.

V1min SYS1: No Voltage V1Zero [V] SYS2: Max. Syn. Volt.

V2max [V] SYS2: Min. Syn. Volt.

V2min [V] SYS2: No Voltage V2Zero [V] Max. Diff. Volt. ind. +dVmax Max. Diff. Volt. cap.

-dVmax

Max. Perm.Phase Angle PHImax [DEG.electr.]

0 .. 15 Increment: 1 Def. 3

0 .. 45 Increment: 1 Def. 3

0 .. 45 Increment: 1 Def. 3

0 .. 45 Increment: 1 Def. 3

0 .. 45 Increment: 1 Def. 3

X

C.B. Dead Time Comp.

40 .. 500 Increment: 10 Def. 60

40 .. 500 Increment: 10 Def. 60

40 .. 500 Increment: 10 Def. 60

40 .. 500 Increment: 10 Def. 60

X

[msec.]

40 .. 500 Increment: 10 Def. 60

[%]

80 .. 120 Increment: 1 Def. 100

80 .. 120 Increment: 1 Def. 100

80 .. 120 Increment: 1 Def. 100

80 .. 120 Increment: 1 Def. 100

80 .. 120 Increment: 1 Def. 100

80 .. 120 Increment: 1 Def. 100

tCB-comp Volt.adaptation kV2

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Description

Run-time Supervision tRuntime [Min.]

1 .. 60 Increment: 1 Def. 10

1 .. 60 Increment: 1 Def. 10

1 .. 60 Increment: 1 Def. 10

1 .. 60 Increment: 1 Def. 10

1 .. 60 Increment: 1 Def. 10

X

Activation Time tW

1 .. 25 Increment: 1 Def. 1

1 .. 25 Increment: 1 Def. 1

1 .. 25 Increment: 1 Def. 1

1 .. 25 Increment: 1 Def. 1

X

[Sec.]

1 .. 25 Increment: 1 Def. 1

X

X

X

X

X

[Sec.]

1 .. 20 Increment: 1 Def. 5

Volt.Reg.Contr.Speed tVv [Sec./10 V]

1 .. 60 Increment: 1 Def. 20

X

X

X

X

X

Frequ. Reg.Interv. tfr

X

X

X

X

X

[Sec.]

1 .. 20 Increment: 1 Def. 5

Frequ. Reg.Contr.Speed tfc [Sec./10 Hz]

1 .. 200 Increment: 1 Def. 20

X

X

X

X

X

Volt.Reg.Interv. tVt

Table Contents From left to right 1. Column: 2.- 6. Column:

Setting parameters and unit of measurement 1. Row: Parameter setting range. The actual setting value is obtained by multiplication with the 1. column value.

2. Row: Parameters setting increment 3. Row: Default value

For areas marked with an "x" this parameter cannot be set for this particular synchronizing mode.

5.6.3.9.

Definition of Setting Parameters

In order to minimise the number of characters used when programming data, the generators, power systems, bus bars or lines are denominated as System.

When applying synchronizing mode 1 the proper connection of the generator- and bus bar system to the terminals of the SYN3000 relay is of utmost importance to obtain the speed and voltage regulation signals in the proper raise and lower sequence. Therefore it is defined that the generator is always denominated System 1 and the bus bar or line always System 2.

The other synchronizing operating modes do not produce any raise/lower commands and connection of the plant’s incoming signals to either System 1 or System 2 is of no importance.

SYS1: Max. Syn. Volt., V1max Maximum Synchronizing Voltage of System 1 The adjustable over voltage setting of System 1, e.g. generator, bus or line, will block the output of raise and lower commands of System 1 once the set value is reached, and no synchronizing ready condition exists.

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Description

SYN3000

SYS1: Min. Syn. Volt., V1min Minimum Synchronizing Voltage of System 1 The adjustable under voltage setting of System 1, i.e. generator, bus, or line, will block the output of raise and lower commands of System 1 once the set value is reached, and no synchronizing ready condition exists.

SYS1: No Voltage V1zero Maximum Permissible Voltage on System 1 for a No Voltage Condition Adjusted to zero this setting will prevent CB closing for dead bus or dead line conditions. Choosing a setting above zero, closure of the CB is permitted when the System 1 voltage is below setting value. This feature will compensate for any residual voltages on either generator, bus or line, interfering with the operation of the SYN3000.

SYS2: Max. Syn. Volt., V2max Maximum Synchronizing Voltage of System 2 The adjustable over voltage setting of System 2, i.e. bus or line, will block the closure of the CB when the measured voltage of System 2 is exceeding the setting.

SYS2: Min. Syn. Volt., V2 min Minimum Synchronizing Voltage of System 2 The adjustable under voltage setting of System 2, i.e. generator, bus, or line, will block the closure of the CB when the measured voltage of System 2 is below the setting.

SYS2: No Voltage V2 zero Maximum Permissible Voltage on System 2 for a No Voltage Condition Adjusted to zero this setting will prevent CB closing for dead bus or dead line conditions. Choosing a setting above zero, closure of the CB is permitted when the System 2 voltage is below setting value. This feature will compensate for any residual voltages on either generator, bus or line, interfering with the operation of the SYN3000.

Max. Diff. Volt. Ind., +dVmax Maximum Permissible Voltage Difference Between System 1 and System 2, Where System 1 is Higher Than System 2 When running and incoming systems are both energised the voltage difference between the two is measured and compared with the set value, for conditions where System 1 voltage is higher than System 2 voltage. Connecting the generator to the System 1 input, reactive power will be exported and an overexcited, inductive operation exists. Exceeding the differential voltage setting value the CB close command is blocked.

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SYN3000

Max. Diff. Volt. Cap., -dVmax Maximum Permissible Voltage Difference Between System 1 and System 2, Where System 1 is Lower Than System 2 When running and incoming systems are both energised the voltage difference between the two is measured and compared with the set value, for conditions where System 1 voltage is lower than System 2 voltage. Connecting the generator to the System 1 input, reactive power will be imported and an under excited, capacitive operation exists. Exceeding the differential voltage setting value the CB close command is blocked.

Max. Diff. Frequ. High,+dfmax Maximum Permissible Frequency Difference Between System 1 and System 2, Where System 1 is Higher Than System 2 When running and incoming systems are both energised the frequency difference between the two is measured and compared with the set value, for conditions where System 1 frequency is higher than System 2 frequency. Connecting the generator to the System 1 input, active power will be exported and an over synchronous, operation exists. Exceeding the differential frequency setting value the CB close command is blocked.

Max. Diff. Frequ. Low,-dfmax Maximum Permissible Frequency Difference Between System 1 and System 2, Where System 1 is Lower Than System 2 When running and incoming systems are both energised the frequency difference between the two is measured and compared with the set value, for conditions where System 1 frequency is lower than System 2 frequency. Connecting the generator to the System 1 input, active power will be imported and an under synchronous, operation exists. Exceeding the differential frequency setting value the CB close command is blocked.

Max. Perm. Phase Angle, PHImax Maximum Permissible Phase Angle This is the maximum permissible phase angle between System 1 and System 2. The SYN3000 calculates - with respect to the CB dead time - the exact closing moment. If this calculation points into a window of (PHImax + 0,5째), then the closing command is produced. (0,5째 is the accuracy of the measuring circuit). Concerning the setting advice please also see chapter 12, "Remarks to the Accuracy".

CB Dead Time, tCB-comp CB Dead Time Compensation This setting compensates for the CB closing time and all the other delays caused by the external synchronizing control circuits. The time may be estimated by referring to the particular data, or preferably determined with the aid of the " Dead Time Compensation " menu of the SYN3000. The time is adjustable in milliseconds.

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Description

SYN3000

Volt.adaptation, kV2 Voltage adaptation, factor kV2 The voltage of system 2 is multiplied with this factor. After this it is taken for the calculation of the voltage level. So it is possible to correct inaccuracies of the VT's.

Run-Time Supervision, tRuntime Excess Synchronizing Time This is the time which will deactivate the SYN3000 if a remote control synchronizing channel is initiated and the synchronizing control sequence is not completed during this period.

Activation Time, tW After the initial synchronizing sequence start command an adjustable time delay is provided to cater for time taken connecting the VT secondary inputs to the relay, before the software of the SYN3000 is activated.

Volt. Reg. Interv., tVt Voltage Regulating Control Interval The voltage of System 1, i.e. the incoming voltage, is adjusted by excitation raise and lower control pulses. During the control interval the excitation equipment can regulate the voltage to the desired value. Therefore, the interval time should be set equal to the regulating response time of the excitation system during rapid, dynamic voltage changes. This setting is adjustable in seconds.

Volt. Reg. Contr. Speed, tVv Voltage Regulating Control Speed System 1 voltage is adjusted by excitation raise/lower control commands. The speed of the voltage control should be equal to the operating time of the setting value potentiometer in the voltage regulator. The length of the control pulse is proportional to the measured voltage deviation with a limited maximum setting of 25 seconds. The setting parameter is in sec./10 V units, with respect to the rated VT secondary voltage. The time required for a complete travel of the setting value potentiometer is, for example, 40 sec. to produce a voltage regulation of +/- 5% of the rated generator voltage. Therefore the resulting correct setting of the raise and lower control would be 40.

The setting can also be interpreted differently, stating that with a difference of 1 V between the actual and the rated VT secondary voltage and a setting of 40, the voltage control command will be given with a 4 sec. duration.

Frequ. Reg. Interv., tfr Frequency Regulation Interval The speed of generator System 1, i.e. the frequency is varied by regulating control pulses. During each subsequent control interval the regulator is able to respond to the previous control pulse given. Therefore the regulating interval time should be set to a value equal to the response time of the regulator during sudden dynamic operating conditions and the setting unit is in seconds.

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Description

Frequ. Reg. Contr. Speed, tfc Frequency Regulating Control Speed The speed control of the generator System 1 is carried out via speed control pulses. Setting of the regulating speed should be in accordance with the time required for the setting value potentiometer in the turbine speed regulator equipment. The length of the control command is proportional to the measured speed deviation and is limited to a maximum of 2,5 seconds. The parameter is set in sec./10 Hz units and, for example, if the time required by the speed setting value potentiometer is 30 sec. during a frequency deviation of +/- 1 Hz of the rated frequency, the resulting value should be set to 150.

With a different interpretation, the setting value for speed regulation can be derived by saying, a frequency difference of 0,1 Hz and a setting of 150 will result in a speed control pulse of 1,5 sec. duration.

The SYN3000 regulates to a slip of 0,03 Hz over-synchronous. That means, also in the range of 0 to 0,03 Hz over-synchronous it applies "raise"-commands to get this slip.

The length of the speed commands is given by the difference of the actual slip to 0,03 Hz. At 0,06 Hz the "lower"-commands have the same length as at 0 Hz ("raise"-commands). That means that the pulse length is unsymmetrical to the slip zero point.

Exception: When the maximum frequency difference +dfmax is set to a value below 0,06 Hz, the set point for the slip regulation is not 0,03 Hz, but +dfmax /2. At a setting of +dfmax = 0,04 Hz the set point for the slip is 0,02 Hz, for example.

6. Mounting of the SYN3000 6.1. Scope of Supply Right after delivery the SYN3000 should be unpacked and carefully inspected for any mechanical damage which could occur during transport. Subsequently the relay’s nameplate and case should be checked according to following check list, to ascertain that the correct model has been received.

Model:

Digital synchronizing relay or digital synchronizing check relay

Power Supply:

20 V to 56 VDC or alternatively 90 V to 260 V AC/DC

Rated Frequency of VT Circuits:

16 2/3 Hz or 50/60 Hz

Rated VT Voltage:

100 V to 125 VAC

Rated Voltage of Selection Inputs:

24 VDC

Relay Case:

19" rack with 42 U width or flush mounted

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SYN3000

Description

6.2. External Wiring The SYN3000 is provided with pull-off type terminal blocks at the rear of the case which can accommodate wire cross sections with up to 2,5 mm².

Please check that the wiring is not alive prior to connecting to the terminal block.

Please note the CB close circuit should only be connected when all remaining wiring has been completed.

6.3. Terminal Connections The terminals of the SYN3000 are located at the rear. These terminal blocks are of the pull-off type and also have integrated test connection points. To facilitate installation and commissioning the terminals are numbered and the associated connection diagrams are also shown on the rear plate.

Rear view of a SYN3000 flush panel mounted model

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SYN3000

Separate terminal blocks for the inputs, the outputs, the auxiliary supply and the VT circuits are provided.

Rear view of the SYN3000 with terminal arrangement and connection diagrams.

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SYN3000

Description

The terminal arrangement is described as follows: Terminal Number 10 13, 14

Denomination

Remarks

Ground

Earth terminal of the SYN3000

Input: Auxiliary supply AC or DC

The polarity of the DC auxiliary supply is of no importance. However for reasons of conformity it is recommended that terminal 13 is the + and terminal 14 the - potential.

The auxiliary supply rating is according to the SYN3000 model.

31, 32

Input: VT voltage, System 1(A)

A potential free input for the measuring VT voltage of System 1(A).

In the generator/bus bar synchronizing mode the generator VT has to be connected to this input.

The VT polarities for both voltage signals have to be correct.

To synchronize the same phases, i.e. L1-L2 or L2-L3 or L3-L1, have to be applied for both VT voltages.

34, 35

Input: VT voltage, System 2(B)

A potential free input for the measuring VT voltage of System 2(B).

In the generator/bus bar synchronizing mode the bus bar has to be connected to this input.

The VT polarities for both voltage signals have to be correct.

To synchronize the same phases, i.e. L1-L2 or L2-L3 or L3-L1, have to be applied for both VT voltages.

37

Safety: Protective Screen of the SYN3000 interposing VT

For protection against high voltage surges in the main VT secondary circuits the screen of the SYN3000 internal interposing VT should be grounded.

41, 43

Output: Generator Voltage Raise Command

When synchronizing a generator to the bus bar or line system, this potential free output is employed to regulate the generator voltage.

42, 44

Output: Generator Voltage Lower Command

When synchronizing a generator to the bus bar or line system, this potential free output is employed to regulate the generator voltage.

45, 47

Output: Generator Speed Raise Command

When synchronizing a generator to the bus bar or line system, this potential free output is employed to regulate the generator speed.

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SYN3000

Description

Output: Generator Speed Lower Command

When synchronizing a generator to the bus bar or line system, this potential free output is employed to regulate the generator speed.

62, 61, 63

Output: SYN3000 Ready Indication

Via this potential free change over contact the service readiness of the SYN3000 can be derived. The normally open contact of terminals 61,62 is indicating when closed that the SYN3000 is ready for operation, provided that the auxiliary supply is switched on and no internal and/or external abnormal conditions have been detected. The relay is ready for a remote control selection. When selecting a selection input or with the occurrence of an external and/or internal failure the contact of terminals 61,62 opens and from the now closed contact of terminals 61,63 the indication is derived that the SYN3000 is not ready to receive a further remote control selection.

65, 64, 66

Output: Service Indication: SYN3000 Alarm

Via this potential free change over contact the functional failure indication can be derived. This signal is common for any internal fault conditions detected. The closed contact across terminals 64,66 is indicating a "SYN3000 Alarm"; when this contact is open the now closed contact across terminals 64,65 is signalling the system healthy conditions.

46, 48

When selected: During synchronizing check mode and synchronizing time exceeded or or or or or or or or or or or 49, 52

Error Code 14, Type 1 Error Code 14, Type 2 Error Code 14, Type 3 Error Code 14, Type 4 Error Code 14, Type 5 Error Code 14, Type 6 Error Code 14, Type 7 Error Code 14, Type 8 Error Code 14, Type 9 Error Code 14, Type 12 device is turned off (potential free condition)

Output: CB Close Command

In order to also signal the auxiliary supply failure the normally closed contact for the common alarm annunciation should be chosen.

Note: When connecting terminals 61,63 and 64,65 in series, i.e. "SYN3000 Not Ready" and "SYN3000 No Alarm" a successful remote input control selection can be derived.

This potential free relay contact is provided for direct operation of the CB close coil. The contact is closing when all synchronizing conditions for the particular selection input are satisfactory.

For control circuits applying a double pole switching method, i.e. the CB closing coil’s + and circuit is operated, a second contact, terminals 50,51, is incorporated. Both contacts are always operating simultaneously.

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SYN3000

Description

50, 51

Output: CB Close Command

This potential free relay contact is provided for direct operation of the CB close coil. The contact is closing when all synchronizing conditions for the particular selection input are satisfactory.

For control circuits applying a double pole switching method, i.e. the CB closing coil’s + and circuit is operated, a second contact, terminals 49, 52, is incorporated. Both contacts are always operating simultaneously.

81

Output: +24 V External Auxiliary Supply

When no external 24 VDC supply is available then an internal supply of the SYN3000 can be employed to activate the selection inputs.

This voltage supply is isolated from the SYN3000 internal auxiliary supply and is rated up to 50 mA. The load current required for a selection input selection amounts to approximately 5 mA. This supply is not short circuit proof and damage can be done when overloading or shortening it. Therefore this voltage supply for the selection inputs should be used only for short distances. Where considerable control cable lengths are involved, suitable interposing relays, located in the vicinity of the SYN3000, have to be incorporated to provide a potential isolation.

The corresponding minus connection is wired to terminal 94.

82

Input: Common, Ground Connection of Selection Inputs

To reduce the number of terminal connections, the ground connections of the selection input circuits are internally connected together and wired to terminal 82 When the SYN3000 24 V selection input supply is applicable then terminal 82 has to be jumpered to terminal 94, GND out.

83

Input: SEL1, Selection Input 1

When applying a +24 VDC voltage to this terminal the parameter set 1 is loaded and the selected synchronizing sequence is initiated.

This input has to stay energised during the whole synchronizing control sequence and has to be de-activated only after the CB closing operation has been carried out.

84

Input: SEL2, Selection Input 2

When applying a +24 VDC voltage to this terminal the parameter set 2 is loaded and the selected synchronizing sequence is initiated.

This input has to stay energised during the whole synchronizing control sequence and has to be de-activated only after the CB closing operation has been carried out.

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Description

85

Input: SEL3, Selection Input 3

When applying a +24 VDC voltage to this terminal the parameter set 3 is loaded and the selected synchronizing sequence is initiated.

This input has to stay energised during the whole synchronizing control sequence and has to be de-activated only after the CB closing operation has been carried out.

86

Input: SEL4, Selection Input 4

When applying a +24 VDC voltage to this terminal the parameter set 4 is loaded and the selected synchronizing sequence is initiated.

This input has to stay energised during the whole synchronizing control sequence and has to be de-activated only after the CB closing operation has been carried out.

87

Input: SEL5, Selection Input 5

When applying a +24 VDC voltage to this terminal the parameter set 5 is loaded and the selected synchronizing sequence is initiated.

This input has to stay energised during the whole synchronizing control sequence and has to be de-activated only after the CB closing operation has been carried out.

88

Input: SEL6, Selection Input 6

When applying a +24 VDC voltage to this terminal the parameter set 6 is loaded and the selected synchronizing sequence is initiated.

This input has to stay energised during the whole synchronizing control sequence and has to be de-activated only after the CB closing operation has been carried out.

89

Input: SEL7, Selection Input 7

When applying a +24 VDC voltage to this terminal the parameter set 7 is loaded and the selected synchronizing sequence is initiated.

This input has to stay energised during the whole synchronizing control sequence and has to be de-activated only after the CB closing operation has been carried out.

90

Input: SEL8, Selection Input 8

When applying a +24 VDC voltage to this terminal the parameter set 8 is loaded and the selected synchronizing sequence is initiated.

This input has to stay energised during the whole synchronizing control sequence and has to be de-activated only after the CB closing operation has been carried out.

91

Input: SEL9, Selection Input 9

When applying a +24 VDC voltage to this terminal the parameter set 9 is loaded and the selected synchronizing sequence is initiated.

This input has to stay energised during the whole synchronizing control sequence and has to be de-activated only after the CB closing operation has been carried out.

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SYN3000

Description

92

Input: SEL10, Selection Input 10

When applying a +24 VDC voltage to this terminal the parameter set 10 is loaded and the selected synchronizing sequence is initiated.

This input has to stay energized during the whole synchronizing control sequence and has to be de-activated only after the CB closing operation has been carried out.

93

Input: Q-Sync, Additional Input for Automatic Transfer Operations

When the synchronizing mode 5 has been programmed with the corresponding parameters, a selection input selection will initiate the synchronizing sequence but a CB close command at synchronizm is only performed when this input is activated with a + 24 VDC potential.

User Application: Automatic transfer of station auxiliary systems.

94

Output: GND OUT, Internal 24 V Supply

When no external 24 VDC supply is available then the 24 V Selection supply of the SYN3000 can be applied.

This voltage supply is isolated from the SYN3000 internal auxiliary supply and is rated up to 50 mA. The load current drawn by a selection input amounts to 5 mA approximately.

This supply is not short circuit proof and damage may be caused when overloading and short circuiting it. This supply should only be employed with short distances and where the distance between the synchronizing relay and the remote point of control is considerable, interposing relays located in the vicinity of the SYN3000 have to be provided for potential isolation The associated plus potential is wired to terminal 81.

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Description

SYN3000

7. Technical Data The SYN3000 is a synchronizing relay to synchronize and parallel synchronous or asynchronous single phase or three phase systems being either in an energised or de-energised state.

7.1. Electrical Data Voltage Transformer Rated Voltage: 100 VAC Operating Range: 0 - 150 VAC Rated Frequency: 16 2/3 // 50 // 60 Hz, according to model Burden: 1 VA Selection Inputs Number: Input Voltage: Consumption: Minimum Operation Voltage:

10 24 VDC 5 mA 8 – 10 VDC

The auxiliary supply for the selection inputs can either be taken from an external 24 VDC source or the internal voltage supply, wired to terminals 81 and 94, can be used. The remote control output voltage has no common connection with the internal DC supply of the SYN3000 and has a maximum permissible rating of 50 mA. The above auxiliary supply is by no means short circuit proof and a related fault on this circuit may damage the SYN3000. Therefore this supply must only be used for remote selections in the in the immediate vicinity of the SYN3000, e.g. the synchronizing cubicle. For increasing distances of the remote selection circuits suitable interposing relays, located near the SYN3000 have to be employed. Please also refer to the circuit diagram on page 7.

Additional Input: Automatic Transfer Operation Number: 1 Input Voltage: 24 VDC Consumption: 5 mA Minimum Operation Voltage: 8 – 10 VDC Outputs: Raise/Lower Control and CB Close Commands Type: 2 N/O relay contacts in series and potential free Break DC: 0,2 A at 220 VDC and ohmic burden Break AC: 5 A at 250 VAC Outputs: "SYN3000 Ready" and "SYN3000 Faulty" Type: 1 C/O relay contacts in series and potential free Break DC: 0,2 A at 220 VDC and ohmic burden Break AC: 5 A at 250 VAC Auxiliary Supply: Model 90-260 V Operating Range: Power Consumption: Power Inrush:

Edition: 08.01.2002

90-260 VAC or DC direct connection 8 W/18 VA 4 A approximately

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SYN3000

Description

Auxiliary Supply: Model 20-56 V Operating Range: Power Consumption: Type Tests:

Temperature Range: Ambiente Temperature: Storage Temperature:

20-56 VDC 8W IEC 61000-4, Part 2, 3, 4, 5, Testlevel III IEC 60255, Part 5, Testlevel III IEC 60255/22, Part 1, Testlevel III

0 to +50 Degree -20 to +70 Degree

7.2. Case and Dimensions The SYN3000 has a standard 19" case with 42 U width and 3 U height and is also supplied with a panel mounting frame.

Dimensions: Sub Rack Model Width x Height x Depth: 213 x 129 x 232 mm Weight: 1,5 kg Dimensions: Mounting Frame with Sub Rack Model Width x Height x Depth: 247 x 164 x 232 mm Weight: 2 kg Dimensions: Projection Mounting Model Width x Height x Depth: 247 x 164 x 266 mm Weight: 3,5 kg

7.3. Parameter Setting Ranges The following values contain the minimum and maximum values of the parameter settings.

Minimum Frequency Difference df: Maximum Frequency Difference df:

0,01 Hz 0,25 Hz

Minimum Voltage Difference dV: Maximum Voltage Difference dV:

1V 30 V

Maximum Synchronizing Voltage, Adjustable for Each System , Vmax:

150 V

Minimum Synchronizing Voltage, Adjustable for Each System Vmin:

30 V

Maximum Permissible Phase Angle PHImax:15 Degree Electrical, Synchronizing Mode: 1 45 Degree Electrical, Synchronizing Mode: 2,3,4,5 Maximum Permissible Residual Voltage of a Dead System :

20 V

Maximum Adjustable CB Closing Time:

500 ms

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Description

SYN3000

8. Error Annunciation List Due to the extreme importance of the SYN3000 operating performance special safety precautions were incorporated into the system’s software sequence. The SYN3000 main program execution was subdivided into several programs, independent from each other, which perform plausibility cross checks on the other ones thereby enabling a complete system stop rather than inaccurate results in case of internal failure.

When a failure has been detected by the SYN3000 the common LED indication "Fault" is energized and in addition the LC-display will screen the corresponding Error Code.

NOTE All alarms, which set the alarm output and which must be reset, can be reset in two ways: 1. by reset of the selection input 2. by pressing the [ESC] - key on the key pad In every case the text on the displays stays as long as the [ESC] - keys is pressed.

Error Code: 010 Internal Fault, incorrect data exchange between the User interface and the main processor of the SYN3000 Cause: Extremely high level electromagnetic interference in the vicinity of the SYN3000, or the communication port interconnection is lose or defect.

Remedy: Check out the source of the interference and advice the manufacturer if applicable. If no interference can be found the relay should be disconnected and sent to our Works with a short note of advise.

Effect: Only text on LC-display. Alarm contacts are not closed. Alarm is self-resetting.

Error Code: 011 Internal Fault, telegram error between the user interface and the main processor of the SYN3000 Cause: Extremely high level electromagnetic interference in the vicinity of the SYN3000, or the communication port interconnection is lose or defect.

Remedy: Check out the source of the interference and advice the manufacturer if applicable. If no interference can be found the relay should be disconnected and sent to our Works with a short note of advise.

Effect: Only text on LC-display. Alarm contacts are not closed. Alarm is self-resetting.

Error Code: 012 Internal Fault, storage error in EEPROM Cause: Chip characteristic tolerances Remedy: Re-try parameter configuration and notify the manufactures if applicable.

Effect: Only text on LC-display. Alarm contacts are not closed. Alarm is self-resetting.

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Description

SYN3000

Error Code: 013 Internal Fault, telegram error between the user interface and the main processor of the SYN3000 Cause: Extremely high level electromagnetic interference in the vicinity of the SYN3000.

Remedy: Check out the source of the interference and advice the manufacturer if applicable. If no interference can be found the relay should be disconnected and sent to our Works with a short note of advise.

Effect: Only text on LC-display. Alarm contacts are not closed. Alarm is self-resetting.

Error Code: 014 This code contains a group of faults and therefore the fault number is also displayed. These faults represent critical failures and have to be acknowledged locally via the key pad and the cause has to be investigated. (For reset see above note).

Type 1: Internal Fault, division by zero Cause: False register entry in the program module for the frequency measuring system 1.

Remedy: The relay has to be taken out of service and the manufacturer notified. The relay should be sent to our Works together with a short note of advise.

Effect: Alarm output contacts 64, 66 are closed and the LED "Warning/Error" is on. This failure can be reset either by reset of the selection input or by pressing the [ESC] - key on the key pad. The text on the LC-display must be reset by the key pad in every case. All function of the SYN3000 are disabled until the reset.

Type 2: Internal Fault, division by zero Cause: False register entry in the program module for the frequency measuring system 2.

Remedy: The relay has to be taken out of service and the manufacturer notified. The relay should be sent to our Works together with a short note of advise.

Effect: Alarm output contacts 64, 66 are closed and the LED "Warning/Error" is on. This failure can be reset either by reset of the selection input or by pressing the [ESC] - key on the key pad. The text on the LC-display must be reset by the key pad in every case. All function of the SYN3000 are disabled until the reset.

Type 3: Internal Fault, remote control data faulty, control input channel not valid Cause: False register entry by the evaluation of the selection inputs.

Remedy: Take the relay out of service and notify the manufacturer. The relay should be sent to our Works together with a short note of advise.

Effect: Alarm output contacts 64, 66 are closed and the LED "Warning/Error" is on. This failure can be reset either by reset of the selection input or by pressing the [ESC] - key on the key pad. The text on the LC-display must be reset by the key pad in every case. All function of the SYN3000 are disabled until the reset.

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Type 4: Internal Fault, error by the block comparison of the setting parameters for the activated selection input Cause: False register entry in the program module for the frequency measuring system 1.

Remedy: The relay has to be taken out of service and the manufacturer notified. The relay should be sent to our Works together with a short note of advise.

Effect: Alarm output contacts 64, 66 are closed and the LED "Warning/Error" is on. This failure can be reset either by reset of the selection input or by pressing the [ESC] - key on the key pad. The text on the LC-display must be reset by the key pad in every case. All function of the SYN3000 are disabled until the reset.

Type 5: Internal Fault, error by the block comparison of the setting parameters for all selection inputs Cause: False register entry in the program module for the frequency measuring system 1.

Remedy: The relay has to be taken out of service and the manufacturer notified. The relay should be sent to our Works together with a short note of advise.

Effect: Alarm output contacts 64, 66 are closed and the LED "Warning/Error" is on. This failure can be reset either by reset of the selection input or by pressing the [ESC] - key on the key pad. The text on the LC-display must be reset by the key pad in every case. All function of the SYN3000 are disabled until the reset.

Type 6: Internal Fault, error by the phase angle computation Cause: Error in the main program of the SYN3000 Remedy: Take the relay out of service and notify the manufacturer. The relay should be sent to our Works together with a short note of advise.

Effect: Alarm output contacts 64, 66 are closed and the LED "Warning/Error" is on. This failure can be reset either by reset of the selection input or by pressing the [ESC] - key on the key pad. The text on the LC-display must be reset by the key pad in every case. All function of the SYN3000 are disabled until the reset.

Type 7: Internal Fault, error by the computation of the circuit breaker close command time Cause: Error in the main program of the SYN3000 Remedy: Take the relay out of service and notify the manufacturer. The relay should be sent to our Works together with a short note of advise.

Effect: Alarm output contacts 64, 66 are closed and the LED "Warning/Error" is on. This failure can be reset either by reset of the selection input or by pressing the [ESC] - key on the key pad. The text on the LC-display must be reset by the key pad in every case. All function of the SYN3000 are disabled until the reset.

Type 8: Internal Fault, VT voltage input missing Cause: Wrong wiring of the VT voltage circuits. This will be detected when the synchronizing mode requires both running and incoming voltages, e.g. when synchronizing a generator to a bus bar system, or when during a synchronizing sequence one of the two VT voltages has disappeared.

Remedy: Check the wiring. Increase the safety time setting. Check the synchronizing mode selection circuit. The safety time delay caters for the time lapse between the selection input selection of the SYN3000 and the actual external connection of the VT voltages and CB close circuit.

Effect: Alarm output contacts 64, 66 are closed and the LED "Warning/Error" is on. This failure can be reset either by reset of the selection input or by pressing the [ESC] - key on the key pad.

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Description

SYN3000

The text on the LC-display must be reset by the key pad in every case. All function of the SYN3000 are disabled until the reset.

Note of Advise: When the SYN3000 is activated together with the generator excitation during the Unit start up sequence then the safety time delay has to be set to include the time required for the Unit to reach 100% nominal voltage. Otherwise the SYN3000 will start evaluating the VT voltage input with a resulting error message from the SYN3000 since the relay has detected a low level generator voltage condition.

Type 9: Internal Fault, invalid entry in EEPROM Cause: EEPROM faulty.

Remedy: Re-load selection input parameters. The relay has to be taken out of service and the manufacturer notified. The relay should be sent to our Works together with a short note of advise.

Effect: Alarm output contacts 64, 66 are closed and the LED "Warning/Error" is on. This failure can be reset either by reset of the selection input or by pressing the [ESC] - key on the key pad. The text on the LC-display must be reset by the key pad in every case. All function of the SYN3000 are disabled until the reset.

Type 12: Internal Fault, error by the phase angle computation Cause: EPROM faulty.

Remedy: Take the relay out of service and notify the manufacturer. The relay should be sent to our Works together with a short note of advise.

Effect: Alarm output contacts 64, 66 are closed and the LED "Warning/Error" is on. This failure can be reset either by reset of the selection input or by pressing the [ESC] - key on the key pad. The text on the LC-display must be reset by the key pad in every case. All function of the SYN3000 are disabled until the reset.

Error Code: 015 Internal Fault, RAM error of the User interface Cause: Internal failure of the User interface of the SYN3000 or extremely high level electromagnetic interference in the vicinity of the SYN3000.

Remedy: Re-attempt setting parameters. The relay has to be taken out of service and the manufacturer notified. The relay should be sent to our Works together with a short note of advise.

Effect: Only text on LC-display. Alarm contacts are not closed. Alarm is self-resetting.

Error Code: 016 Internal Fault, EEPROM could not be erased Cause: Chip tolerances or ageing Remedy: Re-attempt setting parameters. The relay has to be taken out of service and the manufacturer notified. The relay should be sent to our Works together with a short note of advise.

Effect: Only text on LC-display. Alarm contacts are not closed. Alarm is self-resetting.

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SYN3000

Description

9. Model Selection for Ordering Model Code: SYN3000/abcd a ... Function:

1 ... Synchronizing function with speed and voltage regulation and synchronizing check function, 10 selection inputs 2 ... Synchronizing check function only 3 ... Synchronizing function with speed and voltage regulation and synchronizing check function, 2 selection inputs, only 50/60 Hz 4 …only synchronizing check, 2 selection inputs, only 50/60 Hz

b ... Frequency:

1 ... 16 2/3 Hz 2 ... 50/60 Hz

c ... Auxiliary Supply:

1 ... 20 - 56 VDC 2 ... 90 - 260 V AC and DC

d ... Case:

1 ... 19"-rack mounting and flush panel mounting

Example: SYN3000/1221: This is a synchronizing relay with a rated frequency of 50 and 60 Hz, and a nominal auxiliary supply of 90 V - 260 V AC/DC, 10 selection inputs suitable for 19" rack mounting or flush panel mounting.

Synchronizing function with speed and voltage regulation and synchronizing check function, 16 2/3 Hz, auxiliary supply 90 - 260 V AC/DC 19"-rack mounting or flush panel mounting, 10 sel.inp.

Synchronizing function with speed and voltage regulation and synchronizing check function, 50/60 Hz, auxiliary supply 90 - 260 V AC/DC 19"-rack mounting or flush panel mounting, 10 sel.inp.

Synchronizing check function, 16 2/3 Hz, auxiliary supply 90-260 V AC/DC 19“-rack mounting or flush panel mounting, 10 sel.inp.

Synchronizing check function, 50/60 Hz, auxiliary supply 90-260 V AC/DC 19“-rack mounting or flush panel mounting, 10 sel.inp.

Auxiliary supply 20 - 56 VDC, additional costs

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SYN3000/1121

SYN3000/1221

SYN3000/2121

SYN3000/2221 Select model code accordingly

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Description

SYN3000

10. Typical Application: Generator to bus system synchronizing with speed- and voltage regulation control

In the example above the SYN3000 is selected via the selection input No. 1, terminal 83 with the internal 24 VDC by a potential free contact. This control application is only advisable when the external control input selection relay is located in the same cubicle as the SYN3000. The internal control voltage is not short circuit proof and the relay may be damaged by a faulty control circuit.

We therefor recommend for synchronizing control circuits being a considerable distance apart from the synchronizing relay to either apply an external 24 VDC control voltage or interposing relays.

The plant represented in the example requires only one selection input selection. The input selection auxiliary relay also enables the CB closing circuit. The running and incoming VT voltages and the speed/voltage raise and lower circuits can be connected directly to the SYN3000.

Via terminals 49/52 and 50/51 the CB can be closed from the + and - circuit. If only the + control circuit is used for CB closing then the two contacts can be connected in series to increase the voltage switching capabilities.

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Description

The following table shows a parameter setting example for the applicable selection input No. 1.

Inputs

Sync. Mode 1: GENERATOR/BUS BAR

110

SYS1: Max. Syn. Volt.

V1max [V]

90

SYS1: Min. Syn. Volt.

V1min [V]

5

Max. Diff. Volt.. ind. +dVmax [V]

1

Max. Diff. Volt. cap.

-dVmax [V]

0.1

Max. Diff. Frequ. High. +dfmax [Hz]

0.01

Max. Diff. Frequ. Low. -dfmax [Hz] Max. Perm.Phase Angle PHImax

3

[DEG. electr.]

200

C.B. Dead Time Comp. tCB-comp [msec.]

100

Volt.adaptation kV2 [%] Run-time Supervision tRuntime

10

[Min.]

1

Activation Time tW [Sec.]

3

Volt.Reg.Interv. tVt [Sec.] Volt.Reg.Contr. Speed tVv

5

[Sec./10 V]

10

Frequ.Reg.Interv. tfr [Sec.] Frequ.Reg.Contr.Speed tfc

20

[Sec./10 Hz]

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Description

SYN3000

11. Outline Drawing: Panel Cut Out:

The relay is pushed, together with the mounting frame, into the panel cut out and the frame is screwed to the panel with four M4 screws. The relay itself can be taken out by loosening the M2.5 screws on the mounting frame.

Side View of SYN3000 with Mounting Frame:

.

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Description

Overall Case Dimensions of SYN3000

m

22

9m

m

111mm 213m

12. Remarks to the Accuracy The SYN3000 has an accuracy of ±0,5° (due to the internal measuring). The permissible phase angle can be set to 0°, 1°, 2°, etc. (in steps of 1°). By this the maximum accuracy at CB closing is ±0,5° (at 0° setting), ±1,5° (at 1° setting), etc. The closing times based on this accuracy are calculated in the following diagram: Slip

0,005 Hz 0,01 Hz 0,02 Hz 0,03 Hz 0,04 Hz 0,05 Hz 0,1 Hz 0,2 Hz

At 100ms CB dead time the closing command should be produced at: (a) 0,18° 0,36° 0,72° 1,08° 1,44° 1,8° 3,6° 7,2°

permissible tolerance window for ±0,5° (setting 0°) (b) ±278 ms ±139 ms ±69 ms ±46 ms ±35 ms ±28 ms ±14 ms ±7 ms

permissible tolerance window for ±1,5° (setting 1°) (c) ±833 ms ±417 ms ±208 ms ±138 ms ±104 ms ±83 ms ±41 ms ±21 ms

permissible tolerance window for ±2,5° (setting 2°) (d) ±1,389 s ±694 ms ±347 ms ±231 ms ±174 ms ±139 ms ±69 ms ±34 ms

The phase angle and also the closing time point is calculated every 120 ms (at 16 2/3 Hz-relays), resp. every 40 ms (at 50 Hz-relays). This calculation must point into the tolerance window. Only under this condition the closing command is produced (e).

When the slip is very low, the closing command is produced at the border of the tolerance window (f). That means that at very low slip the SYN3000 switches always with the maximum permissible angle in advance. (f.e. at 0,02 Hz, setting PHImax = 1°, tCB-comp = 100 ms results in a closing time point = CB dead time + 208 ms = 308 ms).

At a big slip and a small setted phase angle it can happen, that no calculation points into the window and therefore no closing command is produced (g).

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SYN3000

Description

Setting advice:

Set permissible phase angle to 3°. This ensures a closing command also at higher slip.

The following diagram shows above which frequency the calculation may point outside of the closing window. Therefore the closing command will not be produced every time when the phase angle = 0°: Permissible phase angle (setting)

Above this frequency limit the closing command may not be produced at phase angle = 0°.

16 2/3 Hz - relays (h)

Above this frequency limit the closing command may not be produced at phase angle = 0°.

50 Hz - relays (k)

0° 1° 2° 3°

≥0,023 Hz ≥0,07 Hz ≥0,12 Hz ≥0,16 Hz

≥0,07 Hz ≥0,21 Hz ≥0,35 Hz ≥0,49 Hz

Remark:

All calculated values are typical values. They can be increased because of the analogue input filters by 0,3°-0,5°.

Formulas for a.m. considerations: (a)

The angle for the production of the closing command is calculated: generally:

ϕ = 360 × s × t CB − comp

for tCB-comp = 100 ms: (b)

Degree

ϕ = 36 × s Degree

The tolerance window for the closing time is calculated:

(ϕ =

max

+ 0,5o ) × 1000 ms s × 360o

generally:

∆tTol

for ϕmax = 0°:

∆t Tol =

1,39 ms s

(c)

for ϕmax = 1°:

∆t Tol =

4,17 ms s

(d)

for ϕmax = 2°:

∆t Tol =

6,94 ms s

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Description

(e)

Scanning diagram for 16 2/3 - Hz relays and a closing tolerance of ±0,5°: ϕ [Degree]

1,0 0,5

-t

+t 120 ms scanning

(f)

This closing time point is in the tolerance window of ±0,5°. Therefore a closing command is produced (with respect to the CB dead time)

Scanning diagram for 16 2/3 - Hz relays and a closing tolerance of ±0,5° (very low slip): ϕ [Degree]

1,0 0,5

+t

-t 120 ms scanning

Already here (close to 0,5°) a closing command is produced (under respect of the CB dead time) (g)

Scanning diagram for 16 2/3 - Hz relays and a closing tolerance of ±0,5° (very high slip): ϕ [Degree]

1,0 0,5

-t

+t 120 ms scanning

These both closing time points are outside of the tolerance window of ±0,5°. Therefore NO closing command is produced.

(h) Above this frequency limit the closing command may not be produced every time at phase angle = 0°:

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SYN3000

Description

Legend:

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2 × (ϕ max + 0,5°)

generally:

f Limit =

for 16 2/3 Hz-relay:

f Limit =

ϕ max + 0,5° Hz 21,6

for 50 Hz-relay:

f Limit =

ϕ max + 0,5° Hz 7,2

t Scan × 360°

s ............... Slip (in Hz) ϕ ............... Phase angle ϕmax ........... max. permissible phase angle (in degree) tCB-comp ....... CB dead time compensation (in sec.) tScan ........... Scan time (120 ms at 16 2/3 Hz - relays, 40 ms at 50 Hz - relays)

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SYN3000

Description

13. SYN3000 - SETTING TABLE The following setting table can be printed with the SYN-WIN software.

Inputs

EXAMPLE: 2

Selection Input:

SYS1: Max. Syn. Volt.

1 GENERATOR/ BUS BAR 110

V1max [V] SYS1: Min. Syn. Volt.

90

Sync. Mode:

V1min [V] SYS1: No Voltage up to

-

V1Zero [V] SYS2: Max. Syn. Volt.

-

V2max [V] SYS2: Min. Syn. Volt.

-

V2min [V] SYS2: No Voltage up to

-

V2Zero [V] Max. Diff. Volt. ind.

5

+dVmax [V] Max. Diff. Volt. cap.

1

-dVmax [V] Max. Diff. Frequ. High

.1

+dfmax [Hz] Max. Diff. Frequ. Low

.01

-dfmax [Hz] Max.Perm.Phase Angle

3

PHImax [Deg. electr.]

C.B. Dead Time Comp.

200

tCB-comp [msec.]

Volt.adaptation

100

kV2

[%]

Run-time Supervision TRuntime

1

Activation Time TW

[Sec.]

Volt. Reg. Interv.

TVt

5

[Sec./10 V]

Frequ. Reg. Interv.

Tfr

10

[Sec.]

Frequ.Reg.Contr.Speed Tfc

3

[Sec.]

Volt.Reg.Contr.Speed TVv

10

[Min.]

20

[Sec./10 Hz]

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Description

SYN3000

14. PLEASE NOTE !

COPYRIGHT, REMARKS This document is the sole property of VA TECH SAT GmbH & Co and may neither be copied nor distributed and used without our written consent. Violations will be prosecuted by Law according to DIN 34 Standard.

The data contained in this literature should be considered as product information only. We would like to advise that short term modifications of our production range are possible due to our aim to continuously improve the performance of our products for the benefit of our customers so there may be differences between the products supplied and the corresponding descriptive literature.

According to our experience following the instructions outlined in this document will provide the most satisfactory service performance.

In case of unusual troubles which cannot be resolved by referring to this literature please contact our nearest agent or our Head Office.

When commissioning the operating instructions and also the applicable Local Safety Standards have strictly to be observed.

This edition of the document has been carefully checked regarding up-to-date contents and correctness. Should there be any discrepancies or contradictory information in this descriptive literature could please inform us. In case of problems please do not try to solve them on your own but contact our nearest agent or our Head Office who will be glad to be of any assistance to you.

All agreements, legal rights, obligations, performance and scope of supply for VA TECH SAT GmbH & Co and also conditions governing the warranty are without expectation regulated according to the Contract Agreement and are not, in any way, influenced by the contents of the descriptive literature or operating instructions.

Urgent information will be conveyed by telephone or fax.

Our address: VA TECH SAT GmbH & Co Dept. PE Penzingerstr. 76 A-1141 VIENNA AUSTRIA

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Phone: Fax:

++43 1 89 100 Ext. 2975 ++43 1 89 100 Ext. 3878 Fax of Dept. ++43 1 894 60 46 Company fax

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Description

SYN3000

To VA TECH SAT GmbH & Co Dept. PE / attn. Mr. Hantsch P.O.B. 5 A- 1141 VIENNA Please inform us at your earliest convenience if you have any additional requests and suggestions or in case of errors.

We thank you for your cooperation.

Drawing No. of the documentation : __________________ revision (+date):______________ Remarks:

From: Address:

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Phone: Fax:

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