Tractionised Range - Circuit Breakers

Tractionised Range - Circuit Breakers Guide

Efficient - Innovative - Safe

Contents

2

Introduction .…………………………………………………………….…………............................

3

Rowe Hankins History ……………………………....……………....………………………………

4

Why Hydraulic Magnetic? ……………………………………………….....………..……………

5

How they Work? ………………………………………………………….....………………..............

6

The MRH & RH Range ………………………………………………....…………....………………

7

Specification ……………………………………………....…………………...........…………..........

7

MRH Trip Curves ……………………………………………………......…………...........………….....

8

RH Trip Curves ……………………………………………………......…………...........………….....

9

How to Order …………………………………………....…..........…………..........…………………

10

RCBO’s …………………………………………………………..............................................…….

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Introduction Rowe Hankins Ltd specialize in innovative on-train and trackside products for the world’s railways.

Rowe Hankins work closely with rolling stock manufacturers, fleet operators, track owners and infrastructure contractors.

For over quarter of a century, Rowe Hankins have been designing and manufacturing Speed Sensors, Non-intrusive Current Monitoring devices, Intelligent Wheel Flange Lubrication systems and AC and DC Earth Leakage Detection Units. With a global reputation for quality, reliability and innovation. Rowe Hankins’ experienced engineers have a long and successful track record giving the highest possible level of service to rail projects worldwide.

In addition, we provide electro-mechanical and electronic products service facilities to maintain, overhaul and repair circuit breakers, contactors and on-train monitoring and recording (OTMR) systems. At the forefront of our service facilities is a specialist DC current injection system, capable of 5000A continuous and ramped current output, extendable to 10,000A. In addition, we have a dedicated circuit breaker tester capable of testing up to 125 Amps and measure trip times down to 1 millisecond.

3

Rowe Hankins’ History 1979 Company founded a partnership between Toni Hankins and Roger Rowe, both qualified engineers with experience in military and traction projects.

1986 Rowe Hankins Ltd was established.

1987 RH range introduced circuit breakers with British Rail approval. First used, on the last tranches of Mark3 coaches in UK and the 10E2 SAT loco in South Africa. It went on to become the BR and BREL preferred breaker.

1988 Awarded BS 5750 accreditation.

1990 Moved into the Power House site with 4,000sq ft. factory space.

1992 Purchased the mining division of SEI (a GEC company) and started manufacturing intrinsically safe power supplies and coal cutting machinery control.

1993 Introduced an AC residual current circuit breaker based on the RH breaker and used on the Mark4 coach and the Networker Class 465 EMU. 1995 Awarded BSEN9002 1995.

1995 Designed and manufactured the first DC earth leakage units for insulation protection. Used on London Underground Northern Line and 1996 Jubilee Line tube stock.

1996 Completed the first factory extension to meet the growing demands of the new build traction market.

1998 Opened our Research and Development department to cope with the ever present problem of electronic component obsolescence on 30-35-year life expectancy of rolling stock.

1999 Introduced Dual Channel RFI and EMC immune Speed Sensors range with improved air gap.

Now approved as far afield as China, Australia and Brazil, as well as numerous European countries.

2001 Awarded BS EN ISO 9001 2000.

2004 Invested heavily in a new Service Centre for On-Train Monitor and Recording (OTMR), DC high speed contactors and circuit breakers, achieving a 48-hour turnaround.

2005 Awarded the LUL Central Line drive package refurbishment, which was completed on time and within budget.

2006 Invented the first Intelligent Wheel Flange Lubrication System and demonstrated on the Long Marsden site (due to be used on London’s new Elizabeth Line).

2009 Awarded IRIS accreditation.

2010 Completed type testing of an innovative low current signal monitor know as a NIC. 2011 Awarded a major contract from Network Rail to supply NIC’s improved asset monitoring, leading up to the London 2012 Olympics.

2013 Redesigned AC and DC earth leakage devices to reduce their size and weight.

2014 Extended the Power House factory space to 25,000sq ft. to meet increasing production capacity.

2015 Rowe Hankins receive industry recognition, awarded The Modern Railways Innovation Award 2015 and the Light Rail Best Supplier 2015.

2016 Introduction of the MRH miniature breaker range and the Split-Core NIC as part of our ongoing innovation and life cost reduction policy. Rowe Hankins celebrates 30 years in the industry.

4

Why Hydraulic Magnetic?

A well designed circuit is the best protection!

Hydraulic magnetic circuit breakers provide both short circuit and overload protection and are temperature independent. Packaged in a robust glass reinforced thermo-plastic casing, the hydraulic magnetic circuit breakers make the ideal circuit protection solution for endurance in the harshest of environments.

Hydraulic magnetic technology offers several advantages over thermal magnetic breakers and fuses. Thermal circuit breakers sense heat through a bimetal element and therefore require a cooling period in order to be reset; fuses have to be replaced entirely. Hydraulic magnetic circuit breakers sense current and are consequently not subject to a cooling period, making them instantly resettable under normal operating conditions, reducing downtime.

Other advantages include: instant trip on short circuit, accurate regulation of trip time under varying ambient temperatures, anti-tamper trip free mechanism and trip currents set to precise amperage levels.

The Rowe Hankins range of hydraulic magnetic circuit breakers is designed and made to last the life of a train.

• Compact design • Continuous operation at 100% rated current at temperatures between -40°C and +85°C • Low smoke and zero halogen • Resistant to corrosion • 1-6 poles are available with multiple poles internally coupled; a choice of series, relay and series auxilliary trip curves available • The range has 10,000 switching operations • DC, 50/60Hz, AC/DC and 400Hz options • A simple On/Off toggle switch, this signage enables the circuit breaker to be fitted in either reverse orientation • Designed to withstand high shock and vibration in order to stop nuisance tripping, ideal for decreasing downtime.

• Normal and mid-trip option • Available with M5 or M6 stud terminals

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How they work Hydraulic Magnetic circuit breakers offer high performance, high current applications and provide precision protection and offer great advantages such as, elimimation of nuisance tripping, continuous operation at 100% of current, immediately resettable and they are temperature independent.

The Hydraulic Magnetic circuit breaker operates on load-current produced magnetic flux variation in a solenoid. The solenoid coil is wound around a sealed non-magnetic tube, which is filled with a silicone fluid and contains a moveable core held under the tension of the spring.

The core moves against the spring in proportion to the load current. This movement eventually causes the circuit breaker mechanism to trip. The tube plays an essential role in the magnetic circuit and the silicone liquid controls the movement speed of the core.

Hydraulic Magnetic circuit breakers are available with a choice of non-delayed or time delayed trip characteristics.

A

Operating Mechanism of a magnetic circuit breaker.

6

B

The MRH and RH Range The Rowe Hankins range of tractionised miniature circuit breakers is suitable for both new build and retrofit projects.

Rowe Hankins Ltd is a global traction MCB specialist and has been supplying circuit breakers to the rail industry since 1986. Offering precise, specification assured, nuisance-free circuit protection.

The MRH & RH ranges are tolerant of shock and vibration, are unaffected by high inrush currents or temperature and will only trip at their rated capacity. They can be specified with differing time delay curves to compensate for electrical anomalies. There are many options available to permit customisation to the application including integrated auxiliary switches, alarms and remote indicators.

The accurate and efficient protection offered by Rowe Hankins circuit breakers ensures continuous and steady operation of the Uninterruptible Power Supplies (UPS) unit.

The range is according to the approvals: - BS 6853 - EN60068-2-38 - NF F16-101 - EN50155 - EN45545-2 - EN60068-2-11 - EN60934 - Protection degree: EN60529 - EN60947-2 - UL recognised - NF F62-001 - CSA Certified

- VDE Approved - CE Compliant - CC Approved - UL 1500 Certified - BS EN 50125-1 - NFF16-101

Specification Shock Shall not trip when tested per MIL-STD-202, at 100% rated current applied to delayed units, except for 90% current (eg. handle down). Instantaneous units shall have 80% rated current applied in all cases.

Vibration Shall not trip when vibrated per MIL-STD-202, when 100% rated current is applied to delayed units and 80% rated current to instantaneous units.

Trip Free Mechanism The operating handle moves forcibly and positively to the OFF or the mid trip position on start – overload (**The handle position cannot stop the contacts from opening).

Ambient Operation Can operate normally in temperatures from –40° C to +85°C Endurance In many applications contact wear due to the electrical load determines unit life. At maximum electrical ratings, the MRH Range can perform 10,000 operations at rated current and voltage at a maximum rate of 6 operations per minute. Operating as a switch, the operating life exceeds 10,000 operations, 6000 at rated load and 4000 without load at a rate of 6 per minute. (Up to 20,000 in certain circumstances).

Dielectric Strength The MRH Range protectors withstand 3750Vac, 60Hz for 60 seconds between all electrically isolated terminals. The auxiliary switch terminals shall withstand 600Vac, 60Hz for REG and REC types. Four terminal dual coil and relay construction will withstand 1500Vac. Electrical Characteristics 50-100 Amps, 80VDC, 240Vac Max., 240/415Vac at 50 Amps Max., 50/60Hz and 400Hz. Units rated for 240/415Vac and above 50 Amps are not suitable for across-the-line motor starting.

Poles 1-6 poles available.

Construction Main body is black, with a white toggle, “On” and “Off” positions are to be marked “І” and “0” respectively. Maximum torque specifications of the M5 or M6 stud terminals are 2.3Nm and 4.0Nm respectively.

Auxiliary Switch VDE approved switches have a maximum UL rating of 10Amp, 250 Volts, 60Hz (REC type); or 0.1Amp, 125 Volts, 60Hz (REG; type). The maximum VDE ratings are 1Amp, 125 Volts, 60Hz (REC type); 0.1 Amp, 125 Volts, 60Hz (REG type).

Labelling Each breaker is to be fitted with a label that bears the following: Manufacturer, Year of Manufacture, Type of Reference / Rowe Hankins part-code.

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MRH Trip Curves 1 (AC)

2 (AC)

Trip Curves

The MRH Range offers a range of delays; from instantaneous trips to slow allowing for a long overload yet also medium delays for wiring and fast delays for protection of electronics. High Inrush variations are also available.

3 (AC)

1 (x 10 Inrush)

1 (DC)

The short curve allows the most prolonged overload before tripping occurs, this type is designed to prevent nuisance tripping in motor circuits.

2 (x 18 Inrush)

2 (DC)

3 (DC)

The medium delay curve allows mixed loads of motors, lights and resistive heating; being the most widely used curve graph and is perfect for general use applications.

3 (x25 Inrush)

The long delay offers only a momentary delay before tripping, allowing for protection of electronic circuits and equipment.

P (AC)

P (DC)

P (Instant) The instant trip has no intentional time delay and yet allows for rare situations in electronic equipment with the magnetic shunt allowing for maximum possibilities.

Single Pole, Standard Stud Terminal

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RH Trip Curves 1 (AC)

2 (AC)

Trip Curves

The RH Range offers a range of delays; from instantaneous trips to slow allowing for a long overload yet also medium delays for wiring and fast delays for protection of electronics. High Inrush variations are also available.

1 (x 10 Inrush)

3 (AC)

1 (DC)

The short curve allows the most prolonged overload before tripping occurs, this type is designed to prevent nuisance tripping in motor circuits.

2 (x 18 Inrush)

The medium delay curve allows mixed loads of motors, lights and resistive heating; being the most widely used curve graph and is perfect for general use applications.

3 (x25 Inrush) 2 (DC)

3 (DC)

The long delay offers only a momentary delay before tripping, allowing for protection of electronic circuits and equipment.

P (Instant) The instant trip has no intentional time delay and yet allows for rare situations in electronic equipment with the magnetic shunt allowing for maximum possibilities.

Single Pole, Standard Stud Terminal

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How to Order MRH Range 1. Choose the number of poles required (1-4).

2. Choose your voltage and frequency between, 240-480Vac 50/60Hz (A), 125Vdc (B), & AC & DC (D).

No. of 3. Choose your internal configuration of Inrush from 10x, 18x, 25x Poles depending on units protected.

4. Choose your Trip curve: Instant (P), Slow (1), Medium (2), Fast (3), 1 5. Choose your current rating from 0.1 - 100 (0.1 intervals available).

2 *** Please note the MRH Range as standard has: • M3 Inserts.

• A M5 terminal unless the current rating is 80A or over in which case an M6 terminal is standard.

• A white toggle.

• Black I/0 signage on the toggle.

• Please note that AUX are standard = 0.110 quick connect terminals.

3

Current Type

A (AC) B (DC)

Trip Curve

Circuit Type 0 - (Switch Only) 2 (Series Trip + Aux) 3 (Series Trip Only) 8 (Series Trip Only) 9 (Series Trip + Aux) 38 (Series Trip Only) 39 (Series Trip + Aux)

1

Current Rating

2

0.1A

3

100A

p

4

EG. MRH: 4-A3-2-10 The above would be 4-pole series trip (10x Inrush) AC breaker at 10-amp with a medium (2) trip.

RH Range 1. Choose the number of poles required (1-6) 2. Choose your voltage and frequency between, 240-480Vac No. of 50/60Hz (A), 125Vdc (B), & AC & DC (D).

Poles 3. Choose your internal configuration of Inrush from 10x, 18x, 25x 1 depending on units protected.

4. Choose your Trip curve: Instant (P), Slow (1), Medium (2), Fast (3), 2 5. Choose your current rating from 0.1 - 100 (0.1 intervals available). *** Please note the RH Range as standard has: • 45mm Studs • A white toggle • Black I/0 Signage on the toggle • *Multi-pole breakers need not be all the same voltage, current or circuit configurations

3 4 5

Trip Curve

Current Type

A (AC) B (DC) D (AC & DC)

Circuit Type 0 - (Switch Only) 2 (Series Trip + Aux) 3 (Series Trip Only) 8 (Series Trip Only) 9 (Series Trip + Aux) 38 (Series Trip Only) 39 (Series Trip + Aux)

1

Current Rating

2

0.1A

3

100A

p

6

EG. RH1-B3-2-5 The above would be single pole, series trip breaker at 125Vdc system at 5A rating-amp current rating with Standard 45mm studs.

For specific requirements, please contact our Engineering Team as other variations are available upon request.

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RCBO’s Rowe Hankins Residual Circuit Breaker Overloads are used to measure AC residual current and trip when a fault is detected.

The RCBOs are available in 2 and 4 pole configurations - 2 pole series 373 and the 4 pole series 368. Both 2 and 4 pole versions are available at MCB ratings of up to 100 amps and different residual current trip levels.

How they work?

The circuit uses a current transformer to measure AC current imbalance. The signal is amplified, rectified and then passed to a time delay circuit. If the signal is present after the delay, then a solid state switch energises the supply circuit breaker trip coil.

Options for either a fixed time delay or an inverse time delay trip characteristic can be specified.

Trip currents can be specified for factory setting at levels between 5 and 300mA (Trips levels up to 2A are possible on a 4 pole series). A unit with a trip level of 5mA is specifically suited for the American market to meet the requirements of the ‘National Electrical Code NFPA 70’.

A wide range of time delays can be specified and set during manufacture. The detector circuit power supply is derived from the ac supply. A test signal can be injected through the current transformer from a test button to confirm correct operation.

Specifications: • Our RCBO range uses AC residual current, and trip levels are typically between 30mA, 100mA and 300mA. • A range of various trip characteristics are available: instantaneous fixed time delay and inverse time delay.

• Fitted with a ‘test button’ to check the circuit breakers trip setting when an appropriate residual current fault is generated internally.

• Electrical connections to the unit are via standard M6 terminals, auxiliary contacts can be used to control and monitor the state of the circuit breaker.

• Inverse time curve - the operating time of the RCBO is reduced as the residual current increases.

• Fixed time delay – the units are tolerant of traction auxilliary supply functions.

• Designed for harsh environments – Industrial and Railway Traction.

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Global Customer Supply

London Underground

Efficient - Innovative - Safe Rowe Hankins Ltd Power House Parker Street Bury Lancashire BL9 0RJ

Telephone: +44 (0)161 765 3000 Fax: +44 (0)161 705 2900 info@rowehankins.com www.rowehankins.com