C-A 405 WATTMETER Wattmètre analogique mono et triphasé Single and 3-phase analogue wattmeter — c2S>—
480 V 360 V \ 7 0 240 V 5A 180V 120 V 60 V -
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Mode d'emploi / User's manual C H A U V IN ARNOUX
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C.A 405
WATTUETBH
MD 140-51-05 FFVAN Ed.1
Code
906 120 263
190 rue Championnet - 75876 PARIS Cedex 18 - FRANCE Tél. (33) 01 44 85 44 85 - Télex 269816 - Télécopieur (33) 01 46 27 73 89
ENGLISH READ THE INSTRUCTIONS BEFORE USING THE INSTRUMENT
A
SAFETY PRECAUTIONS
Put the instrument in a perfectly stable position (horizontal or at an angle on its fold-away stand). Check that the needle is correctly set to the zero mark (adjustment screw at the centre of the instrument). Make sure that the voltage and current wires are respectively connected to the voltage and current terminals. Ensure the range switch is correctly positioned: when the order of magnitude is not known, place the switch on the highest range then progressively lower to the appropriate range. A range is correctly selected only if the switch is placed exactly on this range. Replace the fuse with one of the same value and type. Clean the case with a soft cloth without solvant.
Summary page PRESENTATION........................................................................................... 14 SPECIFICATIONS......................................................................................... 15 REPLACING THE FUSE............................................................................... 19 MEASUREMENTS........................................................................................ 20 I - Active power on DC or single phase....................................................20 II - Active power on 3-phase 3 wire balanced........................................... 21 III - Reactive power on 3-phase 3 wire balanced.......................................22 IV - Active power on 3-phase 3 wire non balanced....................................23 V - Reactive power on 3-phase 3 wire non balanced.............................24 VI - Active power on 3-phase 4 wire non balanced....................................24 VII- Reactive power on 3-phase 4 wire.....................................................25 TO ORDER....................................................................................................25
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PRESENTATION
The C.A 405 combines the following functions in a particularly sturdy and dustproof case: ■ DC wattmeter ■ Single phase AC wattmeter ■ 3-phase AC wattmeter Simplicity and safety in use have guided the design of this instrument; ■ Ferro-dynamic instrument with oil dampers ■ Single switch for selection of the ranges ■ Analogue display with anti-parallax mirror ■ Table of reading coefficients printed on the instrument case ■ Colour coded safety input sockets
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SPECIFICATIONS
Accuracy class 1% on single phase 2% on 3-phase Distortion magnitudes
Reference conditions
Current
5A±3%
Voltage
60 V -120 V - 180 V - 240 V - 360 V 480 V - 60V3 V - 120V3 V - 180V3 V 240V3 V ± 2% with, on 3-phase: VI =V2 = V3±1%
Ambient temperature
23 ± 2 X
Humidity
45% RH to 55% RH
Distortion
0,5%
Crest factor
V2
Frequency
45 Hz to 65 Hz
External magnetic field
from 0 to 40A/m at any frequency of DC current to 65Hz and in any direction
Operating position
horizontal ± V
Cos(p
*-o,ot
Sp^ctflcrtlon? of the currgnt circuit R = 40mS2 ±1% L =25pH
±1%
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Specifipgtipng pf the voltgge-clrgMit Consumption of the voltage circuit: 1mA at Un. single phase range
300 W
600 W
900 W
1200 W
1800W
2400 W
R circuit voltage
60 kO
120 kil
180 ki2
240 ka
360 ka
480 ka
3-phase range
900 W
1800W
2700 W
3600 W
120kQ
240 ka
360 ka
480 ka
R circuit voltage
^
Note : R circuit voltage is given between phase and artificial negative.
2.5 seconds approx. Overloads â– Permissible permanent overloads The current or voltage circuits can withstand permanent overloads of 25% â– Permissible overloads of limited duration The ranges can be overloaded according to the following table, for a maximum measurement time of 2 to 3 minutes. 10A on the 5A range 120V on the 60V range
220V on the 60 V3 V range
240V on the 120V range
380V on the 120 >/3 V range
240V on the 180V range
480V on the 180 ^ V range
380V on the 240V range 480V on the 360V range 600V on the 480V range
600V on the 240 >/3 V range
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Permissible overloads of short duration The instrument can withstand accidental overloads for very short times (5s). 10 In on the 5A range 400V on the 60V - 1 20V -180V -
380V on
the 60 ^3 V range
240V ranges 800V on the 360V - 1 80V ranges
500V on the 120 ,/3 V range 800V on the 180 V3 V - 240 V range.
VARIATIONS IN THE OPERATING RANGE Distortion In the operating range
Operating range
Distortion magnitude Min
Typ
Max
Typ
Max
Temperature
-10°C
23°C
55°C
± 0.5%/10'^C
±0.8%/10°C
Humidity in RH
20%
50%
90%
±0.15%/10% RH
± 0.2%/10% RH
Operating position
-30^^
Horizontal
+30°
-
± 0,5%
External magnetic field
0
40 A/m
400 A/m
-
± 0.5%
Distortion rate (voltage)
0
30%
50%
±1.5%
± 3% ,
Distortion rate (current)
0
30%
100%
±1.5%
±3%
Crest factor (voltage)
1
72
2
±1%
±4%
Crest factor (current)
1
72
4.5
± 1%
±3%
Frequency
0
50 Hz
500 Hz
±0.8%
±1.5%
15 Hz
50 Hz
500 Hz
±2%
±3%
-1
0.2cap<Cos (p<0.2 ind.
+1
±0.5%
±1%
Frequency (on 3-phase) Cos<p
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1 Nominal reference range It Operating range III Storage range
RH (%)
T(-C)
Dual insulation equipment. IEC1010
Dielectric strength test voltage. - 5.55 kV between the case and the terminals short-circuited. - 3 kV for 1 minute between the current terminals connected together and the voltage terminals connected together. Distance in the air and leakage lines > 12 mm (except terminals).
lEC 80t
Electric shocks and rapid transients.
JEC 68.2.27
The instrument can withstand a peak acceleration of 490m/s2 i.e. 50g.
lEC 68.2.32
The instrument dropped from 50 cm is undamaged.
lEC 68.2.6
Vibration, number of cycles: 5. Peak amplitude displacement: 0.15 mm. Variations in the frequency: 10 Hz - 55 Hz -10 Hz. Sweep speed: 1 octave per minute.
lEC 529
Watertightness IP 403.
gigstricaiprQtectieD ■ 1 fuse 6.3 A time delay HBC 380 V 100 kA.
b>m^n$iQ.ps
« eight
■ Dimensions : 165 x 105 x 50 mm. ■ Weight
18
:450g.
REPLACING THE FUSE
Access to the fuse is by opening the bacl< of the case.
Fuse 6.3A HBC 100 l<A380 VAC (6.3 X 32 mm)
Note ; The case can only be opened if the leads are disconnected.
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MEASUREMENTS
/ -
Active power (Watts) DC or single phase measurements
N Place the switch on one of the 6 ranges on the left, corresponding to the voltage of the circuit to measure. Connect the C.A 405 as shown in the diagram (the terminal on the right, V3, is not connected). Read the deflection of the needle on the appropriate measurement scale. Read the va lue in such a way that the reflection of the needle on the anti parallax mirror is hidden. Apply the coefficient from the table on the left corresponding to the voltage indicated by the switch. Example: • With the switch on the 120V range • In the table, the coefficient corresponding to 120V is 5. • The result in Watts is therefore : Number of divisions read x 5
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B /With current clamp Place the switch on one of the 6 ranges on the left corresponding to the voltage of the circuit. Connect the C.A 405 as shown in the diagram (the temiinal on the right, V3, is not connected). Read off the deflection of the needle on the appropriate scale. Apply the coefficient from the table on the left con'esponding to the range selected, on one hand, and the coefficient applicable to the transformation ratio of the clamp on the other hand. Example: • A coefficient of 5 corresponds to the 120V range. • For a clamp with a ratio of 1500/5 the corresponding coefficient is • From which the result of the measurement in Watts: Number of divisions read x 5 x 300
i.e. 300.
II - Activepower (Watts) on 3-phase 3 wire balanced A/ without current clamp Place the switch on one of the 4 ranges on the right corresponding to the voltage of the circuit measured. Connect the C.A 405 as shown on the diagram. Read the deflection of the needle on scale 90.
V3 Source
Use
V2 VI
Apply the coefficient from the table on the right corresponding to the range chosen. Example: • With switch on range 180V Vs • The table gives the coefficient corresponding to the range: 30
I
IIIIPI M
II
III
• The result of the measurement In Watts is : Number of divisions read x 30.
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B/ With current clamp ■ Same procedure as before with connec tions as shown on the diagram opposite. ■ Tal<e into account the coefficient according to the ratio of the clamp.
^
Source
V2
Example: • The coefficient 30 corresponds to range 180V Vs • For a clamp with a ratio of 1500/5 the coefficient to apply is i.e. 300. • From which the result of the measurement in Watts: Number of divisions read x 30 x 300. /// -
Reactive power (vars) on 3-phase 3 wire balanced
A/ Without current clamp
single phase with connections as shown on the diagram opposite In addition to the coefficient for the position of the switch, apply the coefficient V3 for 3-phase. See example of measurement on single phase: Q (var) = Number of divisions read x 5 x V3
22
B/ With current clamp ■ Same procedure as for the measurement on single phase with connections as shown on the diagram opposite. ■ Inadditiontothecoefficientsforthe range and the position of the switch, apply the coefficient ^ for 3-phase.
V3
Utilisation
Source
.id.
See example of measurement on single phase: Q (var) = Number of divisions read x6 x Vs
IV - Active power, (Watts) 3-phase 3 wire non baianced m In this case, use the two wattmeter method and find the sum of the two single phase
powers PI + P2 to obtain the total active power P. ■ See connection on the diagram below. Note : refer to the paragraph on single phase measurement with clamp for reading of P1 andP2.
PI
P2
23
V
-
Reactivé power, (vars) 3-phase 3 wire non baianced
Take the sum of the three powers P1 + P2 + P3 and apply the coefficient -L to get the total reactive power. V3 See connection shown on the diagram below.
P1
P2
P3
VI-Active power (Watts) on 3-phase 4 wire non baianced ■ Add the three single phase powers P1 + P2 + P3 to find the total active power P. ■ See connection shown on the diagram below. Note : Refer to the paragraph on single phase measurement with clamp to read P1, P2 and PS. Source
24
Use
VI-Reactivepower (vars) on 3-phase 4 wire m Proceed in the same way as for reactive power on 3-phase 3 wire non balanced whithout taking into account the neutral wire.
TO ORDER
Reference C.A 405 WATTMETER............................................................................ 1703.05 Single phase and 3-phase analogue wattmeter supplied with a Userâ&#x20AC;&#x2122;s manual. Accessories - Shockproof case.....................................................................................2980.10 - Safety leads n°181 A/181B with prod (set of two
x 1.5m)................ 1008.19
- Test accessories
M.AT 2 (set of 8 ) ...........................................1017.59
- Clamp C32 (1 to
1200A -1000/5 - leads)................................ 1200.31
- Clamp C33 (1 to
1200A - 3 ranges: 250/5,500/5, 1000/5 - sockets)........ 1200.44
- Clamp D33 (1 to
3600A - 3000/5 - sockets)............................. 1200.52
- Clamp D34 (1 to 1800A - 3 ranges: 500/5, 1000/5, 1500/5 - sockets)...................... 1200.53 - Clamp D35 (1 to 3600A - 3 ranges: 1000/5, 2000/5, 3000/5 - sockets).................... 1200.54 Spares - Set of 10 fuses 6.3 A HBC (380 V -100 kA)..........................................2970.16
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