Vatímetro CA 405

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

13

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%

15

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

20

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.

21

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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