Characteristics - Chauvin Arnoux C.A 771 Notice De Fonctionnement

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3. CHARACTERISTICS

3.1. REFERENCE CONDITIONS
Influence quantity
Temperature
Relative humidity
Power supply voltage
Frequency of the measured signal
Type of signal
External electrical field
External DC magnetic field
3.2. ELECTRICAL CHARACTERISTICS
3.2.1. VOLTAGE
Nominal voltages: 12, 24, 50, 127, 230, 400, 690, 1000 V
Operating frequency: DC and 16.67 to 800 Hz
Maximum input current: 3.5 mA .
rms
Input impedance > 500 kW.
Response time < 500 ms.
Response time of ELV indicator < 1 s.
The indicator corresponding to voltage V lights up before the voltage reaches 85%V.
If no indicator is lit, the voltage present is < 12 V.
The C.A 771 must be used on voltage-normalized networks only.
Operating cycle: 30 s (maximum time that the device can be connected to a live
element) - 240 s (minimum rest time during which the detector must not be con-
nected to a live element).
3.2.2. CONTINUITY
Continuity detection is inhibited if a voltage > 1 V is present.
The triggering thresholds are:
„ 100 W < R < 150 W
2 kW < R < 3 kW
„
„ 60 kW < R < 90 kW
„ 300 kW < R < 450 kW
Test current ≤ 1 mA
Open circuit voltage ≤ 3.3 V
3.2.3. 3.2.3. PHASE IDENTIFICATION
15 Hz < frequency < 65 Hz
for 45 Hz < frequency ≤ 65 Hz
50 V < voltage < 1000 V
ac ac
150 V < voltage < 1000 V for frequency < 45 Hz
ac ac
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Reference values
23 ± 5°C
30 to 75% RH
3 ± 0.1 V
DC or 45 to 65 Hz
sinusoidal
< 1 V/m
< 40 A/m
/ V and 1400 V
ac dc
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dc
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