Characteristics - Chauvin Arnoux C.A 742 Notice De Fonctionnement

3. CHARACTERISTICS

3.1. REFERENCE CONDITIONS
Quantity of influence
Temperature
Relative humidity
Supply voltage
Frequency of the measured signal
Type of signal
External electric field
DC external magnetic field
3.2. ELECTRICAL CHARACTERISTICS
3.2.1. VOLTAGE
Nominal voltages: 12, 24, 50, 127, 230, 400, 690 Vac/Vdc
and 750 Vdc.
Frequency of operation: DC and 16.67 at 800Hz.
Maximum input current: 3.5 mArms.
Input impedance >300kW.
Response time <500ms.
The indicator corresponding to voltage V lights before the
voltage reaches 85% V.
If no indicator lights, the voltage present is < 12V.
The C.A 742 must be used only on networks at standard-
ized voltages.
Operating cycle: 30s (maximum duration for which the device
can remain connected to a live element) - 240s (minimum
resting time during which the detector must not be connected
to a live element).
3.2.2. CONTINUITY
Continuity detection is disabled if a voltage > 1V is present.
Triggering threshold between 100W and 150W.
Test current ≤1mA
Open-circuit voltage ≤3.3V
3.2.3. PHASE IDENTIFICATION
120 Vac<voltage<690 Vac and 45Hz≤frequency ≤65Hz
400 Vac<voltage<690 Vac and 16.67Hz≤frequency<45Hz
Reference values
DC or 45 to 65 Hz
28
23±5°C
30 to 75 % HR
3±0,1V
sinusoidal
<1V/m
<40A/m