Instructions

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3. CHARACTERISTICS
3.1. REFERENCE CONDITIONS
Quantity of influence Reference values
Temperature 23±5°C
Relative humidity 30 to 75 % HR
Supply voltage 3±0,1V
Frequency of the measured signal DC or 45 to 65 Hz
Type of signal sinusoidal
External electric field <1V/m
DC external magnetic field <40A/m
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
15Hz<frequency<65Hz
50 Vac<voltage<690 Vac and 45Hz<frequency ≤65Hz
150 Vac<voltage<690 Vac and frequency<45Hz