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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 V
ac
/V
dc
and 750 V
dc
.
Frequency of operation: DC and 16.67 at 800Hz.
Maximum input current: 3.5 mA
rms
.
Input impedance >300k
W
.
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 740N 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 100
W
and 150
W
.
Test current
≤
1mA
Open-circuit voltage
≤
3.3V
3.2.3. PHASE IDENTIFICATION
15Hz<frequency<65Hz
50 V
ac
<voltage<690 V
ac
and 45Hz<frequency
≤
65Hz
150 V
ac
<voltage<690 V
ac
and frequency<45Hz
