Characteristics; Reference Conditions; Electrical Characteristics; Phase Identification - Chauvin Arnoux C.A 742 Manual De Instrucciones

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 V
and 750 V
dc
Frequency of operation: DC and 16.67 at 800Hz.
Maximum input current: 3.5 mA
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 V <voltage<690 V
ac
400 V <voltage<690 V
ac
.
ac
ac
.
rms
and 45Hz≤frequency ≤65Hz
and 16.67Hz≤frequency<45Hz
32
Reference values
23±5°C
30 to 75 % HR
3±0,1V
DC or 45 to 65 Hz
sinusoidal
<1V/m
<40A/m
/V
ac dc