Characteristics - Chauvin Arnoux C.A 773 Notice De Fonctionnement

4.1. 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
4.2. ELECTRICAL CHARACTERISTICS
4.2.1. VOLTAGE
Nominal voltages: 12, 24, 50, 127, 230, 400, 690, 1000 V
Intrinsic uncertainty: ± (3% + 5 ct)
Resolution: 0,1 V from 1 to 299,9 V
1 V from de 300 V
Operating frequency: DC and 16.67 to 800 Hz
Maximum input current: 3.5 mA
Internal impedance at 50 V
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 the voltage present is < 12 V, no indicator is lit.
If the voltage present is < 1 V, the digital display is off.
The C.A 773 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).
4.2.2. CONTINUITY
Continuity detection is inhibited if a voltage > 1 V is present.
Measurement range: 0 to 3 kW
Intrinsic uncertainty: ± (3% + 5 ct)
Resolution: 0,1 W from 1 to 299,9 W
0,001 kW from 0,3 to 3 kW
Audible signal triggering threshold: 100 W -0% +50%
Test current ≤ 1 mA
Open circuit voltage ≤ 5 V
4.2.3. PHASE IDENTIFICATION
15 Hz < frequency < 65 Hz
50 V < voltage < 1000 V
ac
150 V < voltage < 1000 V
ac

4. CHARACTERISTICS

.
rms
: 1100 kW. / 6,5 kW if load switching.
ac
for 45 Hz < frequency ≤ 65 Hz
ac
for frequency < 45 Hz
ac
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
37
/ V and 1400 V
ac dc
.
dc