Power Supply; Environmental Parameters - Chauvin Arnoux C.A 6505 Notice De Fonctionnement

5.2.4. CAPACITANCE
This measurement is made at the end of each insulation measurement, while the circuit is being
discharged.
Specified measurement range
Resolution
Accuracy

5.3. POWER SUPPLY

The equipment power supply is obtained from:

Rechargeable NiMh batteries - 8 x 1.2 V / 3.5 Ah
Line voltage: 85 to 256 V / 50-60 Hz
Consumption

For insulation measurements at 5000 V and 1 mA: 11 W
For voltage measurements: 0.9 W
On standby: 0.01 W
Minimum operating time (per IEC 61557)

Test voltage
Nominal load
Number of measurements (with 25 s pause
between each measurement)
In voltage measurement mode, the battery life is 35 hours.
Recharge time

Charging must be done between 20 and 30°C.
6 hours to recover 100% capacity (10 hours if the battery is completely run down).
0.5 hours to recover 10% capacity (charge life: 2 days approximately)
It is essential to charge the battery before calibration tests.
Note: It is possible to recharge the batteries while performing insulation measurements provided that the
values measured are higher than 20 MΩ. In this case, the recharging time is higher than 6 hours.
Otherwise, the battery is discharged faster than it is charged.

5.4. ENvIRONMENTAL PARAMETERS

Range of use

-10°C to 40°C, during battery recharging
-10°C to 55°C, during measurement
20% to 80% RH
Storage

-40 at 70°C, from 10% to 90% RH
0.001 - 9.999 µF
1 nF
10% ± 1 pt
500 V 1000 V
500 kΩ 1 MΩ
6500 5500

10.00 - 49.99 µF
10 nF
10%
2500 V 5000 V
2.5 MΩ 5 MΩ
4000 1500