Insulation Resistance - Chauvin Arnoux C.A 6505 Notice De Fonctionnement

Current measurement during the insulation measurement:
Measure- 0.000 - 0.250 -
ment range 0.250 nA 9.999 nA
Resolution 1 pA
Accuracy 15% ± 10 pt
The 0.250 nA and 3000 µA ranges are not used for the insulation resistance calculations.

5.2.3. INSULATION RESISTANCE

Method: Voltage-current measurement as per IEC 61557-2 (Ed. 02/97)

Nominal output voltage: 500, 1000, 2500, 5000 V

No-load voltage: 510, 1020, 2550 and 5100 V ± 2% and Un ± 2% in variable mode

variable voltage adjustment step: 10 V from 40 V to 1000 V

≥
Nominal current:
 1 mA
Short-circuit current: 1.6 mA ± 5%

Maximum acceptable spurious voltage during the measurement: Upeak = 0.4 Un

Accuracy

Test voltage
Specified 10 - 999 kΩ
measurement range 1.000 - 3.999 MΩ
Resolution
Accuracy
Test voltage
Specified
4.00 - 39.99 GΩ
measurement range
Resolution 10 MΩ
Accuracy
Accuracy in variable mode

Rmeasured = Un / 250 pA
Test voltage 40 - 160 V
Rmeasured min
Rmeasured max 160.0 GΩ - 640.0 GΩ
To obtain the accuracy in variable voltage mode, calculate from the accuracies of the fixed voltages
above.
10.00 - 100.0 -
99.99 nA 999.9 nA
1 pA 10 pA 100 pA
10% 5%
100 V from 1000 V to 5100 V
at the nominal voltage
dc
(3.1 mA max. when the measurement is started)
500 V - 1000 V - 2500 V - 5000 V
4.00 - 39.99 MΩ
1 kΩ 10 kΩ
500 V - 1000 V - 2500 V - 5000 V
40.0 - 399.9 GΩ
100 MΩ
± 5% + 3 pt
170 - 510 V
10 kΩ 10 kΩ
640.0 GΩ - 2.040 TΩ

1.000 - 10.00 -
9.999 µA 99.99 µA
1 nA 10 nA
3%
or adjustable from 40 V to 5100 V
dc
40.0 - 399.9 MΩ
100 kΩ
±5% + 3 pt
1000 V - 2500 V
5000 V
0.400 - 1.999 TΩ 2.000 - 3.999 TΩ
1 GΩ
±1 5% + 10 pt
520 - 1500 V
10 kΩ
2.080 TΩ - 6.000 TΩ
100.0 - 1000 -
999.9 µA 3000 µA
100 nA 1 µA
5%
0.400 - 3.999 GΩ
1 MΩ
2500 V
5000 V
4.00 - 9.99 TΩ
10 GΩ
1600 - 5100 V
10 kΩ
6.400 TΩ - 10.00 TΩ