Leakage Current Measurement; Power Supply; Average Operating Time - Chauvin Arnoux C.A 6545 Notice De Fonctionnement

 Leakage current measurement
Specifi ed
0.000 to
measurement
0.250 nA
range
Resolution 1 pA
15%
Accuracy
+ 10 pt
 Calculation of terms DAR and PI
0.02...50.00
Specifi ed range
Resolution
Accuracy
 Calculation of term DD
0.02...50.00
Specifi ed range
Resolution
Accuracy

7.3. POWER SUPPLY

 The equipment power supply is obtained from:
Rechargeable NiMh batteries - 8 x 1.2 V / 3.5 Ah
External recharge: 85 to 256 V / 50-60 Hz
 Minimum operating time (per IEC 61557-2)
Test voltage
Nominal load
Number of 5-s measurements at
nominal load (with 25-s pause between
measurements)
 Average operating time
Assuming 1-minute DAR measurements 10 times a day and 10 -minute PI measurements 5 times a day,
the operating time would be 15 workdays or 3 weeks
 Recharging time
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)
Note: It is possible to recharge the batteries while performing insulation measurements provided that
the values measured are greater than 20 M  . In this case, the recharging time is longer than 6
hours and depends on the frequency of the measurements.
0.251 to 10.00 to 100.0 to
9.999 nA 99.99 nA 999.9 nA
10 pA 100 pA
10%
0.01
5% + 1 pt
0.01
10% + 1 pt
500 V
500 k 
6500
75
1.000 to 10.00 to 100.0 to
9.999 µA 99.99 µA 999.9 µA
1 nA 10 nA 100 nA
5%
1000 V 2500 V
1 M  2.5 M 
5500 4000
1000 to
3000 µA
1 µA
10%
5000 V
5 M 
1500