Specifications; Reference Conditions; Characteristics Per Function; Insulation Resistance - Chauvin Arnoux C.A 6545 Notice De Fonctionnement

7.1

Reference conditions

Influence quantities
Temperature
Relative humidity
Supply voltage
Frequency range
Capacity in parallel on resistor
Electrical field
Magnetic field
7.2

Characteristics per function

7.2.1 Voltage
Characteristics
Measurement range
Frequency range (1)
Resolution
Accuracy
Input impedance
(1) Over 500 Hz, the small display indicates "- - - -" and the main display gives only an assessment of the peak value
of the measured voltage.
Measurement category: 1000 V CAT III or 2500 V CAT I (transients ≤ 2.5 kV)
7.2.2

Insulation resistance

Method: Voltage-current measurement per EN 61557-2 (ed. 02/97)
Nominal output voltage: 500, 1000, 2500, 5000 V
No adjustment in variable mode: 10 V from 40 V to 1000 V
Off-load voltage: ≤ 1.02 x Un ±2% (Un ±2% in variable mode)
Max. overrunning of voltage Un: (1.05 + dISt) Un +50 V
Nominal current: ≥ 1 mA
Short-circuit current: < 1.6 mA ±5%
Load current on capacitive component: 3 mA
Maximum acceptable AC voltage during measurement: U
Measuring ranges:
500 V : 30 kΩ... 1.999 TΩ
1000 V : 100 kΩ... 3.999 TΩ
2500 V : 100 kΩ... 9.99 TΩ
5000 V : 300 kΩ... 9.99 TΩ
Variable (40 V...5100 V) : see following graph

7. SPECIFICATIONS

Reference values
23°C ± 3 K
45% to 55 %
9 to 12 V
DC and 15.3...65 Hz
0 µF
nil
< 40 A/m
1.0...99.9 V 100...999 V
DC and 15 Hz...500 Hz
0.1 V 1 V
1% reading +5 pt
750 kΩ at 3 MΩ depending on measured voltage
DC
100 V from 1000V to 5100 V
with dISt = 0.03 – 0.10 or 0.20
DC
approximately when starting measurement
DC
57
1000...2500 V
2 V
1% reading +1pt
(or adjustable from 40 V to 5100 V)
= (1.05 + dISt) Un
peak
with dISt = 0.03 – 0.10 or 0.20
2501...5100 V
DC
2 V