Chauvin Arnoux C.A 6549 Mode D'emploi page 88

q Precision and resistance range in variable / adjustable voltage mode
Max. resistance measured = test voltage / 250pA
Test
voltage
Min.
measured
resistance
Max.
measured
resistance
Note : the precision in variable mode must be interpolated from the precision tables provided for fixed test
voltages.
q Measurement of DC voltage during insulation test
Specified measurement domain
Resolution
Accuracy
During the measurement, the maximum acceptable voltage on the terminals is (AC or DC):
U peak = U nominal * (1.05 + dlSt) where dlSt = 3%, 10%, or 20%
q Measurement of DC voltage during insulation test
Specified measurement
domain
Resolution
Accuracy
q
Typical curves, test voltage versus load
Range 500 V
Range 1000 V
40...160V 170...510V
10 kΩ 30 kΩ
160.0 GΩ 640.0 GΩ
to 640.0 GΩ to 2.040 TΩ
40.0...99.9 V
0.1 V
25...5100 V
0,2% Un
± (5% R + 3 points)
88
520...1500V 1600...5100
100 kΩ
2.080 TΩ
to 6.000 TΩ to 10.00 TΩ
100...1500 V 1501...5100 V
1 V 2 V
1% L
V
300 kΩ
6.400 TΩ