The Dar And Pi Diagnostic (Mi 3152H Only) - METREL EurotestXC MI 3152 Instruction Manual

MI 3152(H) EurotestXC (2,5 kV)

The DAR and PI diagnostic (MI 3152H only)

7.3
DAR (Dielectric Absorption Ration) is ratio of insulation resistance values measured after 15
seconds and after 1 minute. The DC test voltage is present during the whole period of the
measurement.
PI (Polarization Index) is the ratio of insulation resistance values measured after 1 minute and
after 10 minutes. The DC test voltage is present during the whole period of the measurement
For additional information regarding PI and DAR diagnostic, please refer to Metrel's handbook
Modern insulation testing.
Measurement parameters / limits
Uiso Nominal test voltage [500 V, 1000 V, 2500 V]
Connection diagrams
Figure 7.11: Connection of 3-wire test lead and Tip commander (U
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Figure 7.10: Diagnostic test menu
95
Tests and measurements
( 15 s )
≤ 1 kV)
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