3BHS135824 ZAB E01Rev. D 37 (of 62)
10 Disconnect and isolate terminals 4, 7, 10, 20, 22 of MR 627 –A6041
11 Short circuit and ground terminals X2_11 and X2_12 of board –
A6051
The water conductivity must be lower than 0.5 µS during the
measurement.
Measurement is carried out with 1 kV DC voltage and a measurement
time is 60 sec.
The plus terminal is connected to the combined circuit of output and
three input terminals. The minus terminal is connected to the ground
potential.
The value of insulation resistance must higher than 1 MΩ.
In the commissioning record, write down the measured insulation
value and the value of the water conductivity present at the time of
measurement.
Note: Remove all short circuit connections and restore the original
state, when finished.
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