4
Power-On Commissioning
Prerequisites
●
Use a multimeter to check that there is no short circuit in the input and
output of power supply and distribution devices.
●
Use a multimeter to measure the phase voltage and frequency on the
customer input side. Ensure that the voltage ranges from 176 V to 280 V, and
the frequency ranges from 47 Hz to 53 Hz (in the 50 Hz scenario) or 57 Hz to
63 Hz (in the 60 Hz scenario).
4.1 Insulation Test
Procedure
Step 1 Check that the NMW has passed all check items of installation verification.
Step 2 Check that the upstream input and downstream output switches of the NMW are
OFF.
Step 3 Remove the input protective cover.
Figure 4-1 Removing the input protective cover
Step 4 Disconnect the terminals.
New Main Way 2.0
User Manual
4 Power-On Commissioning
Issue 05 (2020-10-15)
Copyright © Huawei Technologies Co., Ltd.
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