Power-On Commissioning; Insulation Test - Huawei New Main Way 2.0 User Manual

New Main Way 2.0
User Manual
Prerequisites
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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.
Issue 05 (2020-10-15)
4
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).
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Power-On Commissioning

4 Power-On Commissioning
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