Huawei LUNA2000-2.0MWH Series User Manual page 234

LUNA2000-2.0MWH Series Smart String ESS
User Manual
No.
2
Note: If the result of the first test does not meet the requirements, perform the
test again following the prerequisites. If the test result still fails to meet the
requirements, contact the Company's service engineers immediately.
Follow-up Procedure
Remove the short-circuit cable and restore all switches to factory settings.
Issue 08 (2022-11-15)
Test Item Procedure
Main ground 1. Short-circuit L1, L2, L3, and
insulation N.
resistance
2. Select the insulation
after L1, L2,
resistance test function for
L3, and N
the tester. Connect one
are short-
end of the tester to the
circuited
short-circuit point of the
phase wire and the other
end to the main ground
point. Set the test voltage
to 1 kV DC and record the
test resistance.
Copyright © Huawei Technologies Co., Ltd.
11 FAQ
Criteria
● The test voltage is 1
kV.
● The stable insulation
resistance is greater
than or equal to 1
MΩ.
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