Powering Off The Distribution Transformer - Huawei LUNA2000-2.0MWH Series User Manual

LUNA2000-2.0MWH Series Smart String ESS
User Manual
Step 2 Switch off DC output circuit breakers of the ESS.
Step 3 Switch off all circuit breakers of the ESS power distribution system.
1.
2.
3.
4.
5.
6.
Step 4 Switch off circuit breaker 1QA (corresponding to number 6 in
switches) for the AC input power cable of the ESS.
Step 5 Switch off circuit breaker 2FCB1 (corresponding to number 5 in
switches) of the SPD.
Step 6 (Optional) Switch on UPS circuit breaker 5FCB (corresponding to number 8 in
figure of
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9.6 Powering Off the Distribution Transformer

Follow the relevant power operation procedure. Wear high-voltage insulation
gloves, insulation shoes, and safety helmets, and use operation levers.
Procedure
Step 1 Turn off the auxiliary circuit switch MCB 6FB9 in the auxiliary transformer cabinet.
Step 2 Turn off the meter switch MCB 6FB8 in the auxiliary transformer cabinet.
Step 3 Turn off the incoming power switch MCCB 6QA on the 800 V side of the auxiliary
transformer cabinet.
Step 4 Turn off the SPD switch MCB 6FB7 on the 400 V side of the auxiliary transformer
cabinet.
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Issue 08 (2022-11-15)
Switch off the AC power circuit breakers of the air conditioner in sequence.
(corresponding to number 1 in
Switch off the extinguishant control panel circuit breaker 5FCB3, Open the
extinguishant control panel and turn off the power switch inside, Switch off
lighting system circuit breaker 1FB1, (optional) 220 V socket circuit breaker
1FB2, and ESS adapter circuit breaker 5FCB1 in sequence. (corresponding to
number 2 in the figure of
Switch off the circuit breakers of the battery pack fan in sequence.
(corresponding to number 4 in
Switch off the circuit breakers of the Smart Rack Controller. (corresponding to
number 4 in the figure of
On the subrack, the DC input circuit breakers 7FCB1 and (optional) 7FCB2, the
exhaust fan controller circuit breakers 7FCB4 and 7FCB5, and the air
conditioner circuit breaker 7FCB6 of the control unit cabin in sequence.
(corresponding to number 3 in
Switch off the PSU AC input circuit breaker 6FCB1.
switches).
CA UTION
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9 Powering Off the System
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