Huawei Smart String ESS LUNA2000-200KWH-2H1 - Powering off ESS Devices; Powering off the Power Supply Loop of the AC Power Distribution Cabinet

LUNA2000-200KWH-2H1 Smart String ESS
User Manual
5 Closing the Cabinet Door
Issue Draft (2022-10-30)
Copyright © Huawei Technologies Co., Ltd.
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5.3 Powering Off ESS Devices
Powering Off the Smart PCS
Step 1 Wear proper PPE.
Step 2 Turn off the AC switch between the Smart PCS and the grid.
Step 3 Open the AC maintenance compartment door, install a support bar, and use a multimeter to
measure the voltage between the AC terminal block and the ground. Ensure that the AC side
of the Smart PCS is disconnected.
Step 4 Turn off DC switch 1Q2 in the ESS.
Step 5 Open the DC maintenance compartment door, install a support bar, and use a multimeter to
measure the voltage between the DC terminal blocks. Ensure that the DC side of the Smart
PCS is disconnected.
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Powering off the ESS
Step 1 Turn off all switches in the power distribution system of the ESS.
1. On the embedded power subrack (SK1), turn off the DC/DC switch 2FCB1, DC light
power switch 2FCB2, TCUE switch 2FCB3, fan 1 switch 2FCB6, fan 2 switch 2FCB7,
air conditioner 1 switch 2FCB8, and air conditioner 2 switch 2FCB9 in sequence.
2. Turn off switch 1FB1 of the 220 V maintenance socket.
3. Turn off the PSU switch 1FCB2.
4. Turn off the 12 V adapter switch 1FCB1.
Step 2 Turn off the AC main switch 1FCB.
Step 3 Turn off the DC switch 1Q1.
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5.4 Powering Off the Power Supply Loop of the AC Power
Distribution Cabinet
Step 1 Turn off the switches between the AC power distribution cabinet and the ESS.
Step 2 Turn off the switches between the AC power distribution cabinet and the SACU.
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