7.3 Alarm Reference
For details about alarms, see the SmartGuard Alarm Reference.
7.4 Operations on the Bypass Switch of the
SmartGuard
Precautions
● Do not operate the bypass switch during site deployment or normal use.
● When the grid is available but the SmartGuard is abnormal and cannot supply
power to loads, check and clear the SmartGuard alarm. If the fault persists,
consult the customer service personnel and then operate the bypass switch.
Misoperations may cause electric shocks.
● Before operating the bypass switch, power o the SmartGuard.
● Before opening the maintenance compartment door, turn o the main circuit
breaker on the grid side, and then turn o the switches for residential backup
loads and non-backup loads. Shut down the inverter, and turn o the DC
switches of the inverter and ESS.
● Only authorized personnel can open the maintenance compartment cover to
perform electrical connections.
● After the SmartGuard powers o, the remaining electricity and heat may still
cause electric shocks and burns. Therefore, wait for at least 5 minutes and wear
insulated gloves before working on the SmartGuard.
Procedure
Step 1 Check that the grid is available and the SmartGuard is abnormal and cannot
supply power to loads.
Step 2 Power o the system. For details, see 7.1 System Power-O.
Step 3 Perform operations on the SmartGuard bypass switch.
1. Open the maintenance compartment door and turn o the four switches
shown in the gure.
SmartGuard-63A-(S0, AUS0)
User Manual 7 System Maintenance
Issue 03 (2023-12-27) Copyright © Huawei Digital Power Technologies Co., Ltd. 70
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