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JUPITER-(3000K, 6000K, 9000K)-H1 Smart
Transformer Station
User Manual
Alar
Alarm
m ID
Name
2387
PSU Faulty
2388
PSU
Protection
Triggered
Issue 02 (2023-09-30)
Alarm
Possible Cause
Severity
Major
Cause ID = 1
The PSU in low-
voltage cabinet A is
faulty.
Cause ID = 2
The PSU in low-
voltage cabinet B is
faulty.
Cause ID = 3
The PSU in the
medium-voltage room
is faulty.
Minor
Cause ID = 1
PSU protection is
triggered in low-
voltage cabinet A.
Cause ID = 2
PSU protection is
triggered in low-
voltage cabinet B.
Cause ID = 3
PSU protection is
triggered in the
medium-voltage room.
Copyright © Huawei Technologies Co., Ltd.
6 System Maintenance
Suggestion
1. Replace the PSU.
2. If the fault persists, contact your
dealer or technical support.
1. Use a multimeter to check
whether input or output overvoltage
occurs on the PSU. If yes, rectify the
fault and power on the PSU again.
2. Check whether the ambient
temperature near the PSU is too
high. If yes, lower the temperature.
3. Check whether the ambient
temperature near the PSU is too low.
If yes, power on the PSU again after
the ambient temperature becomes
normal.
4. Check whether any CAN buses
between PSUs are loose. If yes,
secure the loose CAN buses.
5. If the fault persists, contact the
vendor or technical support.
146
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