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JUPITER-(3000K, 6000K, 9000K)-H1 Smart
Transformer Station
User Manual
Alar
Alarm
m ID
Name
2338
Relay
Protection
Communica
tion Error
in Medium-
Voltage
Room
2339
Transforme
r
Differential
Protection
Action
2340
Transforme
r Non-
electrical
Protection
Action
Issue 02 (2023-09-30)
Alarm
Possible Cause
Severity
Minor
1. The
communications
cable between the
relay protection
and the main
controller is
disconnected.
2. The port terminal is
in poor contact.
Major
1. An internal fault
occurred on the
transformer.
2. The cable between
the transformer
and the ring main
unit is faulty.
3. The copper bar
between the
transformer and
the low-voltage
cabinet is faulty.
Major
The transformer trips
due to heavy gas,
overtemperature, or
pressure relief valve
action.
Copyright © Huawei Technologies Co., Ltd.
6 System Maintenance
Suggestion
1. Check whether the
communications cable is
damaged. If yes, replace the cable.
2. Check whether the terminal is
secured. If no, secure the terminal.
3. If the fault persists, contact your
dealer or technical support.
1. Check and download the relay
protection event records of the
ring main unit onsite, locate the
internal fault point of the
transformer, and rectify the fault.
2. Check and download the relay
protection event records of the
ring main unit onsite, locate the
fault point of the cable between
the transformer and the ring main
unit, and rectify the fault.
3. Check and download the relay
protection event records of the
ring main unit onsite, locate the
fault point of the copper bar
between the transformer and the
low-voltage cabinet, and rectify
the fault.
4. Rectify the fault before switching
on the medium-voltage circuit
breaker.
5. If the fault persists, contact your
dealer or technical support.
1. Check whether the transformer is
faulty. If yes, repair the
transformer or reduce the
transformer load. Rectify the fault
before switching on the medium-
voltage circuit breaker.
2. If the fault persists, contact your
dealer or technical support.
128
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