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JUPITER-(3000K, 6000K, 9000K)-H1 Smart
Transformer Station
User Manual
Alar
Alarm
m ID
Name
2356
Transforme
r High Oil
Temperatur
e–induced
Tripping
2357
Transforme
r Medium-
Voltage
Switch
Control
Loop
Disconnecti
on
Issue 02 (2023-09-30)
Alarm
Possible Cause
Severity
Major
1. The transformer is
overloaded.
2. A false alarm is
generated due to
the secondary loop.
3. The oil surface
thermometer is
faulty.
Major
1. The VCB control
loop is open-
circuited.
2. The handle of the
ring main unit is
not pulled out.
3. The door panel of
the cable room of
the ring main unit
is not properly
mounted.
4. A switch-on action
is taken for high-
configuration relay
protection.
Copyright © Huawei Technologies Co., Ltd.
6 System Maintenance
Suggestion
1. Check whether the transformer is
overloaded. If yes, the high oil
temperature–induced tripping
occurs in some scenarios.
2. Check whether the circuit breaker
trips in error based on the cable
connection of the secondary loop.
3. Check whether the temperature
on the monitoring device is
consistent with that on the oil
surface thermometer. If no, rectify
the fault on the oil surface
thermometer.
4. If the fault persists, contact your
dealer or technical support.
1. Check whether the switch-on,
switch-off, and trip coils of the
circuit breaker are damaged. If
yes, replace the coils.
2. Pull out the handle and ensure
that the travel switch is reset.
3. Mount the door panel of the cable
room and ensure that the travel
switch is in the correct position.
4. Reset the relay protection.
5. If the fault persists, contact your
dealer or technical support.
136
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