Huawei SUN2000-M0 Series User Manual page 69

SUN2000-(5KTL, 6KTL)-M0
User Manual
Alarm ID Alarm
Name
2035 Unbalance
d Grid
Voltage
2036 Grid
Overfrequ
ency
2037 Grid
Underfreq
uency
Issue 03 (2019-07-19)
Alarm Possible Cause
Severity
Major Cause ID = 1
The difference between grid
phase voltages exceeds the
upper threshold.
Major Cause ID = 1
Power grid exception: The
actual power grid frequency is
higher than the standard
requirement for the local
power grid.
Major Cause ID = 1
Power grid exception: The
actual power grid frequency is
lower than the standard
requirement for the local
power grid.
Copyright © Huawei Technologies Co., Ltd.
Troubleshooting Suggestion
1. If the alarm occurs occasionally,
the power grid may be abnormal
temporarily. The SUN2000
automatically recovers after
detecting that the power grid
becomes normal.
2. If the alarm occurs frequently,
check whether the grid voltage is
within the acceptable range. If
no, contact the local power
operator.
3. If the fault persists for a long
time, check the connection
between the AC switch and the
output power cable.
1. If the alarm occurs occasionally,
the power grid may be abnormal
temporarily. The SUN2000
automatically recovers after
detecting that the power grid
becomes normal.
2. If the alarm occurs frequently,
check whether the grid
frequency is within the
acceptable range. If no, contact
the local power operator. If yes,
log in to the mobile phone app,
SmartLogger, or NMS to modify
the grid overfrequency
protection threshold with the
consent of the local power
operator.
1. If the alarm occurs occasionally,
the power grid may be abnormal
temporarily. The SUN2000
automatically recovers after
detecting that the power grid
becomes normal.
2. If the alarm occurs frequently,
check whether the grid
frequency is within the
acceptable range. If no, contact
the local power operator. If yes,
log in to the mobile phone app,
SmartLogger, or NMS to modify
the grid underfrequency
protection threshold with the
consent of the local power
operator.
7 Maintenance
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