Huawei SUN2000-63KTL-JPH0 User Manual page 115

SUN2000-63KTL-JPH0
User Manual
Alarm Alarm Name
ID
2035 Grid Voltage
Imbalance
2036 Grid
Overfrequency
Issue 04 (2019-06-30)
Alarm 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 grid frequency is higher
than the requirement of the
local power grid standard.
Copyright © Huawei Technologies Co., Ltd.
8 Maintenance
Measures
1. Check that the grid
voltage is within the
normal range.
2. Check the connection of
the AC output power
cable. If the cable
connection is proper but
the alarm occurs
frequently and affects the
power production of the
PV plant, contact the
local power operator.
1. If the alarm occurs
accidentally, 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, modify
the power grid
overfrequency protection
threshold with the
consent of the local
power operator.
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