Huawei SUN 2000 Series User Manual page 54

SUN2000-4.95KTL-JPL0
User Manual
Alarm ID Alarm
Name
2035 Grid Volt.
Imbalance
Grid
2036
Overfrequ
ency
Issue 03 (2020-06-03)
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 power grid frequency is
higher than the standard
requirement for the local
power grid.
Copyright © Huawei Technologies Co., Ltd.
7 System Maintenance
Suggestions
1. If the alarm occurs accidentally,
the power grid may be abnormal
temporarily. The inverter
automatically recovers after
detecting that the power grid
becomes normal.
2. If the alarm occurs frequently,
check whether the power 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 of the
AC output power cables.
4. If the AC output power cables are
correctly connected, but the alarm
persists and affects the energy
yield of the PV plant, contact the
local power operator.
1. If the alarm occurs occasionally,
the power grid may be abnormal
temporarily. The solar inverter
automatically recovers after
detecting that the power grid
becomes normal.
2. If the alarm occurs frequently,
check whether the power grid
frequency is within the
acceptable range. If no, contact
the local power operator. If yes,
log in to the SmartLogger, or
NMS to modify the power grid
overfrequency protection
threshold with the consent of the
local power operator.
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