SUN2000-4.95KTL-JPL0
User Manual
7 System Maintenance
Issue 03 (2020-06-03)
Copyright © Huawei Technologies Co., Ltd.
48
Alarm ID Alarm
Name
Alarm
Severity
Cause
Suggestions
2035
Grid Volt.
Imbalance
Major
Cause ID = 1
The difference between grid
phase voltages exceeds the
upper threshold.
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.
2036
Grid
Overfrequ
ency
Major
Cause ID = 1
Power grid exception: The
actual power grid frequency is
higher than the standard
requirement for the local
power grid.
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.
