Huawei SUN2000-4.95KTL-JPL1 - Page 84

Alarm
ID
Alarm Name Alarm
Severity
Possible Causes Troubleshooting
2035 Grid Voltage
Imbalance
Major Cause ID = 1
The dierence between
grid phase voltages exceeds
the upper threshold.
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 persists,
check whether the
power grid voltage is
within the acceptable
range. If not, contact the
local power operator.
3. If the alarm lasts for a
long time, check the AC
output power cable
connection.
4. If the AC output power
cable is correctly
connected, yet the alarm
persists and
aects the
energy yield of the PV
plant, contact the local
power operator.
2036
Grid
Overfrequency
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
SUN2000 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
allowed range. If not,
contact the local power
operator. If yes, modify
the grid overfrequency
protection threshold
through the mobile app,
SmartLogger, or NMS
with the consent of the
local power operator.
SUN2000-4.95KTL-JPL1
User Manual 8 Maintenance
Issue 05 (2023-02-17) Copyright © Huawei Technologies Co., Ltd. 78