SUN2000-(2KTL-5KTL)-L0
User Manual
Copyright © Huawei Technologies Co., Ltd.
Cause ID = 1
The grid voltage exceeds
the higher threshold or the
high voltage duration has
lasted for more than the
value specified by HVRT.
1. Check whether the grid
connection voltage exceeds the
upper threshold. If yes, contact
the local power operator.
2. If you have confirmed that the
grid connection voltage exceeds
the upper threshold and obtained
the consent of the local power
operator, modify the overvoltage
protection thresholds.
3. Check whether the peak grid
voltage exceeds the upper
threshold.
Cause ID = 1
The difference between grid
phase voltages exceeds the
upper threshold.
1. Check that the grid voltage is
within the normal range.
2. Check the connection of the AC
output power cable.
3. 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.
Cause ID = 1
Power grid exception: The
actual grid frequency is
higher than the local power
grid standard.
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 grid
overfrequency protection
threshold with the consent of the
local power operator.
Cause ID = 1
Power grid exception: The
actual grid frequency is
lower than the local power
grid standard.
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 grid
underfrequency protection
threshold with the consent of the
local power operator.
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