Huawei SUN2000-33KTL-JP User Manual page 118

SUN2000-(33KTL, 40KTL)-JP
User Manual
Ala Alarm Alarm
rm Name Severit
ID y
301 Abnorma Major
l Grid
Voltage
Issue 07 (2019-06-30)
Possible Cause
dramatically or the power
grid is short-circuited,
which damages the internal
voltage detection circuit in
the SUN2000.
 Cause ID = 14
The grid voltage drops
dramatically or the power
grid is short-circuited. As a
result, the inverter transient
output current exceeds the
upper threshold and
therefore the inverter
protection is triggered.

Cause ID = 16
The DC current in the
power grid exceeds the
upper threshold.

Cause ID = 20
The inverter output is
short-circuited. As a result,
the output current surges to
a value above the upper
limit, and the inverter
protection is triggered.
The grid voltage is beyond the
acceptable range. The possible
causes are as follows:

Cause ID = 4
The grid voltage is below
the specified lower
threshold.

Cause ID = 16
The grid voltage exceeds
the specified upper
threshold.

Cause ID = 19
The grid voltage has
exceeded the specified
upper threshold for 10
minutes.

Cause ID = 26
The grid voltage exceeds
the specified upper
threshold.
Copyright © Huawei Technologies Co., Ltd.
Suggestion
Cause ID = 20
1. Check the inverter output cable for
short-circuits.
2. If the alarm occurs repeatedly, contact
Huawei technical support.
Cause ID = 4
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 voltage is within the
acceptable range. If no, contact the local
power operator. If yes, log in to the
SUN2000 app, SmartLogger, or NMS to
modify the grid overvoltage and
undervoltage protection thresholds with
the consent of the local power operator.
3. If the fault persists for a long time, check
the AC switch and AC output power cable.
Cause ID = 16/19/26
1. Check whether the grid-tied voltage
exceeds the upper threshold. If yes, contact
the local power operator.
2. If you have confirmed that the grid-tied
voltage exceeds the upper threshold and
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