Huawei SUN2000-29.9KTL - Page 96

SUN2000-(29.9KTL, 33KTL-A, 36KTL, 42KTL)
User Manual
8 Maintenance
Issue 11 (2019-06-08)
Copyright © Huawei Technologies Co., Ltd.
89
Alarm ID
Alarm
Name
Alarm
Severity
Possible Cause
Suggestion
202
Abnormal
Invert
Circuit
Major
Abnormal external conditions
trigger the protection for the
inverter circuit inside the
SUN2000. The possible causes
are as follows:

Cause ID = 13
The grid voltage drops
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.
Cause ID = 13/14/16
1. The inverter detects its external
working conditions in real time.
After the fault is rectified, the
SUN2000 automatically recovers.
2. If the alarm persists, contact
Huawei technical support.
Cause ID = 20
1. Check the inverter output cable
for short-circuits.
2. If the alarm persists, contact
Huawei technical support.