Huawei SUN2000-30KTL-US User Manual page 111

SUN2000-(25KTL, 30KTL)-US
User Manual
Alarm ID Alarm
Name
202 Invert
Module
Fault
301 Grid
Voltage
Abnormal
Issue 09 (2019-06-30)
Alarm Causes
Severity
imbalance.

Cause ID = 11
The input energy of the
SUN2000 cannot be vented
quickly due to the sharp
change of grid voltage. As a
result, the internal voltage
increases.
 Cause ID = 12/15
An unrecoverable fault
occurs on a circuit inside
the inverter.
Major Abnormal external conditions
cause the protection for the
inversion circuit inside the
SUN2000. The possible causes
are as follows:
 Cause ID = 13
The grid voltage sharply
drops or short-circuits,
resulting in a fault in the
voltage check circuit of the
SUN2000.
 Cause ID = 14
The grid voltage sharply
drops or short-circuits,
resulting in instantaneous
high output current of the
SUN2000.

Cause ID = 16
The DC current of grid
current exceeds the
allowable range.
 Cause ID = 20
The SUN2000 output
short-circuit leads to a sharp
increase in output current.
Major The grid voltage is beyond the
acceptable range. The possible
causes are as follows:

Cause ID = 4
The power grid voltage is
below the specified lower
threshold.

Cause ID = 16
Copyright © Huawei Technologies Co., Ltd.
Measures
Turn off the AC output switch
and DC input switch, and then
turn them on after 5 minutes. If
the fault persists, contact Huawei
technical support.
Cause ID = 13/14/16
1. The SUN2000 monitors its
external working conditions in
real time and automatically
recovers to the normal operating
status after the fault is rectified.
2. If the alarm persists, contact
Huawei technical support.
Cause ID = 20
1. Check whether the SUN2000
output cables are short-circuited.
Rectify any fault.
2. If the alarm persists, contact
Huawei technical support.
Cause ID = 4
1. If the alarm occurs accidentally,
possibly the power grid is
abnormal accidentally. The
SUN2000 automatically recovers
to the normal operating status
after the fault is rectified.
2. If the alarm occurs frequently,
check whether the power grid
8 Maintenance
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