Huawei SUN2000-23KTL - Page 116

SUN2000 (8KTL-28KTL)
User Manual
8 Maintenance
Issue 07 (2014-07-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
110
Alarm
ID
Alarm
Name
Alarm
Severit
y
Causes
Measures
200
DC Bus
Voltage
Fault
Major
Abnormal external
conditions trigger the
protection for the DC
circuit inside the
SUN2000. The possible
causes are as follows:

Reason ID = 3
The inverter input is
suddenly
disconnected, or the
PV array to be
obstructed result in a
sharp change in
output power.

Reason ID = 9 or 11
The sharp change of
grid voltage cause
inverter input energy
short period of time
can not be vented so
that the internal
voltage increases.

Reason ID = 10
The imbalance of
grid phase voltage
lead to the inverter
internal control
circuit short keep up
with changes and
protection.
1. The SUN2000 detects its
external working
conditions in real time,
and therefore the
SUN2000 automatically
recovers to the normal
operating status after the
fault is rectified.
2. If the alarm occurs
repeatedly, contact
Huawei technical support.