Huawei SUN2000-33KTL User Manual page 83

SUN2000-(33KTL, 40KTL)
User Manual
Alarm ID Alarm
Name
200 DC Bus
Voltage
Fault
Issue 03 (2015-12-01)
Alarm Causes
Severity
Major Abnormal external conditions
have triggered the protection
for the DC circuits inside the
SUN2000. The possible causes
are as follows:
 Reason ID = 3
The SUN2000 input is
suddenly disconnected, or
the PV strings shielded
result in a sharp change in
output power.
 Reason ID = 9 or 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.
 Reason ID = 10
The internal control circuit
of the SUN2000 has failed
to keep pace with changes
due to grid phase
imbalance.
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8 Maintenance
Measures
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 occurs repeatedly,
contact Huawei technical
support.
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