Huawei SUN2000-30KTL-A User Manual page 92

SUN2000-(30KTL-A, 33KTL, 40KTL)
User Manual
Alarm Alarm
ID Name
202 Abnormal
Invert
Circuit
Issue 04 (2016-06-20)
Alarm Possible Cause
Severity
Major Abnormal external
conditions trigger the
protection for the inverter
circuit inside the inverter.
The possible causes are as
follows:
 Cause ID = 13
The power grid voltage
drops dramatically or the
power grid is
short-circuited, which
damages the internal
voltage detection circuit
in the inverter.
 Cause ID = 14
The power 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.
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8 System Maintenance
Suggestion
Cause ID = 13/14/16
1. The inverter detects its external
working conditions in real time. After
the fault is rectified, the inverter
automatically recovers.
2. If the alarm occurs repeatedly, contact
Huawei technical support.
Cause ID = 20
1. Check the inverter output cable for
short-circuits.
2. If the alarm occurs repeatedly, contact
Huawei technical support.
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