Huawei SUN2000 Series User Manual page 100

SUN2000-(196KTL-H3, 200KTL-H3, 215KTL-H3)
Seires
User Manual
Alarm Alarm Name
ID
2051 Abnormal
Residual Current
2062 Low Insulation
Resistance
2063 Cabinet
Overtemperatur
e
2064 Device Fault
Issue 03 (2021-09-30)
Alarm Cause
Severity
Major Cause ID=1
The insulation impedance
of the input side to PE
decreases when the
inverter is operating.
Major Cause ID=1
1. The PV string is short-
circuited to the PE
cable.
2. The PV string has been
in a moist environment
for a long time and the
circuit is not well
insulated to ground.
Minor Cause ID=1
1. The inverter is installed
in a place with poor
ventilation.
2. The ambient
temperature is too
high.
3. The inverter is not
working properly.
Major Cause ID=1-5, 7-12
An unrecoverable fault
has occurred on a circuit
inside the inverter.
Copyright © Huawei Technologies Co., Ltd.
8 Maintenance
Troubleshooting Suggestions
1. If the alarm occurs
occasionally, the external
circuit may be abnormal
temporarily. The inverter
automatically recovers
after the fault is rectified.
2. If the alarm occurs
frequently or persists, check
whether the impedance
between the PV string and
the ground is too low.
1. Check the impedance of
the PV string to PE. If a
short circuit occurs, rectify
it.
2. Check that the ground
cable of the inverter is
correctly connected.
3. If you are sure that the
impedance is less than the
preset value in a cloudy or
rainy environment, reset
Insulation resistance
protection.
1. Check the ventilation and
whether the ambient
temperature of the inverter
exceeds the upper limit. If
the ventilation is poor or
the ambient temperature is
too high, improve
ventilation.
2. If both the ventilation and
ambient temperature meet
requirements yet the fault
persists, contact your
dealer or Huawei technical
support.
Turn off the AC output switch
and DC input switch, and then
turn them on after 5 minutes.
If the fault persists, contact
your dealer or Huawei
technical support.
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