Huawei SUN2000-330KTL-H1 User Manual page 82

SUN2000-(330KTL-H1, 330KTL-H2)
User Manual
Alar Alarm
m ID Name
2051 Abnorm
al
Residual
Current
2062 Low
Insulatio
n
Resistan
ce
2063 Overtem
perature
2064 Device
Fault
2065 Upgrade
Failed or
Version
Mismatc
h
Issue Draft A
(2022-08-30)
Alarm Possible Cause
Severity
Major Cause ID = 1
The ground insulation
resistance decreases during
device operation.
Major Cause ID = 1
● A short circuit occurs
between the PV array
and the ground.
● The ambient air of the
PV array is damp and
the insulation between
the PV array and the
ground is poor.
Minor Cause ID = 1
● The device is installed in
a place with poor
ventilation.
● The ambient
temperature is higher
than the upper
threshold.
● The device is faulty.
Major Cause ID = 1–12, 20
A major fault has occurred
on a circuit inside the
device.
Minor Cause ID = 1–4, 7
The upgrade ends
abnormally.
Copyright © Huawei Technologies Co., Ltd.
Suggestion
1. If the alarm occurs occasionally,
the external circuit may be
abnormal temporarily. The device
will automatically recover after the
fault is rectified.
2. If the alarm occurs frequently or
persists, check whether the DC-to-
ground impedance is too low.
1. Set Insulation resistance
protection to the minimum value
and restart the inverter.
2. Check that the PE cable of the
device is correctly connected.
3. Check the output impedance of
the PV array to ground. If there is
a short circuit or lack of insulation,
rectify it.
1. Check the ventilation and ambient
temperature of the device
installation position.
2. If the ventilation is poor or the
ambient temperature exceeds the
upper threshold, improve the
ventilation and heat dissipation.
3. If the ventilation and ambient
temperature meet requirements,
contact your dealer or technical
support.
Cause ID = 1–12
Turn off the AC and DC switches, wait
for 5 minutes, and then turn on the
AC and DC switches. If the fault
persists, contact your dealer or
technical support.
Cause ID = 20
Do not turn off the AC output switch
or DC input switch. Contact your
dealer or technical support.
1. Perform an upgrade again.
2. If the upgrade fails for multiple
times, contact your dealer or
technical support.
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