Huawei SUN2000 Series User Manual page 69

SUN2000-(12KTL-25KTL)-M5 Series
User Manual
Alarm Alarm
ID Name
2061 Abnorma
l
groundin
g
2062 Low
insulation
resistance
2063 Cabinet
overtemp
erature
Issue 01 (2022-06-15)
Alarm Possible Causes
Severity
Major Cause ID = 1
● The neutral wire
or PE cable of
the inverter is
not connected.
● The output
mode set for the
inverter is
inconsistent with
the cable
connection
mode.
Major Cause ID = 1
● The PV array is
short-circuited
with PE.
● 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
● The inverter is
installed in a
place with poor
ventilation.
● The ambient
temperature
exceeds the
upper threshold.
● The inverter is
not operating
properly.
Copyright © Huawei Digital Power Technologies Co., Ltd.
Troubleshooting
Power off the inverter (turn off the AC
output switch and DC input switch, and
wait for a period of time. For details
about the wait time, see the description
on the device safety warning label), and
then perform the following operations:
1. Check whether the PE cable for the
inverter is connected properly.
2. If the inverter is connected to a TN
power grid, check whether the
neutral wire is properly connected
and whether the voltage of the
neutral wire to ground is normal.
3. After the inverter is powered on,
check whether the output mode set
for the inverter is consistent with the
output cable connection mode.
1. Check the impedance between the PV
string and the PE cable. If a short
circuit occurs, rectify the fault.
2. Check whether the PE cable of the
inverter is correctly connected.
3. If you have confirmed that the
impedance is lower than the specified
protection threshold in a cloudy or
rainy environment, log in to the app,
SmartLogger, or NMS and set
Insulation resistance protection
threshold.
1. Check the ventilation and ambient
temperature at the inverter
installation position.
2. If the ventilation is poor or the
ambient temperature exceeds the
upper threshold, improve the
ventilation and heat dissipation.
3. If both the ventilation and ambient
temperature meet requirements yet
the alarm persists, contact your
dealer or Huawei technical support.
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