Huawei SUN2000-63KTL-JPH0 User Manual page 117

SUN2000-63KTL-JPH0
User Manual
Alarm Alarm Name
ID
2040 Output DC
Component
Overhigh
2051 Abnormal
Residual Current
2062 Low Insulation
Resistance
Issue 04 (2019-06-30)
Alarm Cause
Severity
Major Cause ID = 1
The DC component of the
SUN2000 output current
exceeds the specified upper
threshold.
Major Cause ID = 1
The insulation impedance of
the input side to PE decreases
when the SUN2000 is
operating.
Major Cause ID = 1
1. The PV string is
short-circuited to PE.
2. The PV string has been in
a moist environment for a
long time and the power
cable is not well insulated
to ground.
Copyright © Huawei Technologies Co., Ltd.
8 Maintenance
Measures
1. If the exception is caused
by an external fault, the
SUN2000 automatically
recovers after the fault is
rectified.
2. If the alarm occurs
frequently and affects the
power production of the
PV plant, contact
Huawei technical
support.
1. If the alarm occurs
accidentally, the external
power cable may be
abnormal temporarily.
The SUN2000
automatically recovers
after the fault is rectified.
2. If the alarm occurs
frequently or persists,
check that the impedance
between the PV string
and ground is not below
the lower threshold.
1. Check the impedance
between the PV string
and the PE cable. If a
short circuit occurs,
rectify the fault.
2. Check that the PE cable
for the SUN2000 is
correctly connected.
3. If you are sure that the
impedance is less than
the default value in a
cloudy or rainy
environment, reset
Insulation resistance
protection.
110