Huawei SUN2000-63KTL-JPH0 User Manual page 100

SUN2000-63KTL-JPH0
User Manual
Alarm Alarm Name
ID
2039 Output
Overcurrent
2040 Output DC
Component
Overhigh
2051 Abnormal
Residual Current
2062 Low Insulation
Resistance
Issue 06 (2020-02-18)
Alarm Cause
Severity
Major Cause ID = 1
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.
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
Copyright © Huawei Technologies Co., Ltd.
8 Maintenance
Measures
whether the grid
frequency is within the
acceptable range. If no,
contact the local power
operator.
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
frequently and affects the
power production of the
PV plant, check whether
the output is
short-circuited. If the
fault persists, contact
Huawei technical
support.
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
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