Huawei SUN2000-50KTL-M0 User Manual page 108

SUN2000-(50KTL, 60KTL, 65KTL)-M0
User Manual
Alarm Alarm Alarm
ID Name Severity
2040 Output Major
DC
Compo
nent
Overhi
gh
2051 Abnor Major
mal
Residua
l
Current
2061 Abnor Major
mal
Ground
ing
2062 Low Major
Insulati
on
Resista
nce
Issue 06 (2020-07-07)
Cause
Cause ID = 1
The DC component of the
SUN2000 output current exceeds
the specified upper threshold.
Cause ID = 1
The insulation impedance of the
input side to PE decreases when
the SUN2000 is operating.
Cause ID = 1
1. The PE cable for the SUN2000
is not connected.
2. The SUN2000 output side does
not connect to an isolation
transformer when the PV string
output is grounded.
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 that the PE cable for
the SUN2000 is connected
properly.
2. If the PV string output is
grounded, check that the
SUN2000 output side
connects to an isolation
transformer.
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.
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