Huawei LUNA2000-200KWH-2H1 User Manual page 182

LUNA2000-200KWH-2H1 Smart String ESS
User Manual
Alar Alarm
m ID Name
3021 Insulation
Resistanc
e of Rack
Controller
Abnormal
Issue 03 (2023-03-30)
Severit Possible Cause
y
Major Cause ID = 1–3
1. The battery is short-
circuited to the
ground.
2. The battery is in a
humid environment
and the insulation
between the battery
and ground is poor.
Copyright © Huawei Digital Power Technologies Co., Ltd.
Suggestion
1. Locate the input and output circuit
breakers associated with [ESC-No].
2. Issue a hibernation command to the
ESR corresponding to the ESC, and
turn off the switch on the battery
side and the switch on the bus side in
sequence, and wait for 5 minutes.
3. Check the ground impedance of the
battery output (measured on both
the battery side and the bus side). If
a short circuit occurs or the insulation
is insufficient, rectify the fault.
4. Check whether the PE cable of the
system is correctly connected.
5. If the impedance is lower than the
specified protection threshold on
rainy and cloudy days, set Insulation
resistance protection threshold
using the mobile app, SmartLogger,
or NMS.
6. After checking that the battery power
cable is correctly connected, turn on
the switch on the battery side and
the switch on the bus side in
sequence, and issue a running
command.
7. If the alarm persists, contact the
vendor or technical support.
13 Alarm Reference
173