Huawei UPS2000-G-6KRTLL - Page 74

Alarm ID Alarm
Name
Severity Clearance
Condition
Trigger
Condition
Impact on
the System
Suggestion
08 High bus
voltage
Critical When the
bus voltage
is lower
than 360 V,
the alarm
can be
automatical
ly cleared
twice. After
that, you
need to
manually
clear the
fault or
power
o
and restart
the device.
The bus
voltage is
greater
than 450 V
for 200 ms
or greater
than 470 V
for 1 ms.
The system
shuts down
the inverter
and
transfers to
bypass
mode.
● Possible
cause:
Power
grid
surge
occurs.
Measure:
Improve the
power grid
quality.
● Possible
cause:
The
parallel
cable is
disconne
cted
when
UPSs are
connecte
d in
parallel.
Measure:
Check that
the parallel
cable and
current
equalizatio
n cable are
properly
connected.
● Possible
cause:
The
circuit is
faulty.
Measure:
Send the
device to
the
maintenanc
e center.
UPS2000-G-6KRTLL
User Manual 4 Control Panel
Issue 02 (2022-06-30) Copyright © Huawei Technologies Co., Ltd. 68