Huawei UPS2000-G-6KRTLL Quick Manual page 14

Alarm Alarm Severity
ID Name
07 Overloa Critical
d
08 High Critical
bus
voltage
09 Bus Critical
short-
circuit
10 EPO Critical
triggere
d
12 Manual Minor
bypass
activate
d
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Clearance
Condition
You need to
manually
rectify the
fault or
power off
and restart
the device.
When the
bus voltage
is lower
than 360 V,
the alarm
can be
automatical
ly cleared
for two
times. After
that, you
need to
manually
clear the
fault or
power off
and restart
the device.
You need to
manually
rectify the
fault or
power off
and restart
the device.
The EPO
open-circuit
status
needs to be
restored
and the
alarm
needs to be
manually
cleared.
The open-
circuit
status of
the manual
bypass is
restored.
Trigger Impact on
Condition the System
The output The system
overload disconnects
time the power
exceeds output.
the
specificatio
n.
The bus The system
voltage is shuts down
greater the inverter
than 450 V and transfers
for 200 ms to bypass
or greater mode.
than 470 V
for 1 ms.
The bus The system
soft-start cannot start
time inverter
exceeds output and
15s. transfers to
bypass mode.
The EPO The system
port is switches off
short- the output
circuited. and enters
the fault
mode.
The The system
manual transfers to
bypass port bypass mode.
is short-
circuited.
14
Suggestion
Possible cause: The
load exceeds the UPS
capacity.
Measure: Reduce the
load.
•Possible cause: Power
grid surge occurs.
Measure: Improve the
power grid quality.
•Possible cause: The
parallel cable is
disconnected when
UPSs are connected in
parallel.
Measure: Check that
the parallel cable and
current equalization
cable are properly
connected.
•Possible cause: The
circuit is faulty.
Measure: Send the
device to the
maintenance center.
Possible cause: The
circuit is faulty.
Measure: Send the
device to the
maintenance center.
Check and restore the
EPO port status.
Restore the open-
circuit status of the
manual bypass port.