Huawei UPS2000-G-6KRTLL - Page 14

14
Alarm
ID
Alarm
Name
Severity
Clearance
Condition
Trigger
Condition
Impact on
the System
Suggestion
07
Overloa
d
Critical
You need to
manually
rectify the
fault or
power off
and restart
the device.
The output
overload
time
exceeds
the
specificatio
n.
The system
disconnects
the power
output.
Possible cause: The
load exceeds the UPS
capacity.
Measure: Reduce the
load.
08
High
bus
voltage
Critical
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.
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
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.
09
Bus
short
-
circuit
Critical
You need to
manually
rectify the
fault or
power off
and restart
the device.
The bus
soft
-start
time
exceeds
15s.
The system
cannot start
inverter
output and
transfers to
bypass mode.
Possible cause: The
circuit is faulty.
Measure: Send the
device to the
maintenance center.
10
EPO
triggere
d
Critical
The EPO
open
-
circuit
status
needs to be
restored
and the
alarm
needs to be
manually
cleared.
The EPO
port is
short
-
circuited.
The system
switches off
the output
and enters
the fault
mode.
Check and restore the
EPO port status.
12
Manual
bypass
activate
d
Minor
The open
-
circuit
status of
the manual
bypass is
restored.
The
manual
bypass port
is short
-
circuited.
The system
transfers to
bypass mode.
Restore the open
-
circuit status of the
manual bypass port.
All manuals and user guides at all-guides.com