Huawei UPS5000-E-400K-SM User Manual page 285

UPS5000-E-(350 kVA-800 kVA)
User Manual (50 kVA Power Modules)
Case
is not
normal.
The
inverter
is not
normal.
The
charger
generate
s an
alarm.
The
UPS
works
in
bypass
mode
and
does not
transfer
to
inverter
mode.
The
bypass
is not
normal.
Issue 05 (2018-01-08)
Symptom
voltage is not boosted.
The buzzer is activated,
the Fault indicator is on,
the inverter is faulty, and
the UPS transfers to
bypass mode.
The buzzer is activated,
the Fault indicator is on,
and the charging
function fails.
When the mains is
normal, the UPS works
in bypass mode and does
not transfer to inverter
mode.
The buzzer is activated,
and the Fault indicator is
on.
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Possible Cause
threshold 280 V or is
less than the lower
threshold 80 V.
PFC soft-startup fails.
The power module is
faulty.
The UPS is overloaded
or short-circuited.
Inverter overtemperature
occurs.
The power module is
faulty.
The charger fails.
The charger experiences
overcurrent.
The charger experiences
undervoltage.
Set the UPS working
mode to ECO mode.
The bypass transfer
times reach the upper
threshold.
The bypass thyristor is
damaged.
The bypass module
experiences
overtemperature.
7 Troubleshooting
Measure
the threshold. If yes,
contact the electric
power company.
Replace the power
module.
Replace the power
module.
Reduce load or rectify
short circuits.
Install more air
conditioners or
ventilation devices to
ensure normal
temperatures inside the
equipment room.
Replace the power
module.
Replace the power
module.
Replace the power
module.
Check whether the
configured number of
batteries is correct. If the
value is correct but the
alarm persists, replace
the power module.
Set the working mode
correctly.
Clear the bypass transfer
times on the LCD.
Replace the bypass
module.
Reduce the load, or
improve ventilation.
276