Huawei UPS5000-E Series - Quarterly Maintenance; Annual Maintenance

UPS5000-E-(50 kVA-300 kVA)
User Manual (50 kVA Power Modules)
6 Routine Maintenance
Issue 11 (2019-12-20)
Copyright © Huawei Technologies Co., Ltd.
241
Check Item
Expected Result
Troubleshooting

Output voltage: 380 V AC, 400
V AC, or 415 V AC (tolerance
± 1%, line voltage)

Frequency: 40–70 Hz
connection.

If the output voltage is
abnormal, check the UPS
running status and check
whether an alarm is generated.
Information on
the LCD
The status icons on the LCD
indicate that all units are operating
properly, all operating parameters
are within their normal ranges, and
no fault or alarm information is
displayed.
If an alarm is generated, rectify the
fault by checking the device status
and parameters.
6.1.2 Quarterly Maintenance
Table 6-2 Quarterly maintenance
Check Item
Expected Result
Troubleshooting
Cleanliness
Wipe the cabinet surface using a
white paper and the paper does not
turn black.
Remove the dust, especially from
the air filter on the front door, or
replace the air filter.
Parameter
configuration
The configuration of the output
voltage grade, frequency, number
of batteries, and battery capacity
meets requirements.
Reset the parameters.
Status record
Record the three-phase load rate
and output power factor.
If an exception occurs, check the
load status.
Shallow
discharge test
(recommended)
Conduct a shallow discharge test
when the UPS is backed up to
verify that the batteries can
discharge normally.
If an alarm is generated, refer to
the alarm list.
6.1.3 Annual Maintenance
Table 6-3 Annual maintenance
Check Item
Expected Result
Troubleshooting
Grounding
Check that the ground
cables are connected
securely.
Tighten the screws.
Power cables and terminals
(between the UPS and the
power distribution cabinet)
The insulation layer of
cables is intact and terminals
are free from black marks

Replace the cables.

Secure the output
terminals.