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UPS2000-G1-(6 kVA–10 kVA)
User Manual
2.
3.
Step 4 Switch on the general output breaker and then all branch output breakers, and finally startup
loads one by one.
----End
4.3.2 Shutting Down Parallel-Running UPSs
To shut down parallel-running UPSs, perform the following steps:
Step 1 Shut down all loads, and keep the UPSs running without loads for about 10 minutes to
dissipate heat.
Step 2 Press the
Step 3 Switch off all breakers.
----End
4.3.3 Exiting a Faulty UPS
If a UPS becomes faulty, it exits from the parallel system automatically. In addition, an
audible and visual alarm is generated. You can follow the procedure shown in Figure 4-1 to
exit the faulty UPS.
Issue 05 (2013-07-17)
Release the MENU button. About 0.6 second later, hold it down for 0.6 second.
The message "Parallel UPS Set OK?" is displayed.
Press the
button for 1 second.
CAUTION
Before switching on the output breaker of the parallel system, measure the gap between
the maximum and minimum output voltages. If the gap is greater than 5 V, check that the
output voltage of each UPS is within the rated voltage range. If the gap is greater than 10 V,
contact Huawei technical support for repair.
After switching on the output breaker of the parallel system, check the output cross current
of each UPS. If any output cross current exceeds 3 A, contact Huawei technical support for
repair. Otherwise, the inverter will be damaged.
NOTE
If not all UPSs in the parallel-running system shut down, the LINE, BYPASS, and OUTPUT indicators
on the stopped UPSs are steady on, which indicates that the UPSs work in bypass mode.
button on each display panel.
NOTE
It is recommended that parallel-running UPSs not frequently be shut down when they are working
properly.
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
4 Operation Instructions
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