UPS5000-S-1200 kVA
User Manual
5 Operations
Issue 04 (2019-06-25)
Copyright © Huawei Technologies Co., Ltd.
160
5
Operations
5.1 Powering On and Starting the UPS
5.1.1 Powering On the UPS
Prerequisites
Before powering on the UPS, ensure that the UPS has passed all check items in the
section "Installation Verification."
Before powering on the UPS, ensure that there is no voltage at the UPS input switch and
upstream input switch by measuring.
Before powering on the UPS, ensure that all the UPS switches and upstream switch are
OFF.
Procedure
Step 1
Close the upstream bypass and mains input switches.
Measure the voltage and frequency of the UPS input switch and upstream input switch. The
line voltage range is 138–485 V AC, and the frequency range is 40–70 Hz.
Step 2
Turn on output circuit breaker 1 (Q5-1) and output circuit breaker 2 (Q5-2).
Step 3
Turn on mains input circuit breaker 1 (Q1-1), mains input circuit breaker 2 (Q1-2), and bypass
input switch (Q2).
After the UPS is powered on, initialization begins. The MDU displays the Huawei logo and
an initialization progress bar.
----End
5.1.2 Initial Startup