6 Parallel System Commissioning
Wear personal protective equipment and use dedicated insulated tools to avoid
electric shocks or short circuits.
6.1 Starting a Parallel System
Prerequisites
● Before starting a parallel system, ensure that each UPS has been commissioned
(see 5.1 Powering On and Starting the UPS).
● Choose Monitoring > UPS System > Running Parameter > System Settings
on the WebUI of each UPS and set EPO detection to Enable.
● If you commission the parallel system where UPSs are not powered o after
they are commissioned individually, skip step 4. In addition, ensure that step 1
is performed before commissioning a single UPS.
● Ensure that all load circuit breakers in the system are OFF. Do not start loads
before the parallel system is started.
● Before connecting parallel cables, if you turn on the external output power
switch of the rack by mistake, the system may report alarm 0570-002 BPM
unit abnormal. In this case, you need to power o the rack to clear the alarm.
UPS5000-A-(30 kVA-120 kVA)
User Manual 6 Parallel System Commissioning
Issue 17 (2024-02-21) Copyright © Huawei Digital Power Technologies Co., Ltd. 131
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