Huawei UPS5000-E-300K-SMT - Remote EPO

UPS5000-E-(50 kVA-300 kVA)
User Manual (50 kVA Power Modules)
3 Installation
Issue 02 (2017-02-25)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
113
Figure 3-77 Connecting signal cables
The number and colors of signal cables in Figure 3-77 are for reference only.
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3.2.9 Remote EPO

Huawei does not provide the EPO switch or cable. If the cable is required, the
recommended cable is 22 AWG.

Equip the EPO switch with a protective cover to prevent misoperations, and cover the
cable with protective tubing.

Triggering EPO will shut down the rectifier, inverter, charger, and static bypass, but does
not disconnect the UPS mains input. To power off the UPS completely, open the front-end
input switch when triggering EPO.
Connect the requisite EPO switch to UPS dry contacts.

Figure 3-78 shows the cable connections for an NC EPO switch.

Figure 3-79 shows the cable connections for an NO EPO switch.