Connecting Signal Cables; Optional) Connecting A Battery Grounding Failure Detector; Connecting A Remote Epo Switch - Huawei UPS5000-E-12 User Manual

UPS5000-E-(40 kVA-320 kVA)
User Manual

3.2.13 Connecting Signal Cables

3.2.13.1 (Optional) Connecting a Battery Grounding Failure Detector

Connect the alarm relay output terminals on the battery grounding failure detector to the dry
contact card on the CM. For details, see the UPS Battery Grounding Failure Detector User
Manual.

3.2.13.2 Connecting a Remote EPO Switch



Connect the EPO switch to the dry contact card on the UPS.
and
Figure 3-56 EPO NC connection
Issue 10 (2015-09-15)
Huawei does not provide an EPO switch and cable. Prepare them before installation. The
22 AWG cable is recommended. AWG is short for American wire gauge.
To prevent problems, equip the EPO switch with a protective cover, and enclose the cable
with a protective tube.
Figure 3-57 shows the NO state.
When the EPO switch is in the NC state, remove the jumper between EPO_NC and EPO_12V before
connection. When you turn off the EPO switch, EPO is triggered. When the EPO switch is in the NO
state, ensure that the jumper is connected between EPO_NC and EPO_12V. When you turn on the EPO
switch, EPO is triggered.
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
3 Installation
Figure 3-56 shows the NC state,
84