Connecting A Remote Epo Switch - Huawei UPS5000-A User Manual

UPS5000-A-(400 kVA-600 kVA)
User Manual (60 kVA, PF=0.9)

3.2.6 Connecting a Remote EPO Switch

● The Company does not provide the EPO switch or cable. The recommended
● Equip the EPO switch with a protective cover to prevent misoperations, and
● Triggering EPO will shut down the rectifier, inverter, charger, and static bypass,
Connect the EPO switch to the dry contact on the UPS using a cable.
●
●
Figure 3-38 Cable connections for an NC EPO switch
Figure 3-39 Cable connections for an NO EPO port
Issue 06 (2022-01-27)
NO TICE
cable size is 22 AWG.
protect the cable with a protective tube.
but will not disconnect the UPS mains input. To power off the UPS completely,
you can turn off the upstream input switch when you trigger EPO.
Figure 3-38 shows the cable connections for a normally closed (NC) EPO
switch.
Figure 3-39 shows the cable connections for a normally open (NO) EPO
switch.
NO TE
● When the NC status is required, remove the jumper between EPO_NC and EPO_12V
first. In this way, the EPO is triggered when you turn off the EPO switch.
● When the NO status is required, ensure that the jumper is connected between EPO_NC
and EPO_12V. In this way, the EPO is triggered when you turn on the EPO switch.
Copyright © Huawei Technologies Co., Ltd.
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