UPS5000-E-(50 kVA-300 kVA) 
User Manual (50 kVA Power Modules) 
 
Copyright © Huawei Technologies Co., Ltd. 
 
Figure 3-96 Cable connection for an NC EPO switch 
 
 
Figure 3-97 Cable connection for an NO EPO switch 
 
 
 
 
When the EPO switch is in the NC state, remove the jumper between EPO_NC and EPO_12V 
before connection. When the EPO switch is turned off, 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 the EPO switch is turned on, EPO is triggered. 
3.2.12 Connecting Communications Cables 
Procedure 
Step 1  Connect the external network management device to the RS485 port. 
Step 2  Connect the network port on a PC to the FE port of the monitoring interface card. 
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3.3 Installing a Parallel System 
3.3.1 Installing the UPSs 
Context