APC 150kVA PDU W/ 480 PRI 208/120 SEC K1 XMER Specifications download pdf (Page 25)

150 kW InfraStruXure Power Distribution Unit 17

Connect an Emergency Power Off Switch

Overview

Connecting the switch. The

Emergency Power Off (EPO) switch

connects to the user connection plate. The

figure on the right shows the location of

the user connection plate on the roof of the

PDU. Three types of EPO connections are

available on this plate:

• Contact closure

•24 VAC

• 24 VDC

Configuring and testing. Configuring and

testing of the switch is done through the EPO

interface on the PDU monitoring unit. The

figure on the right shows the PDU monitoring

unit and the location of the EPO LEDs and DIP

switches.

Note

APC offers an optional InfraStruXure EPO system (EPW9). Contact your APC sales

representative or visit the APC Web site (www.apc.com) for more information.

Caution

If you are not connecting an emergency power off switch to the PDU, leave the

Arm/Test rocker switch on the PDU monitoring unit in the Test position.

Note

The PDU monitoring unit provides the EPO function. The purpose of this function

is to activate any shunt trips controlled by the PDU monitoring unit in emergency

situations. Shunt trips are present on the main input breaker of the PDU and on

breakers that support the power source feeding the PDU.

Note

Contact closure is recommended.

1 234

ATS E N

ATS 0

AT S 1

ATS 2

EPO

Contact

– +

EPO 24 V

AC/D C

Contact Inputs

Contact Outp uts

USER INTERFACE

MADE IN USA

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APC 150kVA PDU W/ 480 PRI 208/120 SEC K1 XMER Specifications Page 25

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