Specifications

Installation Reference
Eaton PDU (150 kVA) Installation and Operation Manual 164202126—Rev 5 www.eaton.com/powerquality A-63
Figure A-54. PDU Interface Terminal Detail
Figure A-55. Typical Alarm Relay Connection
1 8
1 3
UCB
Building Alarm 1
Building Alarm 1 Return
Building Alarm 2
Building Alarm 2 Return
REPO
REPO Return
Local EPO (factory wired)
Local EPO Return (factory wired)
Alarm Relay Common
Alarm Relay NO
Alarm Relay NC
TB2
TB1
NOTE All building alarm inputs require an isolated normally-open or normally-closed contact or switch (rated at 24 Vdc, 20 mA minimum)
connected between the alarm input and common terminal as shown. Building alarm inputs can be programmed for use with either
normally-open or normally-closed contacts. All control wiring and relay and switch contacts are customer-supplied.
NOTE The building alarms can be programmed to display the alarm functional name using the front panel LCD controls.
TB2
Alarm
Relay
3
1
2
Alarm Relay NC
Alarm Relay Return
Alarm Relay NO
NOTE Alarm relay contacts have a maximum current rating of 5A and a switched voltage rating of 30 Vac and 28 Vdc.
NOTE Alarm relay wiring should be a minimum of 22 AWG.
NOTE Do not directly connect relay contacts to the mains related circuits. Reinforced insulation to the mains is required.
NOTE Relay is shown in de-energized state. By default, the relay changes state when a panelboard or subfeed breaker overload occurs.
Figure A-54. PDU Inter
f
ace Terminal Detai
l
Figure A-55. Ty
p
ical Alarm Relay Connectio
n