Emerson Basic Rack PDU - NetSure RDB Series Manuel d'utilisateur télécharger pdf (Page 9)

Electrical Connections

2.3 Connecting External Circuit Breaker Alarms

Negative 48Vdc is provided to a set of alarm terminals if any circuit breaker is in the OFF position.

See Figure 5.

Figure 5 Alarm Connections

Typical

Rack PDU

Bottom View

Circuit Breaker Alarm Connector

(mating screw-type connector supplied,

wire size range 16-24 AWG,

recommended torque 1.8 in-lbs)

-48Vdc signal provided

to both terminals when

any circuit breaker is

in the OFF position.

Typical interconnections when

“daisy-chaining” multiple Rack PDUs.

-48Vdc alarm signal (out)

(to ACU+ Controller in a NetSure ITM DC UPS

or Customer Monitoring Equipment)

When used with other monitoring equipment, refer to the

instructions supplied with this equipment.

When used with a NetSure ITM DC UPS, refer to Section 6040

(NetSure ITM Installation Instructions) for circuit breaker alarm

connections to the ACU+ Controller.

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Emerson Basic Rack PDU - NetSure RDB Series Manuel d'utilisateur Page 9