Nortel Networks 1000M warranty Four-Feed PDU, Standard two-feed wiring

Installing DC power Page 117 of 456

Four-Feed PDU

The Four-Feed PDU (NT4N49AA) supports independent power feeds to each of four modules in a stack if required. However, in a typical installation where independent power feeds are not required, two jumper wires are provided to jumper adjacent battery leads. When the jumper wires are used, the four-wire PDU effectively provides the same “shared” power configuration provided by the existing DC PDU. Therefore, the new PDU is backward compatible and can replace an existing PDU unit in a stack, if required.

Figure 40

Standard two-feed wiring

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			553-AAA0467

The NT4N49AA DC PDU:

•supports four input circuits, implemented through the following terminal configuration: four (negative) battery leads, four return leads, and logic return lead

•is fully backward compatible with the existing PDU it is replacing

•supports independent power feeds to each of four modules

Communication Server 1000M and Meridian 1 Large System Installation and Commissioning