Cisco Systems 8600 Series manual Optional AC Power Supply Assembly

Physical Description

Nodes may be equipped with either a single PEM or dual PEMs for redundancy. They are mounted at the back of the node below the backplane. A conduit hookup box or an insulated cover plate is provided for terminating conduit or wire at the DC power input. It is recommended that the source of DC for the node be redundant and separately fused.

Figure 2-3 DC Power Entry Module Shown with Conduit Box Removed

ON	CONDUCTORS
CB1		USE COPPER
OFF			ONLY
	+RTN	SAFETY
		GROUND

–48V

Plastic

CoverDC Terminal

Block

H8019

Optional AC Power Supply Assembly

For applications requiring operation from an AC power source, an optional AC Power Supply Assembly and shelf is available. It provides a source of –48 VDC from 208/240 VAC input. A shelf, separate from the BPX switch shelf, houses one or two AC Power Supplies and mounts directly below the node cabinet. This provides a secure enclosure for the power supply assemblies (supplies cannot be removed without the use of tools).

Two of these supplies are usually operated in parallel for fail-safe redundant operation. The front of the AC Power Supplies for the BPX switch includes two green LEDs to indicate correct range of the AC input and the DC output for each individual supply (see Figure 2-4).

2-4Cisco BPX 8600 Series Reference