Specifications

CHAPTER
10-1
Cisco BPX 8600 Series Installation and Configuration
Release 9.3.0, Part Number 78-10674-01 Rev. D0, July 2001
10
Installing the DC Shelf
This chapter explains how to connect the DC power supply to the BPX switch:
• DC Power Input Connections
• Card Slot Fuses
• Fan Power Fuses
Before proceeding in this chapter, complete the procedures in either:
– Chapter 8, Installation with Cisco Cabinets including 7000 Series Routers
or
– Chapter 9, Installation in Customer Cabinet
DC Power Input Connections
There are two ways to configure a DC-powered BPX switch:
• Single DC Power Entry Module, single power feed
• Dual DC Power Entry Module, dual power feed
Connect wiring from a -48 VDC power source to one or two DC Power Entry Modules (see
Figure 10-1). This wiring is provided by the installer.
A metallic conduit box that meets all electrical codes for attaching electrical conduit is factory-installed
Figure 10-2. A simple plastic cover is also enclosed for customers who do not require conduit
protection for the input power leads Figure 10-3. Use conduit if required by local electrical code.
Only a source that complies with the safety extra low voltage (SELV) requirements in UL1950, CSA
C22.2No.950,EN60950maybeconnectedtoaBPXswitchDCsystem.
To make DC power connections to the BPX switch:
Step 1 Locate the conduit terminating box, one for each Power Entry Module. (See Figure 10-2.) Remove the
two cover screws and lift off the cover. If conduit is required, proceed to
step 2. If conduit is not required, proceed to step 3.
Step 2 Determine which knockout to remove (rear or bottom). Remove knockout and install conduit fitting.
Step 3 If conduit is not required, remove the conduit box by removing the two screws, one above the terminal
block and one below it.