Nortel Networks 8010co manual Locating the a and B -48 VDC input feeds

54Chapter 2 Installation

To connect the DC input feeds to the BIP:

1Locate the DC power source for the DC input feed.

Warning: Ensure that the DC power source is off or disconnected on the remote end before you perform any of the steps in this section. You may need to switch a circuit breaker off or turn off power at the DC input source.

2Determine the power requirements for your configuration (see Figure 35 on page 53).

3Locate the A and B -48 VDC input feeds (Figure 36).

Note: Figure 36 shows an example of a site DC input conduit. Your DC input conduit can look different or can be in a different location than the one shown in the following examples.

The -48 VDC input feed cables should be tagged with source labels (for example, -48 VDC Input feed or -48 VDC Return). If they are not labeled, and you are not sure of the source, ask for assistance from a qualified electrician.

Figure 36 Locating the A and B -48 VDC input feeds

-48 VDC Feeds

-48VDC A feed 1 Return A feed 1

-48VDC B feed 1

-48VDC A feed 2

Return B feed 1 Return A feed 2

-48VDC B feed 2 Return B feed 2

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