Nortel Networks 8010co manual 1 3 2 1 3 2 1 a 1 a 2 B 1 B

28Chapter 1 Overview

Figure 9 Power terminal block

7

2 3 4 5 6 8

9

1	10
3 2 1 3 2 1	3 2 1 3 2 1 A1 A2 B1 B2

PS (+)	PS (+) A/B Input Feed		PS (-)	PS (-)	– 48 VDC
Lower Shelf	Upper Shelf	Returns	Lower Shelf	Upper Shelf	A/B Input Feeds

1 = To frame (rack) ground

2 = To lower shelf power supplies (+DC terminals)

3 = To upper shelf power supplies (+DC terminals)

4 = Returns (A/B input feeds)

5 = To lower shelf power supplies (-DC terminals)

6 = To upper shelf power supplies (-DC terminals) 7 = -48 VDC input feed (Primary A feed)

8 = -48 VDC input feed (Secondary A feed)

9 = -48 VDC input feed (Primary B feed) 10 = -48 VDC input feed (Secondary B feed)

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Figure 10 on page 29 shows an example of the BIP power terminal block cabling including ground connections for two 8010co chassis and installed power supplies.

As shown in this example, both upper and lower chassis are each fully configured with three power supplies (one is redundant) and require four 60 A direct current input feeds to the BIP (two feeds are redundant).

For more information, see “Connecting DC input power feeds to the BIP” on page 52.

Caution: All DC input feeds to the breaker interface panel must be equipped with an overcurrent protection device that limits current to a maximum of 60 A. The overcurrent protection device can be any approved, standard-delay, 60 A fuse or circuit breaker with an interrupting current rating of not less than 10,000 A.

312755-G Rev 00