Breaker Interface Modules (Bims); Bip With Two Or Four Bims - Nortel Passport 15000 Hardware Description

54 Chapter 2 Breaker interface panel

Breaker interface modules (BIMs)

BIP with two or four BIMs

241-1501-200 5.2S2
The front cover can be opened to access the retaining screws holding the
breaker interface modules (BIMs) and alarm module in place. See "The BIP
in a NEBS 2000 frame, front view" (page 52) for an illustration of the BIP
with the front cover opened.
This section describes the location and functions of the breaker interface
modules (BIMs) inside the breaker interface panel (BIP). It provides
information on the following topics:
• "BIP with two or four BIMs" (page 54)
• "Location of the BIMs" (page 55)
• "Functions of the BIMs" (page 55)
• "BIMs distributing power to PIMs" (page 56)
• "Combined BIM pairs in a BIP" (page 60)
• "Front panel of a BIM" (page 60)
• "BIM power filters" (page 61)
Two models of the BIP are available: one with two breaker interface modules
(BIMs) or one with four BIMs. The two-BIM model is used in the NEBS
2000 frame or equivalent mounting apparatus to support only one
Passport 15000 or 20000 (for example, in equipment packages NTQS10 and
NTHQ10). The four-BIM model is used in NEBS 2000 frame when two
Passport 15000 switches or two Passport 20000 switches are housed (for
example, in equipment packages NTQS20 or NTQH20). If a two-BIM model
is used (for example, in NTQS04 and NTQH04), the empty BIM slots are
covered with filler plates to protect BIP circuitry and to meet safety
requirements. See "BIM filler plates" (page 62) for more information.
When a second switch is added to the NEBS 2000 frame, two additional
BIMs can be added to the BIP to power that switch. Refer to the criteria in
"Combined BIM pairs in a BIP" (page 60).