Nortel Passport 15000 Preparation Manual page 142

142 Chapter 4 Power and grounding preparation
241-1501-205 5.2S2
Each input stud at the rear of the BIP is provided with a narrow-tongued
2-hole 90-degree offset 2/0 AWG lug (part number A0757391) underneath a
clamped insulating boot. The boot prevents direct access to the power
connections and potential shorting between adjacent connections. The power
input cables must have been installed directly to the studs on the BIP or to a
power-and-ground assembly that relays the feeds to the BIP.
CAUTION
Risk of equipment damage by reversed polarity
Use the plus (+) and minus (-) symbols on the rear of the
breaker interface panel (BIP) to ensure that the polarity of
each A and B battery (-48/-60 V dc) and battery return for
the input power feeds is correct. When powering up the
BIP, reversed polarity will damage circuits inside it.
When connecting power input cables to the rear of the BIP, you will be
connecting to the breaker interface modules (BIMs) on the other side of the
BIP backplane. Determine each appropriate connection from the information
in the table "Feed codes of the BIP BIMs, rear view" (page 142).
When connecting power output cables from a system of ac rectifiers to the
BIP, ensure that the dc power cable connections at the system support the
redundant A and B feeds with correct polarity from the BIP. Determine the
correct connection pattern and labelling for the system of ac rectifiers from
the table "Feed codes of the BIP BIMs, rear view" (page 142).
Table 27
Feed codes of the BIP BIMs, rear view
Position of BIM
left BIM
middle left BIM
(Sheet 1 of 2)
At rear of BIM
right pair of studs
left pair of studs
right pair of studs
left pair of studs
Label Output to
A1+ lower shelf
A1-
B1+ lower shelf
B1-