Nortel Passport 15000, Установка и обслуживание оборудования, Страница: 489 / 874

Chapter 17 Hardware procedures 489
Passport 15000, 20000 Hardware Installation, Maintenance, and Upgrade 5.2S2
Installing a power-and-ground cable assembly
Install a power-and-ground cable assembly to enable using power input
cables smaller than 1/0 AWG (53.5 mm
2
) or less flexible than Super Flex
cables to feed the breaker interface panel (BIP).
Prerequisites
• You must be familiar with “Safety considerations and best practices”
(page 53).
• You need a polyvalent power-and-ground assembly with part number
A0834143 or an ETSI power-and-ground assembly with part number
A0843149. The ETSI kit contains large green pan-head slotted machine
screws or 10-mm (3/8-in.) thread-forming hex-head screws for fastening
the frame ground cables.
• You need the following specialty tools:
— a medium Pozidriv screwdriver, for example a number 2 (do not
substitute a Phillips bit)
— an 11-mm (7/16-in.) deep socket with a properly calibrated torque
wrench capable of 6.5 Nm (57.5 in.-lbs) and a 20-cm (8-in.)
extender for the lug nuts
• You need a helper to hold the power-and-ground assembly until it is
fastened to the mounting apparatus.
• The terminal blocks on the assembly rail approximately align with the
pairs of battery and battery return studs at the rear of the BIP. Their
uneven spacing is normal.
Procedure steps
1 At the rear of the BIP, unfasten any cables dressed along the horizontal
strain-relief bar. These are likely to be the red power output and alarm
cables from the BIP to other hardware parts. Leave the cables connected
at both ends.
2 Note the orientation of the strain-relief bar at the uprights and remove its
four 10-mm (3/8-in.) screws, as shown in the figure “The polyvalent
power-and-ground assembly A0834143” (page 493). Put the screws and
bar aside temporarily.
3 Hold the power-and-ground assembly in the air so that: