Octel XC1000, Service Manual

Page: 81 / 889

PLATFORM INSTALLATION
3-17 Edition One XC1000 Service
to section 2.6 for details about cable preinstallation. Make –48 Vdc and
return connections to the cabinet with #2-AWG wire. Use one connection
for both single- and dual-cabinet versions. Perform the following steps to
connect power to the XC1000 and to install the grounds:
Make sure that all branch circuit breakers to the XC1000 are
set to OFF before connecting the –48 Vdc cable to the
XC1000. Otherwise, damage to the equipment could occur or
installation personnel could be injured.
Warning!
1. Connect the #2-AWG chassis-ground wire to the double-stud ground
located above the cabinet 1 terminal block, inside the power-distribution
shelf, as shown in Figure 3-7. The double-stud ground is part of the
cabinet frame structure. Secure the chassis-ground wire with
1
/
4
–20
nuts and lock washers. A compression-clamp grounding lug is supplied;
a swaged lug is available as an option.
CABINET 1
GROUND
RETURN (+)
–48 VDC (–)
POWER-DISTRIBUTION SHELF
REAR VIEW
CHASSIS
CHASSIS-GROUND
WIRE
INPUT POWER
(+)
(–)
CRIMP OR
COMPRESSION
LUGS
MAIN-POWER-
INPUT TERMINAL
BLOCK
POWER TERMINAL
INTERCONNECT BLOCK
FOR CABINET 2
Figure 3-7. Connecting Input –48 Vdc, Return, and Ground to the Cabinet.
2. Connect the other end of the chassis-ground wire to the CO safety-
ground bus. In many offices, the safety-ground and main telephony-
ground busses might be the same.
SECTION 3.6