Nortel Networks NN44200-300 - Manual (Page 42)

42 Chapter 4 Power supply installation
Bringing power and ground into the PDU
Introduction
Install BAT/BATRTN wires in pairs. Each pair of wires supplies voltages to a
module through a power harness. The module harnesses are installed in
the cabinet PDU and connected to the modules at the factory. See
"About
the power distribution unit" (page 40) .
To bring DC power and ground into the PDU
Step Action
1 If you are using a conduit, terminate the 32 mm (1-1/4 in.) or 19 mm
(3/4 in.) conduit at the top rear of the cabinet or at the bottom front of
the cabinet using the knockouts provided. The number of wire pairs
you can run in each conduit depends on the wire gauge.
Note: To preserve ground integrity, the conduit must be
insulated.
2 Select a power feed with a circuit breaker dedicated to each module,
and identify it with an appropriate tag.
3 Select a wire size to suit the required feed length from the power
source (see
"DC wire gauge tables" (page 36) ).
4 Use pliers to strip 6 mm (1/4 in.) to 13 mm (1/2 in.) of the insulation
from one end of all power and ground feed wires.
5 Undo the terminal block screws at (-) positions 0, 1, 2, and 3.
6 Insert the red wires into terminal block positions 0, 1, 2, and 3.
7 Secure the wires in the terminal block by tightening the screws.
8 Undo the terminal block screws at (+) positions 0, 1, 2, and 3.
9 Insert the black wires into terminal block positions 0, 1, 2, and 3.
10 Secure the wires in the terminal block by tightening the screws.
11 Select a #10 AWG green wire safety ground and attach it to the
cabinet.
12 Measure the module ground continuity by touching one multimeter
lead to any BATRTN terminal block connector and the other end
to the GND terminal block connector. Ensure the measurement is
between 0-0.5 ohms.
—End—
Nortel CallPilot
1002rp Server Hardware Installation
NN44200-300 01.01 Standard
5.0 23 February 2007
Copyright © 2007, Nortel Networks Nortel Networks Confidential
.