User's Manual Part 1

March 29, 2006 Part ######A revision 00a-DRAFT 57
Chapter 4: Base Station Installation Procedures
Attach the Main and Return Power Cables
Refer to the MOPs before scheduling or beginning any work involving the site’s main power. Before
proceeding with this procedure, ensure that all the necessary site cable layout, runaway, and grid work
has been completed.
 To attach the main and return power cables
1 If necessary, remove the PDP rear cover. The rear cover attaches to the PDP using four #1 Phillips
screws.
2 Ensure that all the circuit breakers on the PDP are in the OFF (down) position.
3 Ensure that the main DC power supply is powered off.
4 Connect each of the three main power cables to the positive terminals of your DC power supply using a
minimum of #2 AWG stranded copper wire.
5 Connect each of the three return power cables to the negative terminals on your DC power supply using
a minimum of #2 AWG stranded copper wire.
6 Terminate each of the cables with a two-hole compression lug with the dimensions shown in Figure 4.5
on page 55. Apply an anti-oxidant solution to each cable before attaching the compression lug.
NOTE: When crimping the compression lug, ensure that you are using the
appropriate tool. Compression lugs for #2 AWG wire are colored brown and require that
a brown die be used with the crimping tool.
7 Apply an anti-oxidant solution to the main and return terminals on the PDP.
8 Connect the compression lugs on the return power cables to the three return terminals shown in Figure
4.7. Use 1/4-inch hex nuts with 1/4-inch split-lock washers when securing the cables. Torque each hex
nut to 78 inch-pounds.
9 Connect the compression lugs on the main power cables to the three DC power terminals shown in
Figure 4.7. Use 1/4-inch hex nuts with 1/4-inch split-lock washers when securing the cables. Torque
each hex nut to 78 inch-pounds.
WARNING: Ensure that the necessary requirements and procedures have been
reviewed prior to the start of any power-related activity. Refer to your power cut-over
MOP for procedures specific to your site.
Ensure that the main DC power supply and the base station are powered off before you
begin this procedure. Failure to turn off the power supply may result in personal injury or
death and cause damage to or destruction of the base station and surrounding
equipment.