Installation Manual Part 3

PRELIMINARY
6-22
BWX 8415 Basestation Installation and Commissioning Guide
OL-19519-01
Chapter 6 Installation
6.4.3 System Power Cabling
6.4.2.1 Lightning Protection
Lightning protection information is covered in Chapter 5, “Pre-installation.” Please review that section
before continuing with the installation process.
6.4.2.1.1 Surge Arrestors
The BWX 8415 Basestation contains primary lightning protection on the GPS cable and the -48V power
cable. A DC primary lightning protector is also recommended at the output of the main power supply.
6.4.3 System Power Cabling
Install the power cable to the power connectors on the RU. Always refer to the regulatory standards for
power and grounding.
Warning Read the installation instructions before connecting the system to the power source. Statement 1004
Warning A readily accessible two-poled disconnect device must be incorporated in the fixed wiring. Statement
1022
Warning Connect the unit only to DC power source that complies with the safety extra-low voltage (SELV)
requirements in IEC 60950 based safety standards. Statement 1033
Follow these instructions to properly connect the power cabling to the BS:
Step 1 If using insulated 6-AWG or 8-AWG copper wire, strip the insulation as required for the power lugs.
Step 2 Use the appropriate crimping tool to crimp the supplied 6-AWG or 8-AWG power lugs to the bare copper
wires.
Step 3 Apply heat shrink to the power lugs.
Step 4 Open the electrical joint compound (supplied), and apply a liberal amount over the metal surface where
the power connectors are located.
Step 5 Connect the power cable leads (2 RTN and 2 -48V) to the BS using the supplied nuts with lock washers.
Tighten the nuts to 48 in-lbs. (5.4 Nm). Refer to
Figure 6-22.