Power, Ground and Battery Cabling for Sites Equipped With Optional
Primary Surge Suppressor
PRELIMINARY
SC
t
300 BTS Hardware Installation, ATP and FRU Procedures
DEC 2000
5-12
Objective
The objective of this procedure is to install the power, earth ground, and
battery cabling for one or more Microcell or Picocell units at a site
equipped with optional Primary Surge Suppressor.
Dangerous voltages, capable of causing death, are present
in this equipment. Use extreme caution when handling and
testing this equipment.
WARNING
Other Grounding
Considerations
This procedure covers only the grounding information for the ground
cables that attach to one or more Microcell or Picocell units. Grounding
considerations beyond the ground cables that attach to the Microcell or
Picocell are summarized in Appendix A. Refer to Appendix A and the
site documentation for other grounding considerations.
Power Considerations and
Configurations
The Primary Surge Suppressor is designed for 120/240 VAC 3–wire plus
ground single phase.
The power and battery configurations for the MicroCell and PicoCell
units are:
S
AC power only (no battery)
S
AC power with short duration battery
S
DC power
Neither the ”+” or ”–” terminal of the DC Input is
connected to the BTS ground. If a negative supply input is
provided, the ”+” terminal of the DC input must be
connected to the Master Ground Plate (MGP). By
connecting the ”+” terminal of the DC input to the MGP, a
negative supply system is created.
NOTE
5