User's Manual
Power, Ground, and Battery Cabling for Sites Equipped with Optional
Primary Surge Suppressor
DRAFT
SC300 1X BTS Hardware Installation, ATP, and FRU Procedures
JAN 2002
5-8
Objective
The objective of this procedure is to install the power, earth ground, and
battery cabling for one or more Microcell 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 units. Grounding
considerations beyond the ground cables that attach to the Microcell are
summarized in Appendix A. Refer to Appendix A and the site
documentation for other grounding considerations.
Motorola recommends that you use an oxide inhibitor such
as Burndy PENETROX or Ilsco DE–OX on all the
external ground connections on the unit and on the primary
surge suppressor for all outdoor installations. This
includes the ground connections on the mounting bracket,
the Site I/O, and the five mechanical lugs on the primary
surge suppressor.
NOTE
Power Considerations and
Configurations
The Primary Surge Suppressor is designed for 120/240 VAC 3–wire plus
ground single phase 30 amp min. service.
The power and battery configurations for the MicroCell unit is:
AC power only (no battery)
AC power with short duration battery
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