User's Manual

Power Application - Normal Power-up68P09255A69-3

Aug 2002

1X SC4812ET Lite BTS Optimization/ATP Software Release 2.16.1.x

PRELIMINARY

2-23

Table 2-12: Apply DC Power to BTS Frame

Step Action

Confirm that the MAP AMP display continues to indicate between 20 and 60 amps during power

application.

NOTE

No battery charging or heavy RF loading is present at this point.

If the frame is equipped with back-up batteries, close (push in) the battery shelf circuit breakers

(Figure 2-3) for connected batteries only. This process should be completed quickly to avoid excess

charge current draw by individual battery strings.

NOTE

If the batteries are sufficiently discharged, the battery circuit breakers may not engage individually

because of surge current. If this condition occurs, disconnect the batteries from the 27Vdc bus by

setting the MAP power switch to OFF, and then engage all the connected battery circuit breakers. The

MAP power switch should then be turned ON.