User's Manual

SC 4812ET/SC 614 BTS DC Power Sharing

– continued

Apr 2001

V0D.03

4812ET RF and Power Cabinet Hardware Installation Manual

DRAFT

155

Table D-6: Procedure to Install DC Power Cables

Step Action

11d – Place the M10 nut over the stud and on top of the washer.

! CAUTION

Exceeding the torque limit may damage the stud.

11e – Torque (tighten) nuts to 11–12 N–m (100–110 in–lbs).

12 Repeat steps 11a through 11e for the remaining power cables.

13 Position the lug cover over the base and lock the cover (it will snap) onto the enclosure base.

14 Slide each grommet down the cable and over the cable entry hole.

15 Repeat step 5 through step 14 for the Power Cabinet connections.

16 Verify that DC polarity between the RF and Power Cabinet is correct.

Checks

Check that all AC & DC breakers are turned OFF in both the SC

4812ET RF and Power Cabinet. The SC 614 Cabinet should have the

DC buss bar (six breakers) closed, and the 100 amp breaker on the BBI

open.

Check that the DC Power cables between the Power and RF Cabinets are

connected with the correct polarity. There are two red and two black

cables for the SC 4812ET and one red and one black cable for the SC

614 BTS

Confirm that split phase 240/120 AC supply is correctly connected to the

AC Load Center input in the SC 4812ET Power Cabinet.

Failure to connect the proper AC feed will damage the

surge protection module inside the AC Load Center.

CAUTION

Applying AC Power

For instructions on applying AC and DC power to the BTSs refer to the

appropriate BTS Optimization/ATP manual.