User's Manual

Initial Power-up68P09255A69-3

Aug 2002

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

PRELIMINARY

2-11

Table 2-4: AC Voltage Measurements

Step Action

7a - Measure the AC voltage from terminal L2 to neutral on the North American cabinet.

-- Voltage should be in the nominal range of 115 to 120 Vac.

7b - Measure the AC voltage from terminal L2 to ground on the North American cabinet.

-- Voltage should be in the nominal range of 115 to 120 Vac.

! CAUTION

If the AC voltages measured (on the North American cabinet) in the following step exceeds 240 V

when measuring between terminals L1 and L2, STOP and DO NOT proceed until the cause of the

higher voltages are determined. The frame will be damaged if the Main breaker is turned on with

excessive voltage on the inputs.

- Measure from terminal L1 to terminal L2.

-- Voltage should be in the nominal range from 208 to 240 Vac.

8 Remove external AC power from the frame by setting the facility circuit breaker to OFF.

9 Install the ACLC front panel assembly and secure with the four screws removed in step 1.

10 Apply external AC power to the frame by setting the facility circuit breaker to ON.