User Manual

AC Power Up Sequence68P09255A57-2

Aug 2002

SC4812ET Optimization/ATP Manual Software Release R16.1.x.x

PRELIMINARY

2-7

Power Cabinet Power Tests

Table 2-5 lists the step-by-step instructions for Power Up Tests.

Table 2-5: Power Cabinet Power Up Tests

Step Action

1 Probe the output voltage test point on the Meter Alarm Panel while pressing the 25° C set button on

the TCP (see Figure 2-4). The voltage should read 27.4 +

0.2 Vdc. Adjust Master Voltage on Meter

Alarm Panel if necessary. Release the TCP 25° C set button.

2 Depending on the ambient temperature, the voltage reading may now change by up to + 1.5 V

compared to the reading just measured. If it is cooler than 25C, the voltage will be higher, and if it is

warmer than 25C, the voltage will be lower.

3 Ensure the RF cabinet 400A main DC breaker is OFF.

4 Close the three (3) Main DC breakers on the Power Cabinet ONLY. Close by holding in the reset

button on the front of the PDA, and engaging one breaker at a time.

5 Measure the voltage between the + and - terminals at the rear of the Power Cabinet and the RF

Cabinet, observing that the polarity is correct. The voltage should be the same as the measurement in

step 2.

6 Place the probes across the black and red battery buss bars in each battery compartment. Place the

probe at the bottom of the buss bars where the cables are connected. The DC voltage should measure

the same as the previous step.