User Manual

Initial Power Up – continued

08/15/2000

2-9

SC 4812ETL BTS Optimization/ATP

PRELIMINARY

Table 2-4: Pre–power DC Power Distribution System Test

Step Action

13 Seat the Pilot Beacon, Heat Exchanger, ETIB, and Options circuit breakers to ON one at a time.

Repeat step 5 after pushing in each circuit breaker.

14 Set all DC PDA circuit breakers to OFF (pulled out).

Applying AC Power

Once AC voltage measurements are complete, apply AC power to the

Power Cabinet. Table 2-5 provides the procedure for applying AC

power.

Table 2-5: Applying AC Power

Step Action

1 After cabinet AC input voltages are verified as correct, turn the Main AC breaker (located on the front

of the AC Load Center) ON. Observe that all eight (8) green LEDs on the front of the ACLC are

illuminated (see Figure 2-4).

2 On the ACLC, Turn RECT. 1 and RECT. 2 AC branch breakers ON. All the installed rectifier

modules (see Figure 2-3) will start up, and the green DC and PWR LEDs should light on each.

3 Turn the Meter Alarm Panel module, ON (see Figure 2-6). The Meter Alarm Panel voltage meter

should read approximately 27.4 +

0.2 VDC.

4 Turn the Temperature Compensation Panel (TCP) ON, (see Figure 2-7). Verify that the Meter Alarm

Control Panel does not have any alarm LEDs illuminated.

5 Check the rectifier current bargraph displays (green LED display on the rectifier module). None

should be illuminated at this point.

If batteries are fitted, turn on the two battery heater AC

breakers on the AC Load Center.

NOTE

Figure 2-6: Meter Alarm Panel

OFF

VOLT

–

TEST POINTS

AMPS

–

TEST POINTS

AMP

PWR

FRONT VIEW