High Voltage Fault Adjustment

TM 11-6130-377-14

A1A2R34 (A1A2R15) until DC circuit breaker A1CB1

c. Install the variable DC power source at the DC

trips.

input terminal board as shown in figure 6-2.

h. Raise the input voltage to 110 vdc and reset the

d. Locate potentiometer A1A2R37 (A1A2R30) on

DC circuit breaker A1CB1.

the inverter drive circuit board (fig. FO-3).

i. Repeat procedure given in g above to verify the

Rotate the adjustment tab of the potentiometer

low voltage trip setting has been obtained.

so that it is pointing toward the transformer.

j. Repeat performance verification procedure

e. Set the variable DC power source to 110 vdc

(para. 6-22) and readjust as necessary until

and position the DC circuit breaker A1CB1 to ON.

performance is verified.

f. Raise the input voltage to 142 vdc.

g. Turn the adjustment tab of potentiometer

6-24. High Voltage Fault Adjustment

A1A2R37 (A1A2R30) until DC circuit breaker A1CB1

Adjust the high voltage trip point of the DC circuit

trips.

breaker A1CB1 as follows:

h. Lower the input voltage to 110 vdc and reset the

a. Position the DC circuit breaker A1CB1 to OFF,

DC circuit breaker A1CB1.

open front indicator panel to gain access to the inverter

i. Repeat procedure given in e and f above to

drive circuit board A1A2 and the DC input terminal

verify the high voltage trip setting has been obtained.

board A1TB1.

j. Repeat performance verification procedure

b. Pull out the plunger of the door interlock switch

(para 6-22) and readjust as many times as necessary

A1Sl to enable the inverter to function with the front

until performance is verified.

Change 1

6-19