Voltage Sensing Transformer
Equal Power Distribution
4. Remove complete voltage regulator N2 (6):
Record labeling and position of cables and remove cables from terminals (9) on voltage regulator N2 (6).
Remove two nuts (8) and remove voltage regulator N2 (6) from bolts (7). Discard nuts (8).
Perform ADJUSTMENT procedure after replacing parts.
If a circuit board is defective:
Remove defective circuit board (16 to 19) from voltage regulator housing (10) and insert new circuit board.
If transistors are defective (3 x 2N3773, mounted on housing):
Remove all circuit boards (16 to 19) from voltage regulator housing (IO).
Replace voltage regulator housing (10) and reinsert circuit boards (16 to 19).
1. Adjust equal power distribution TT1310-./01:
Use potentiometers (figure 5-28) to adjust power distribution:
full clockwise (maximum 18 turns), then 9 turns back
full clockwise (maximum 18 turns), then 9 turns back.
do not adjust (factory preset).
2. Adjust linear regulator TT1310-./01 :
Connect load bank to generator set and perform procedures in paragraph 5.53.
Remove cover panel socket terminals L1 to L3 and N in control cabinet as instructed in paragraphs 5.24.
Connect X/Y-printer to threaded pins of terminals L1, L2, L3 and N.
d. Preset potentiometers (figure 5-28).
full counterclockwise (maximum 18 turns), then 9 turns back.
Start up Generator Set 150 kW as instructed in paragraph 2.5.1.
f. Optimize control characteristics:
while switching load OFF and ON, observe excursion printed on X/Y-printer and adjust for
Shut down Generator Set 150 kW as instructed in paragraph 2.5.2