MULTIQUIP DCA Series - Page 15

GENERATOR SERVICE AND TROUBLESHOOTING MANUAL — REV. #0 (08/29/23) — PAGE 15
GENERATOR THEORY
W1
U1 V1
U2 V2
W2
X Y Z
Fg
ROTOR
Ar
Ex
Fg
Ex
Ar
RE
AUX. EXCITER
WINDINGS
A
B
C
D
J
K
U
V
W
Automatic Voltage Regulator (AVR)
1 3
RHEOSTAT
U
V
W
OUTPUT TERMINALS
BUSS BAR
CN1
CN4
CN3
1
3
2
O
MAIN
3-POLE
BREAKER
1
1
NOTE:
DCA150 GENERATOR MODELS AND BELOW
USE A VOLTAGE SELECTOR SWITCH.
DCA180 GENERATOR MODELS AND ABOVE
USE A VOLTAGE CHANGE-OVER BOARD.
2
2
A
D
C
B
Figure 11. AVR Wiring Diagram