11-1 Wiring Schematics
450 LXi
Owner Manual
~ 11-1-98 ~
Rev. “C”
Wiring Schematic 0089321 - Schematic, Wiring, Generator Sys, 120/240Vac - Page 3 of 3
AVC63-4 VOLTAGE REGULATOR
"M" SERIES - EXCITER TYPE
POWER TECH 120V/240V CONNECTION
FIELD
DC STATOR
EXCITER
U/F
FREQUENCY\PSELECTOR\PPIGTAIL
60HZ
EXCITER FIELD
#16 WHT
VOLT
STAB
OUTPUT 63VDC 4A
50/60HZ 500VA
VOLTAGE REGULATOR
AC
IN
INPUT 190-240VAC
4
50HZ
7
6
AVC63-4
#16
WHT
C
F+
C
F+
F-
E4
3
#16
WHT
F+
CB5 2.5A
FIELD
GENERATOR
E4
AC IN
T4
E1
GENERATOR STATOR ASSY
GENERATOR ROTOR ASSY
RECTIFIER
ROTATING
AC ARMATURE
3-PHASE
EXCITER
BRIDGE
WINDING FOR
120 VAC STATOR
AUXILIARY
ALTERNATOR
ALTERNATOR
WINDING
STATOR
120 VAC
PHASE A
ROTOR FIELD
4-POLE DC
ALTERNATOR
#16 WHT
T3
T2
T1
T4
CB4 20A
T1
#14 WHT
#14 BLK
#14 WHT
#8
BLK
#8
BLK
#8
BLK
#8
BLK
WINDING
ALTERNATOR
STATOR
120 VAC
PHASE B
CB3 20A
CB2 80A
CB1 80A
GND
NEUTRAL
T3
LINE
LINE
T4
T1
#14 BLK
LOAD
LOAD
GND
GND
NEUT 2
NEUT 1
FAN 2
GEN BOX
MOTOR
FAN
MOTOR
FAN
J-BOX AT RADIATOR FAN
INSTALLED
BLUE BIRD
#8 GRN
#4 GA WHT
FAN 1
GND
NEUT
#4 GA RED
#4 GA BLK
L2
L1
RADIATOR
TRANSFER
CONDUIT TO
L1
L3
L0
#16
WHT
#16
WHT
#16 WHT
E1 &E4 WIRES
SEPARATELY
TAPED & ISOLATED
PROCEDURE TO CONVERT 120V CONNECTION
TO 120/240V CONNECTION WITH AVC63-4
VOLTAGE REGULATOR:
1. REMOVE L1-L3 JUMPER WIRE.
2. DISCONNECT E1 & E4 CONNECTIONS. SEPARATELY
TAPE & ISOLATED EACH WIRE.
3. RECONNECT T3 TO CHASSIS GROUND.
4. RECONNECT T4 TO L3.
5. RECONNECT T1 TO L1.
6. CONNECT WIRE FROM L1 TO TERMINAL 3 ON
VOLTAGE REGULATOR.
7. CHANGE CB5 FROM 4A TO 2.5A.
MAIN
BREAKERS
FAN
BREAKERS
SWITCH
BAY-5
BAY-5
#14 GRN
(PHASE A)
(PHASE B)
(PHASE B)
(PHASE A)
PHASE A
PHASE B
120VAC
120VAC
NOTE:
THE EXCITER & BRIDGE RECTIFIER
PROVIDE DC MANETIZING CURRENT
FOR THE ALTERNATOR'S ROTOR
FIELD WINDING.
NOTE:
WEAKENED BY A MOMENTARY
FIELD POLES MAY BE LOST OR
RESIDUAL MAGNETISM OF EXCITER
FIELD WINDING REVERSAL OR A
LONG PERIOD OF NON-OPERATION.
RESISTANCE
23-28 OHMS.
ARMATURE
RESISTANCE
650-720 OHMS
PER PHASE.
EXCITER FIELD
ROTOR FIELD
RESISTANCE
2.1 OHMS.
STATOR
RESISTANCE
LESS THAN
1 OHM PER
PHASE.
NOTE:
VOLTAGE REGULATOR MAINTAINS
OUTPUT VOLTAGE OF 240VAC.
USER MUST BALANCE THE PHASE
LOADS TO MAINTAIN 120VAC PHASE
VOLTAGE.
J-BOX AT GEN BOX FAN
GENERATOR 120VAC POWER CONNECTIONS
240VAC
INACTIVATES NOS.
LET.
WAS
REVISIONS
DR.
APP.
CCN
SCALE
BLUE BIRD CORPORATION
FORT VALLEY GEORGIA, U.S.A.
CCN
DR.
APP.
BY
BY
D
PAGE
__OF__
1
2
3
4
5
A
B
C
D
E
F
G
H
6
7
0089321
SCHEMATIC,WRG,GENERATOR SYS,120/240VAC
03/10/05
12/02/05
RK
RK
13177P
NONE
3
3
M450LXI
CONFIDENTIAL
The information hereon is confidential
business information and may not be copied
or used for any purpose unless permission
is expressly granted in writing by
Blue Bird Corporation.
Copyright 2004
Blue Bird Corporation
All rights reserved
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