Specifications
THE
BE
GENERATOR
SINGLE
AND
THREE
PHASE
DESCRIPTION
This generator is a four-pole, brushless, self-excited genera-
tor which requires only the driving force of the engine
to
'pro-
duce AC output. The copper and laminated
iron
in
the exciter
stator are responsible for
the
self-exciting feature of this gen-
erator. The magnetic
field
produced causes
an
AC voltage
to
be induced into the related excitor rotor windings during
rotation. Diodes located
in
the exciter rotor rectify this volt-
age to
D<;;
and supply
it
to
the windings of the rotating field.
This creates
an
electromagnetic field which rotates through
the windings of the
main
stator, inducing
an
AC voltage
which is supplied to a load.
An AC voltage
is
produced
in
the
auxiliary windings
of
the
main
stator
and
is,
in
turn, supplied
to
a voltage regulator. The regulator produces a DC voltage
to
further excite the exciter stator windings, enabling
the
gen-
erator
to
produce a
rated
AC output. The voltage regulator
senses AC voltage output
and
adjusts DC excitation
to
the
exciter stator winding according
to
amperage load the gener-
ator is furnishing.
To
maintain a constant voltage output.
INTERNAL
WIRING
SCHEMATIC
CIRCUIT
BREAKER
A circuit breaker is installed
on
all
WESTERBEKE genera-
tors. This circuit breaker will automatically disconnect gener-
ator power
in
case of
an
electrical overload. The circuit
breaker can be manually shut off
when
servicing the genera-
tor
to
ensure that no power is coming
into
the boat.
NOTE:
This circuit breaker is available
as
a WESTERBEKE
add-on kit for earlier model generators; contact your
WEST-
ERBEKE
dealer.
3
PHASE
TWELVE
WIRE
RECONNECTABLE
r------,
I C I
r--------,
I '
: STATOR I
!
I
1'2
r+_--~2~-+!-------4:11
CIRCUIT
BREAKER
PART
NUMBERS
EXCITER r - - - + - - - - - - -
-,
I A I J B J
I I I ROTOR I
L-j:~_3
--.1:I--~-:
1~
0
LJ:
___
4
__
H:I-----.:
~
Te~nal
20
KW
-
60
Hz
NO.
42701
[16
KW
-
50
Hz
NO.
427181
I + I a
l
Sl) I
I
:1
~!
-1* 4
3:
I b I
I
1:
2 I
I I I I
.1
L
___
+
_____
'
__
..l
'L
REGULATOR
4i:
~5i;;;::===:::
~
Block
25
KW
-'-
60
Hz
NO.
42702
[20
KW
-
50
Hz
NO.
427111
:
6:
:
~
~!~~~~~~~!:=======.:
2
7 1
:
rlllliS_1i
I
...
,
FUSE
6.3
AMP
Engines & Generators
43
A. EXCITOR
32
KW
-
60
Hz
NO.
42703
[25
KW
-50
Hz
NO.
T 0
B1
1.
Exciter Stator Windings
B.
ROTOR
1.
Auxiliary Windings a.b.c.
2.
Diodes
3. Main Rotor Windings
4.
Pozi
Resistor
C.
MAIN
STATOR
1.
Auxiliary Windings
2. - 7
Main
Stator Windings
3. Auxiliary Windings
(AC
to
Regulator)
D. AC TERMINAL
BOARD
E.
REGULATOR