Westerbeke 4.5 BCG - BC Generator Single Phase; BC Generator Description; Circuit Breaker Function; Generator Internal Wiring Schematic

BC· ·GENERATOR··SINGLE·•PHASE
NOTE: WESTERBEKE reccmunefUisJhat th{followingge~eratortests
and adjustl'Ttents be peiformed by a qualifi.e<J tech.nician.
DESCRIPTION
The BC generator is a brushless. self~exdted generator which
requires only the driving force of the engine to produce an
AC output. The stator houses two sets of windings; the main
stator windings and the exciter windings. When the generator
is started, residual magnetism in the four rotating poles
induces a currentin the stator which then generates an even
larger current in the exciter windings; 'This mutual b,uild up
of cmrent in the four rotating poles and in the exciter
windings quicJ<ly reaches the saturation point of the
capacitor(s) and a regulated energy field is !hen maintained in
thestator. At the same time, this regulzited field produces a
steady voltage in the stator windings which can then be
drawn· off the generator's AC terrnina1s to operate AC
equipment. The generator is a single-phase, reconnectable
120 volt AC two-wire or 110 volt AC two-wire or 220 volt
AC two-wire, at 50 hertz. Refer to the SPECIFICATIONS
section ofthis manual for generator ratings. The generator's
data plate gives the voltage, current and frequency rating of
the generator. An AC wiring decal is affixed to the inside of
the louvered cover at the generator end. A diagram of the
various AC voltage connections is provided on the decal. An
Integral Conttoller(IC)is mounted inside the generator and
supplies a continuous DC charge to the generators starting
battery. when the generator is running. For more. information
see the1NTEGRAL CONTROUER DC CHARGER
section in this rmmual
A. 'ROTATING FIELD/AUXILIARY WINDINGS
WITH DIODES.
B. MAIN STAToR WINDINGS.
C. EXCITER WINDINGS AND CAPACITOR(S).
D. DC BATTERY:,CHAl3.GJNQ CIRCUIT WITH
BRIDGE RECTIFlfR ANO INTEGRAL
CONTROLLER~ . . . .
Circuit Breaker
A circuit breaker is installed on all single phase
WESTBRBEKE generators. This circuit breaker will
automatically disconnect generator power in case of an
electrical overload. The circuit breaker can be manually shut
off when s~rvicing the generator 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
WESTERBEKE dealer.
60 Hz · 4.5 Kw Circuit Breaker Part Number 42232
50 Hz - 3. 7 Kw Circuit Breaker Part Number 42712
35
6 ~·A
s 2 6
0 0 0
DUAL EXCITER CIRCUIT