Westerbeke 5.0Kw BCDR Operator's Manual page 51

5.0KW Be GENERATOR SINGLE PHASE
DESCRIPTION
The BC generator is a brushless, self-excited 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 current in the stator which then generates an even
larger current in the exciter windings. This mutual build up
of current in the four rotating poles and in the exciter wind-
ings quickly reaches the saturation point of the capacitor(s)
and a regulated energy field is then maintained in the stator.
At the same time, this regulated field produces a steady
voltage in the stator windings which can then be drawn off
the generator's AC terminals to operate AC equipment. The
generator is a single-phase, reconnectable 120 volt AC two-
wire or 120/240 voltAC three-wire, at 60 hertz; or 110 volt
AC two-wire or 230 volt AC two-wire, at 50 hertz. Refer to
the SPECIFICATIONS section of this 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 Controller
(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 the INTEGRAL CONTROLLER
DC CHARGER section in this manual.
Circuit Breaker
A circuit breaker is installed on all single phase
WESTERBEKE generators. This circuit breaker will
automatically disconnect generator power in case of an
electrical overload. The circuit breaker can be manually shut
off when servicing the generator to ensure that no power is
corning into the generator.
NOTE:
This circuit breaker is available as a
WESTERBEKE
add-on kit for earlier model generators; contact your
WESTERBEKE
dealer.
60 Hz - 5.0 KW Circuit Breaker Part Number 42238
50 Hz - 4.0 KW Circuit Breaker Part Number 42704
CIRCUIT BREAKER
D
GENERATOR INTERNAL WIRING
SCHEMATIC WITH DC BATTERY
CHARGING CIRCUIT
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A. ROTATING FIELD/AUXILIARY WINDINGS
WITH DIODES.
B. MAIN STATOR WINDINGS.
C. EXCITER WINDINGSAND CAPACITOR(S).
D. DC BATTERY CHARGING CIRCUIT WITH
BRIDGE RECTIFIER AND INTEGRAL
CONTROLLER.
CAPACITOR
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'-________ ----....I
B
AC TERMINAL BLOCK
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DUAL EXCITER CIRCUIT
Engines & Generators
46