Single Exciter Voltage Adjustment - Westerbeke 5.0Kw BCDR Operator's Manual

5.0KW BC GENERATOR SINGLE PHASE
SINGLE EXCITER NO-LOAD VOLTAGE ADJUSTMENT
1. Remove the louvered metal plate, at the back of the
generator, covering the AC terminal connections and
the capacitor(s).
2. Start
the generator and allow it to run for approximately
five minutes so the engine can warm up. Make sure the
generator is operating without any equipment drawing
AC current from the generator (that is, shut off all .
electrical appliances). Make sure the engine's speed
(Hertz) is correct. Adjust the fuel throttle/speed linkage as
needed to obtain the correct engine speed before proceed-
ing.
3.
Referring to the AC load connections diagram below,
check the generator's no-load voltage by measuring the
voltage across the neutral lead and the hot lead with a
volt meter. Make sure you record this reading. The gener-
ator's no-load voltage is 115 - 124 volts at 60.5 - 61.5
Hertz.
If
the voltage output is higher or lower than specified,
proceed.
115V/5DHz
CD
CIRCUIT
BREAKER
•
N L1
L1
23DV/5DHz
L1
CIRCUIT
BREAKER
12DV/6DHz
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CIRCUIT
Ih'-+-:oM1 BREAKER
L1 N
L1
4. Shut off
the generator. Make sure the correct Hertz lead
(60 Hertz #6, or 50 Hertz #5) is plugged into the
capacitor(s).
A
WARNING:
Capacitors must be discharged
before handling as they store electricity and can
pack
a
potentially lethal charge even when discon-
nected from their power source.
NOTE: Simply cross the capacitor's two terminals with an
insulated (plastic handle) screwdriver. This will discharge
any excess electricity.
·A
WARNING:
00 not attempt to make
a
no-load
voltage adjustment while the generator is operating.
The capacitor can produce
a
400-500 volt charge.
Touching any wiring can produce
a
severe electrical
shock. In addition, attempting to make
a
no-load
voltage adjustment while the generator is operating
could cause your fingers to be caught in the
generator's rotor.
5. There are three plugs grouped for the right capacitor ter-
minal,
#7, :f#l"
and
#9. If
the generator's no-load voltage
is low, then disconnect the lower numbered plug and con-
nect the plug with the next higher number. If the genera-
tor's no-load voltage is high, then disconnect the higher
numbered plug and connect the plug with the next lower
number. Note that the plug presently connected to this
terminal may be anyone of the three plugs available.
6.
If
the generator's no-load voltage cannot be adjusted
because the voltage needs to be increased and the highest
numbered plug is already connected to the right terminal,
or the voltage needs to be lowered and the lowest num-
bered plug is already connected, then adjust the no-load
speed and check the capacitor ratings.
A
WARNING:
Make certain the insulating
covers on the unused leads are in place and
are NOT in contact with each other or in contact
with the generator's housing.
NOTE: THEn WIRE IS
SHOWN CONNECTED AS A
DEMONSnMnONOFHOW
THESE CONNECTIONS CAN
BE MADE.
5 BCD GENERATOR BACK END SHOWN
120V/60Hz
See the
ENGINE ADJUSTMENT
section in this manual for
ADJUSTING THE ENGINE SPEED.
Engines
&
Generators
49