Westerbeke BTD 8.0 KW 60Hz Operator's Manual page 66

Optional Voltage Regulator
An optional solid-state voltage regulator (board #34410) is available for use with the BT series generators.
When installed, and the regulation switch is moved to the ELEC position, the regulator works together
with the standard compound transformer regulator to regulate the generator's voltage output. In the
ELEC mode, the regulator excitation to the group I exciter windings, and the transformer provides
excitation to the group 2 exciter windings.
Installation
I. The regulator is mounted using existing tapped holes in the generator's case. Use two (2) M4 x 0.7
rum screws, each 15 mm long, with lock washers to mount the regulator board.
2. Connect the 6-prong generator plug to the receptacle on the regulator board. Note: The plug is keyed
to engage the regulator receptacle in one direction. Check this and insert it correctly.
3. Before moving the selector switch to ELEC, ensure that the no-load voltage produced by the generator
is properly adjusted. The no-load voltage desired with the selector switch in the COMP position must be
slightly lower than the voltage desired with the regulator in the circuit.
(i.e. 120 volts 60 Hertz no-load voltage in COMP 116 - 118 volts for 50 Hertz 216 - 218 volts.)
4. With the no-load voltage adjusted in COMP move the selector switch to ELEC position. Adjust the
regulator potentiometer to bring the no-load voltage up to 120 volts at 60 Hertz and 220 volts at 50 Hertz.
The potentiometer adjustment must not be used to force the no-load voltage down.
Generator Frequency
Frequency is a direct result of engine/generator speed:
1800 RPM - 60 Hertz
1500 RPM - 50 Hertz
To change the generator's frequency, refer to the "Maintenance and Adjustments" section of this manual.
Load Connections
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 on the generator end. A diagram of the various AC
voltage connections is provided on the decal. The information on the decal is similar to the figure shown
on the following page.
The generator is a single-phase, reconnectable 120 Volts AC two-wire or
1201240
Volts AC three-wire at
60 Hertz; or 220 Volts AC two-wire at 50 Hertz. Refer to the "System Specifications" section of this
manual for ratings.
WESTERBEKE GENERATORS 64