Bt Generator Single Phase - Westerbeke 10.0 EGTD Operator's Manual

BT GENERATOR SINGLE PHASE
OPTIONAL AUTOMATIC VOLTAGE REGULATOR (AVR)
BT 6 STUD MODELS ONLY
An optional solid-state voltage regulator (board #3441 0)
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 com-
pound transformer regulator to regulate the generator's volt-
age output In the ELEC mode, the regulator provides
excitation to the groupl exciter windings, and the trans-
former provides excitation to the group 2 exciter windings.
Installation
1.
The regulator
is
mounted using existing tapped holes in
the generator's case. Use two (2) M4 , 0 7mm screws,
each 15mm long, with lock washers to mount the regula-
tor 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
comctly.
3. Before moving the selector switch to the ELEC position,
the NO-Load voltage produced by the generator when
in
the COMP position will have to
be adjusted. The NO-
Load voltage should be adjusted down between 114 - 118
volts (60Hz) or 224 - 228 volts (50Hz) following the
procedures as explained earlier
in this manual.
4. With the generators no load voltage properly adjusted, ·
move the selection switch into the ELEC position. Adjust
the regulator board potentiometer to set NO-Load voltage
at 120- 122 volts
at
61.5- 62.0 Hertz (230- 234 volts at
51.5 - 52.0 Hertz). The regulator board is operating in par-
allel with the compound transformer and should maintain
voltage output within ±5
per cent from NO-Load to
FULL-Load.
NOTE:
Do not use the regulator to force NO-Load voltage
down. Use the compound transformer for this junction. Using
the regulator to peiform this causes the regulator to use more
exciter circuit power. This leaves less exciter circuit power
for loaded conditions. ·
Switching Shore Power to Generator Power
A
CAUTION: Heavy motor leads should be shut off
before switching shore power to generator power or
vlcB-versa because voltage surges indut:ed
by
switch·
ing
with
heavy AC loads on the vessel being operated
may cause damage to the exciter circuit components in
the generator.
BT GENERATOR TROUBLESHOOTING CHART
· NOTE:
WESTERBEKE recommends
that
the following generator
tests
and adjustments be peiformed
by
a qualified technician.
LOW VOLTAGE 60-I 00 VOLTS AC
COMPONENT CHECKS:
·F
SELECTOR SWITCH
(6 Stud Models)
8
ROTOR COMPONENTS
82. EXCITER ROTOR DIODES
83. ROTOR FIELD WINDING
B1. EXCITER ROTOR WINDING(S} a,b,c.
A
1-1+2 ExCITER STATOR WINDING(S).
NO AC VOLTAGE OUTPUT
MAIN STATOR, ROTOR COMPONENTS, TRANSFORMER
COMPONENT CHECKS:
C
1+2 MAIN STATOR WINDING
8
4 POSI RESISTOR
8
2 DIODES (4-6 OPEN/SHORTED)
D
1.+2 COMPOUND TRANSFORMER WINDING
8
3 ROTOR FIELD WINDING
RESIDUAL VOLTAGE EXCITER CIRCUIT FAULTY
COMPONENT CHECKS:
A
1·1+2 EXCITER STATOR WINDING(S)
G
BRIDGE RECTIFIER
D
3 TRANSFORMER AUX. WINDING
C
3 MAIN STATOR AUX. WINDING
F
SELECTOR SWITCH
CIRCUIT CONNECTIONS (from the Transformer Aux. winding to the
connections on the Bridge Reclif~er)
Engines
&
Generators
35