Installation manual
GENERATOR
VOLTAGE
ADJUSTMENT
NOTE:.
WESTERBEKE recommends that the following generator
tests
and
adjustments be peiformed by a quailified technician.
Generator
Frequency
1.
Frequency is a direct result
of
engine/generator speed:
1800 rpm = 60 hertz
1500
rpm=
50 hertz.
2.
To
change generator frequency follow the sfeps below.
a. Connect the AC output leads to the AC terminal block,
following the illustrations on this page.
b.
If
an
AVR
is installed, reposition the blue
or
blue/white
lead to correspond to the hertz selected on the
Voltage/Hertz Connection Bar.
H there
is
no
automatic
voltage
regulator
(AVR
installed,
do
not
change
the
wiring
on
the
Voltage/Hertz Connection Bar.
Simply
reconfigure
the
AC tenninal
for
the
hertz
change.
c.
Start the engine, monitor voltage and adjust engine
no-load speed. Adjust diesel units by the linkage
between the throttle arm and fuel solenoid or the
throttle lever on the injection pump
..
60 hertz: no-load speed,
61.5-
62.0 hertz.
50 hertz: no-load speed,
51.5-
52.0 hertz.
d. After the no-load hertz adjustment is made,
lht: no-load
voltage may need to be readjusted. In most cases, if the
generator was producing the correct no-load voltage at
the previous hertz setting, it would be correct at the
changed hertz setting.
In the event it needs adjustment, adjust the shim thick-
ness under the laminated steel bar
of
the transformer.
60 hertz: no-load voltage, 121-124 volts.
50
hertz: no-load voltage, 232-236 volts.
e. Load the generator to the rated amperage output
corresponding to the hertz speed
of
the generator.
Rated Loaded
Speed
60
hertz: loaded speed,
58.5-
59.0 hertz
50
hertz: loaded speed,
48.5-
49.0 hertz
The lowest acceptable voltage at full rated output
(amps)
60 hertz: 108 - 110 volts
50
hertz:
205-
210
volts
SIX
STUD
AC
VOLTAGE
CONNECTIONS
115V
50Hz
® ®
The
frame
ground
wire
must
·
be
moved
when
changing
from
115
volts
and
11
Ofl20
voils
50
hertz
to
230
voils
50
hertz.
From
making
con-
nectlons
to
the
AC
tenninal
block,
use
tenninal
ends
for
1/4
inch
studs
that
will
accept
multi-strand
copper
wire
sized
for
the
amperage
mtlng
from
the
hot
lead
con-
nectlon.
l11e
fmme
ground
wire
Is
white
or
white
with
a
green
strip.
It
connects
between
the
neutral
stud
and
the
generator
frame.
•I
230V
50Hz
120V
80HZ
·®
®
~.
TWELVE
STUD
AC
VOLTAGE
CONNECTIONS
115V
50Hz
cc:::D
o·
6 8
L1
CIRCUIT
BREAKER
230V50Hz
a:::o
0
6 6
8
••I
~
&=A
N
L1
w
Engines & Generator$
39
\J~MPERIS
REQUIRED
120J240VJ60Hz
L1
l2