Generator Voltage Adjustment - Westerbeke 8.0KW - 60Hz Operator's 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 steps below.
a. Connect the AC output leads to the AC terminal block,
following the illustrations on this page.
h. If an AVR is installed, reposition the blue or blue/white
lead to correspond to the hertz selected on the
Voltage!Hertz Connection Bar.
If there is no antomatic voltage regulator (AVR
installed, do not change the wiring on the
Voltage/Hertz Connection Bar. Simply reconfigure the
AC terminal 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, the 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 transfonner.
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 - 11 0 volts
50 hertz: 205 - 210 volts
SIX STUD AC VOLTAGE CONNECTIONS
115V50Hz
®
@
The frame ground wire must
be moved when changing
from 115 volts and 1101220
volts 50 hertz to 230 volts
50 hertz. From making con-
nections to the AC tenninal
block, use tenninal ends for
1/4 inch studs that wiD
accept
multi-strand
copper
wire sized for the amperage
rating from the hot lead
con-
nection. The frame ground
wire is white or white with a
green strip. It connects
between the neutral stud
and the generator frame.
230V50Hz
®
@
120V 60HZ
A JUMPER IS III~_-.J
REQUlRED'-1gg]
TWELVE STUD AC VOLTAGE CONNECTIONS
115V 50Hz
a:::::o
0
6 6
1'!;;jb!jJCIRCUIT
l!::::i
BREAKER
230V50Hz
a::::::::D
0
N l1
OJ
115/230V 50Hz
a:::::o
0
I"
"1
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• •
Engines & Generators
39
120V:O Hz
o a:=:o
A JUMPER IS
REQUIRED
120/240V 60HZ
•
120/240V/60Hz
L1
• •
l2