Westerbeke 29.0 EGED 60Hz Operator's Manual page 42

ELECTRONIC REGULATION- AVR
CONTROL PANEL
REFER TO THE COMPLETE
WIRING DIAGRAM #52951
IN THIS MANUAl.
TERMINAL BLOCK
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Hertz: With this potentiometer, which is normally
pre-calibrated then sealed by the manufacturer, it is. possible
to adjust the low frequency protection intervention. To.
recalibrate tlus protection, you must take the generator'to a
normal zero load condition, tum the potentiometer
clockwise until the limit position is reached, then decrease
the nominal speed by 10 %. Then turn the potentiometer
counterclockwise and measure the voltage value until it has
decreased by 5 volts.
TERMINAL BL()CK CONNECTIONS
SHOWN ARE CONFIGURED fOR
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190/208 VAC
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When the speed decreases by more than 10% of the nominal
value, the voltage also decreases proportionally, blocking
generator overheating. Even ifwe.,advise calibrating this.
protection at 10% of the nominal value, it is obviously
possible to calibrate the threshold at other values. ·
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Amp: With this potentiometer, it is possible to adjust the
intervention level of the overload protection. This protection
system has an intervention delay, which permits a temporary
overload, necessary when starting motors or similar
applications.
To modify tlus protection, you must overload the generator
by 15% of the normal load, tum the potentiometer
to
minimum (counterclockwise) and wait about twenty seconds.
During this period of time the voltage value decreases. In this
condition and while turning the potentiometer clockwise, fix
the generator voltage value at 10% less than the nominal one.
At this point, while the initial overload is being removed, the
voltage increases to the nominal value.
Fuse: The electronic regulator is equipped with a fuse, which
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Breaker
DC Field
protects the alternator from overheating in cases of regulator ....,..~- --.
malfunction. The fuse (250V.:.5A, quick acting, F type) can be
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replaced easily.
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50Hz
VOLTAGE REGULATOR
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Generators
36
JNTEBNAL WIRING DIAGRAM
12 ·wiRE RECONNECT ABLE
WITH SR7·2G AVR
.