Components, Dc alternator, Dc voltage regulator – Generac 86640 User Manual
Page 85
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Section 9.1- STANDARD BATTERY CHARGING SYSTEM
Components
A DC ALTERNATOR supplies charging current to the
unit battery during engine operation, as regulated by a DC
VOLTAGE REGULATOR. The circuit is protected by a 30
amp FUSE.
DC Alternator
The belt driven, permanent DC alternator is part of the
engine governor. Maintenance on the DC alternator is limited
to replacement of defective parts. See Part 7, Section 7.1,
"MECHANICAL GOVERNOFT.
DC Voltage Regulator
The solid state DC voltage regulator is housed in an
aluminum heat sink. All components are buriedjn an epoxy
resin and the DC regulator is not repairable.
MB
m
DC regulator
Pin 1= charging output to battery (12.5-14.5 volts DC)
Pin 2= charging Input from DC alternator.
Pin 3= charging Inplut from DC alternator.
Pin 4= Not used (charging Indicator lamp)
Pin 5= sensing voltage from battery.
Figure 1. Battery Charging System
Page 9.1-1