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ELECTRICAL SYSTEMS
GENERATING SYSTEM
10-25
GENERATOR
I
I
---",
FIELD
RESISTANCES
BAT.
GEN.
~;t~~~~ ,-('7=-~=
,-----_
....
'
SERIES WINDING
/'-ooN'NJ'MH
SHUNT WINDING
CUTOUT
CURRENT
VOLTAGE
RELAY
REGULATOR
REGULATOR
/~----------sffi~s~~ThG--'
,
SHUNT WINDING
o
o
o
BATTERY
CHARGE INDICATOR
Figure I 0
-15-Generator
Regulator in Generating Circuit-1948 Models
•
rent-consuming units in operation require maxi-
mum output of the generator. When current
requirements are small, the voltage regulator
controls generator output. Either the current
regulator or the voltage regulator operates at
anyone time; both regulators never operate at
the same time.
c.
Voltage Regulator
The voltage regulator keeps the voltage in
the charging circuits at a constant value, there-
by regulating the charging rate of the genera-
tor in accordance with the requirements of the
battery and the current-consuming electrical
units in operation. When the battery is low, the
generator output is near maximum but as the
battery comes up to charge, and other require-
ments are small, the voltage regulator operates
to reduce the generator output, thereby pro-
tecting the battery from overcharge and pro-
tecting the electrical system from high voltage.
The voltage regulator consists of two wind-
ings assembled on the same core, an armature
and a set of contact points, and a fixed resist-
ance. The voltage winding consists of many
turns of fine wire connected so that generator
voltage is impressed on it
O
a t all times. The
series winding, having a few turns of heavy
wire, carries the generator field current direct-
GENERATOR
-_.-.'
FIELD
RESISTANCES
SHUNT WINDING
SERIES WINDING'---..III~,.:;;.~W.INH
'
.....
_--
CUTOUT
CURRENT
VOLTAGE
RELAY
REGULATOR
REGULATOR
,-----------------~
••
,
SERIES WINDING
"
SHUNT WINDING
,1/
o
o
o
BATTERY
CHARGE INDICATOR
Figure I 0-16-Generator Regulator in Generating Circuit-1949 Series 50-70
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