The
voltage
regulator
is
designed to
supply
field currents
of
up
to 8 amps
for
short periods, Typically,
two
alternators
connected
in parallel and supplying
a total
of 60 amps to the load, will
require
less than
2
amps total
field
current for
correct operation.
This
re-
quirement
is
well within the
capabilities
of the regulator. In
order
to
provide protection
for the
regulator
in
the
event of a field connection
to
ground
short,
fuses should be
inserted
between regulator
pin
B and
the alternator field windings.
Recommended
fuse
types
are 2
amp, fast
blow, one in each
field
lead.
Figure
2-1
shows
a
diagram of
a
typical
installation.
BATTERY
- -
CONTACWR
FIG.
2-1
TYPICAL
IN$TALLATION
GROUND
GROUND
LA.
RÍENNÄÏOR R.H. ALTERNATOR
2 MP
2¾
EÙT-BLOW
FET-E
OW
GROUND
f~T1
r¯l
A
F
H
J D
B E
O 1
C BENDIX
MS-3102A-18-lP
OECO ÒDRPORATIOÑ
NÒLTAGEREGULATOR
MOOEL
20138
The
model
20138
voltage
regulator
is designed to
operate over
an ambient temperature
range
of
-36°C
to
+72°C,
and to
an altitude
of
30,000 feet
maximum.
A
list
of specifications follows
in
Section
2-2.
2-2
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