Note. If the voltage reading on the dc
move the cable harnesses, test leads,
volts-millivolts meter (4, fig. 16) is excessive,
generator, and generator control box
check all cable connections from the gen-
from the test stand.
erator control box to the 150-ampere gen-
erator control box receptacles (1, fig. 15) to
assure that the connections are all clean
data on other models of generator control
and tight.
boxes.
Note. The key numbers shown below in parentheses in this section refer to figure 32 except where otherwise
indicated.
Section VII. TESTING GENERAL ELECTRIC COMPANY
150-AMPERE GENERATOR CONTROL BOX
Drop-out
5 volts (maximum)
121. Description
2 volts (minimum)
The General Electric 150-ampere generator
Coil resistance
69 ohms, plus or minus
control box (fig. 40) is designed for use with
10%
a generator that has a current output of 150-
(4) Differential and reverse current relay.
amperes (par. 117). The generator control box
0.3 to 0.7 volts (above
Pick-up
is composed of a series of control units which
battery voltage)
function in unison to regulate the output voltage
24 to 34 amperes (pre-
Drop-out
and limit the output current of the generator. It
ferred 30 amperes) re-
also automatically connects or disconnects the
verse current
generator to or from the electrical system de-
105 ohms, plus or minus
Coil resistance
pendent upon the need for, or ability of the
10%
generator to supply the electrical energy re-
quirements, therefore, maintaining a sufficient
(5) Voltage regulator.
output to keep the unit under charge at its
Voltage coil (red-
maximum electrical capacity and/or controls
5.40 ohms, plus or minus
green leads)
the output of the generator within allowable
10%
limits preventing a burned-out generator. The
Equalizer coil (brown-
individual control units and components used
0.4 ohms, plus or minus
black leads)
in the construction of the control box are listed
10%
Stack resistance (white
lead to stack adjust-
122. 150-Ampere Generator Control Box
ing screw end)
Less than 1 ohm with
Control Units Tests (General Electric)
coils not energized
a. Purpose. This test is performed to indicate
(6) Current regulator.
the functioning of the control units of the 150-
Data identical to (5)
ampere generator control box (fig. 40) and
above.
whether setting adjustments are required to the
(7) Voltage adjusting rheostat.
units so they perform in accordance with manu-
Rating
10 ohms, plus or minus
facturer's specifications.
10%, 3 watts
b. Tabulated Data.
Range
approximately 5 volts
(1) Manufacturer.
(8) Paralling relay.
General Electric Company
Coil resistance . . . . . .173 ohms, plus or minus
(2) Identifying number.
10%
7355925
Ordnance number
plus or minus 14%
Pick-up
(maximum)
(3) Line switch.
plus or minus 2 volts
400 amperes
Drop-out
Rating
(minimum)
16 volts (maximum)
Pick-up
