Opening voltage . . . . . .3.5 to 9 volts
so they perform in accordance with manufac-
200 ohms, plus or
C o i l resistance
turer's specifications. Refer to TM 9-8631 for
minus 10%
data covering setting adjustments.
(8) Line switch.
b. Tabulated Data.
Contact rating . . . . . . . .200 ampere
(1) Manufacturer.
0.10 volts
C o n t a c t drop
Bendix Eclipse Pioneer
(maximum)
(2) Identifying number.
Closing voltage . . . . . .19 volts
(maximum)
Type 40E27 model
Model number
9 volts
H o l d i n g voltage
1 style B
(maximum)
7528304
O r d n a n c e number
59 ohms, plus or
C o i l resistance
(3) Voltage regulator.
minus 10%
28 volts
Normal voltage rating
(9) Variable resistors.
Voltage adjustment by
Paralleling potentiometer
26 to 27 volts
means of rheostat
(if used)
3 ohms, 3 watts
Maximum power dissipa-
3 ohms, 3 watts
Voltage adjusting rheostat
75 watts a 71 F
tion in the carbon pile
(10) Fixed resistors.
4.13 ohms, plus or
Shunt coil resistance
Stabilizing
350 ohms, 5 watts
minus 5%
Parallel
0.4 ohms, 10 watts
Equalizer coil resistance
0.144 ohms, plus or
250 ohms, 10 watts
Pilot relay coil
minus 5%
150 ohms, 10 watts
Parallel relay coil
(4) Current regulator.
c. Preparation.
150 amperes
Normal setting
(1) Turn all selector switches beneath the
(5) Polarized relay assembly.
meters on the test stand to the maxi-
Pilot relay:
mum reading position, all rheostats
20 to 25.5 volts -
Closing voltage
fully counterclockwise, and all on-off
preferred 22
toggle switches to "OFF" position
volts
(some toggle switches have center
13 to 16 volts -
Opening voltage
positions as "OFF") (fig. 32).
preferred 16
(2) M o u n t a 150-ampere generator of
volts
k n o w n serviceable condition (par.
10 ohms, plus or
Coil resistance
118) on the low speed driving head
minus 10%
(5, fig. 7) (par. 94).
(6) Differential and reverse current relay
(3) Calibrate the tachometer indicator
assembly.
Closing voltage . . . . . . . . .0.5 volts, plus or
minus 0.4 volts
(4) Connect the generator to the genera-
Opening current
tor input binding posts (13, fig. 15)
(amperes)
10 to 35 amperes,
of the test stand, as shown in figure
preferred 20
amperes reverse
harnesses (figs. 71 and 74).
current
(5) Connect a connecting link (fig. 65)
Differential coil resistance
4.4 ohms, plus or
b e t w e e n "B-" and "G-" regulator
minus 10%
binding posts (10, fig. 15) as shown
Reverse current coil
in figure 38.
2.6 ohms, plus or
resistance
(6) M o u n t the 150-ampere generator
minus 10%
control box undergoing test on the
control box mounting plate (number
(7) Paralleling relay.
3144 (fig. 69) ) and bolt it to the regu-
Closing voltage . . . . . . . . .9 to 16 volts
80
