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MIL-PRF-46795 Generating System: Alternator, Rectifier, 60 Amperes, 28 VoltsThis specification covers 28 volts \(V\), direct current \(dc\) generating systems, engine driven through belt or direct connection, to provide 60 amperes \(A\) for charging and operating loads. The system consists of a rotating field alternator with integral diode rectifier and adjustable voltage regulator in a single housing. This specification also covers repair parts for this system.

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MIL-PRF-46795H
RPM
A
a.
2500 + 50
0-4.5
2500 + 50
60
2500 + 50
0-4.5
2500 + 50
30
2500 + 50
0-4.5
2500 + 50
45
b.
6000 + 120
Same sequence as in a.
c.
10 000 + 200
Same as in a.
NOTE: Change in load resistance shall be accomplished in 10 milliseconds (ms) maximum time.
4.8.2.1 Voltage regulation - acceptance test. All generating systems furnished under this
specification shall be operated in ambient air temperature of 77 + 15F (25 + 8.3C) with frame
temperature non-stabilized through the following cycle of speeds and loads:
RPM
A
a.
2500 + 50
0-4.5
b.
2500 + 50
60
c.
10 000 + 200
0-4.5
10 000 + 200
d.
60
During this procedure, generating system shall conform to 3.4.2.2.
24 VOLT BATTERY
SW3
V
RECTIFIER AC
A1
GENERATOR SYSTEM
SW1
IGN
A2
SW2
LOAD BANK
NOTE: A=AMMETER
AC=ALTERNATING CURRENT
IGN=IGNITION
SW=SWITCH
V=VOLTMETER
FIGURE 3. Generator system connected in circuit.
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