MIL-PRF-62061D
3.3.2.2 Speeds and current. The generator shall meet the current and voltage
requirements at less than the maximum speeds specified below (see 4.5.2.2):
a) Cut-in speed at 28.5 ± 0.1 V at 0 A load (maximum speed allowable: 1425 rpm)
b) Minimum speed at 100 A at 28.5 ± 0.1 V (maximum speed allowable: 1550 rpm)
c) Minimum speed at 300 A at 28.5 ± 0.1 V (maximum speed allowable: 1825 rpm)
3.3.3 Interpole voltage. The voltage measured between the paralleling terminal (D) and
the negative terminal (E) shall conform to limits as specified on figure 2 (see 4.5.3).
2.15
2.10
2.05
2.00
1.95
1.90
UPPER AND LOWER LIMITS OF
INTERPOLE DROP WITH GENERATOR
LOAD OF 390 AMPS.
1.85
1.80
0
65
90
105
0
70
75
85
80
95
100
GENERATOR COOLING AIR TEMPERATURE - oF
FIGURE 2. Generator interpole voltage drop at 390 amp load vs generator cooling air
temperature.
3.3.4 Compounding. The field current shall always increase when the load is increased
(see 4.5.4).
3.3.5 Insulation resistance. The generator shall have a resistance of not less than
25 megohms, conductor to conductor and conductor to ground (see 4.5.5).
5
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