MIL-PRF-27/364A
REQUIREMENTS: (When numbers in parentheses, i.e., (1-2) are used, they indicate the winding and
the extreme terminals of the winding.)
Electrical ratings:
Primary voltage at 400 ±20 Hz.
Wye connected:
(1-4): 115 V ac.
(2-4): 115 V ac.
(3-4): 115 V ac.
Secondary voltage: See table I.
Secondary current: See table I.
Working voltage (peak): 535 volts peak maximum.
Design and construction:
Dimensions and configuration: See figure 1.
Duty cycle: Continuous.
Case: Epoxy fiberglass.
Terminals: Solderable turret type.
Height: 0.28 ±.040 inch (7.11 ±1.02 mm).
Diameter: .090 ±.010 inch (2.29 ±0.25 mm).
Weight: 1.6 pounds, maximum.
Operating temperature range: -55C to +130C.
Altitude: 70,000 feet, maximum.
Terminal strength: MIL-STD-202, method 211, test condition A, 5 pounds.
Dielectric withstanding voltage:
At atmospheric pressure (each winding): 1,500 V rms.
At barometric pressure (each winding): 670 V rms.
Electrical characteristics: See table II.
Rated load: With rated voltage across the primary at 400 Hz, the secondary voltages and
currents shall be as specified in table I.
2
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