MIL-PRF-27/352E
REQUIREMENTS: (When numbers in parentheses i.e (1-2) are used, they indicate the winding and the
extreme terminals of the winding.)
Electrical ratings: See table I.
Primary voltage (1-2): 115 volts ±10 percent, 400 hertz ±5 percent.
Working voltage: 357 volts, rms, maximum.
Design and construction:
Dimensions and configuration: See figure 1.
Weight: .52 pound, maximum.
Duty cycle: Continuous.
Case: Epoxy fiberglass or diallyl phthalate.
Altitude: 70,000 feet, maximum.
Operating temperature range: -55°C to +130°C.
Terminals: Feedthrough.
Terminal height: 0.23 inch, maximum.
Terminal strength: MIL-STD-202, method 211, test condition A, 5 pounds.
Dielectric withstanding voltage:
At sea level: 1000 volts, rms.
At reduced barometric pressure: 1.25 times the peak working voltage specified.
Electrical characteristics:
No load: With 115 volts, 400 hertz across (1-2); current in (1-2) shall not exceed 30 milliamperes rms.
Rated load: With 115 volts, 400 hertz across (1-2) and a resistive load with current as specified in
table I in (3-4), the voltage across (3-4) shall be as specified in table I.
Efficiency: 90 percent minimum at rated load.
Polarity: Additive with terminals 2 and 3 connected.
Voltage (no load ) - Voltage (rated load )
Regulation:
x 100
Voltage (rated load )
Shall not exceed 5 percent
Temperature rise: 40°C maximum with 115 volts, 400 hertz across (1-2) at an ambient temperature
of 90°C.
2
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