MIL-PRF-27/134B
REQUIREMENTS: (When numbers in parentheses, such as (1-2) are used, they indicate the winding and the
extreme terminals of the winding.)
Electrical ratings:
Primary voltage:
(1-2): 120 volts, 400 Hz, 12 VA.
Secondary voltage:
Working voltage: 250 volts.
Design and construction:
Dimensions and configuration: See figure 1.
Duty cycle: Continuous.
Case: Epoxy, glass in accordance with MIL-DTL-25421, type 1, class 2.
Terminals: Solder, turret type
Material: Brass, silver-plated.
Height: .200 inches, maximum.
Weight: 100 grams.
Altitude: 50,000 feet.
Operating temperature range: -65C to +155C.
Terminal strength: MIL-STD-202, method 211, test condition A, 5.0 pounds.
Dielectric withstanding voltage
At sea level: 700 volts rms.
At reduced barometric pressure: 312 volts rms.
Electrical characteristics:
No load: With 120 volts and 400 Hz in (1-2):
Current in (1-2): 20 mA maximum.
Power in (1-2):
2.40 watts maximum.
Voltage across (3-4): 31.5 V rms ±2 percent.
Rated load: With 120 volts and 400 Hz in (1-2):
Voltage across (3-4): 28.6 V rms ±5 percent.
Current in (3-4): 0.385 A rms.
2
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