MIL-T-27/181C
REQUIREMENTS: (When numbers in parentheses, such as (1-3) are used, they indicate the winding and the extreme terminals of the winding.)
Electrical ratings: Primary voltage:
(1-2): 115 volts, 60 Hz. Secondary voltage:
(3-5): 6.3 volts ct, 2 amperes rms.
(6-8): 450 volts ct, 30 milliamperes dc. Working voltage: 535 volts peak.
Volt-ampere rating: 26.1 volt-ampere. Design and construction:
Dimensions and configuration: See figure 1. Duty cycle: Continuous.
Case: Metal.
Material: Steel. Terminals: Solder lug.
Terminal height: .437 ±.031 inch (11.10 ±0.79 mm). Weight: 2.0 pounds, maximum.
Operating temperature range: -55·C to + 130·C.
Terminal strength: MIL-STD-202, method 211, test condition A, 5.0 pounds. Dielectric withstanding voltage (at sea level): 1,500 volts rms.
Electrical characteristics:
No load: With 115 volts, 60 hertz across (1-2), current in (1-2), shall not exceed 200 milliamperes and the power in (1-2) shall not exceed 2 watts.
Voltage across (3-5): 7.27 volts ±3 percent; voltage across (6-8): 514 volts ±3 percent. Rated load: With 115 volts, 60 hertz across (1-2), the voltage across (3-5) shall be 6.3 volts ±3
percent with 2 amperes load; the voltage across (6-8) shall be 450 ±3 percent with 30 milliamperes
load.
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