MIL-PRF-27/180B
REQUIREMENTS: (When numbers in parentheses, i.e., (1-2) are used, they indicate
the winding and the extreme terminals of the windings.)
Electrical ratings:
Primary voltage:
(1-2): 57.5 volts rms, 400 Hz.
(1-3): 99.7 volts rms, 400 Hz
(1-4): 115 volts rms, 400 Hz
Volt-ampere rating: 51.
Secondary voltage:
(5-6): 12.6 volts rms.
(7-9): 12.6 volts rms ct.
Secondary current:
(5-6): 2 amperes rms.
(7-9): 2 amperes rms.
DC resistance:
(1-4): 3.5 ohms maximum.
(5-6): 0.112 ohm maximum.
(7-9): 0.102 ohm maximum.
Working voltage (peak): 535 volts.
Design and construction:
Dimensions and configuration: See figure 1.
Duty cycle: Continuous.
Case: Metal.
Material: Steel.
Terminals: Solder type, United Transformer Company part number NC-3L, or equivalent.
Terminal height: 0.437 inch maximum.
Weight: 2.2 pounds maximum.
Altitude: 50,000 feet maximum.
Operating temperature range: -55°C to +130°C.
Shock (specified pulse): MIL-STD-202, method 213, test condition H.
Terminal strength: MIL-STD-202, method 211, test condition A, 5 pounds.
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