MIL-PRF-27/321D
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 (1-2): 115 volts ac, 50 to 60 hertz.
Primary dc resistance: 1.1 ohms 25 percent.
Secondary voltage (3-5): See table I.
Volt-ampere rating: 200 volt-amperes.
Working voltage (1-2): 535 volts peak.
Design and construction:
Dimensions and configuration: See figure 1.
Duty cycle. Continuous.
Case: Metal enclosed.
Material: Steel.
Terminals: Solderable terminals.
Dash numbers
Terminal type
Height (inches)
Diameter (inches)
0.464 .031
0.080 .005
01 through 05
hook
0.375 .031
0.062 .005
06 through 27
hook
Weight: 10.5 pounds, maximum.
Operating temperature range. -55C to +130C.
Altitude: 10,000 feet.
Terminal strength: MIL-STD-202, method 211, test condition A, 2.0 pounds.
Dielectric withstanding voltage (each winding) (at sea level): 1,500 volts rms.
Electrical characteristics:
Rated load: With 115 volts ac and 60 Hz across (1-2), and rated current in secondary, the voltage
across (3-5) shall be as specified in table I.
Regulation: Voltage (no load ) Voltage (rated load )
x 100
Voltage (rated load )
Shall not exceed 10 percent.
Polarity: Additive with terminals 2 and 3 connected.
Temperature rise: +35C with 115 volts ac, 60 hertz across (1-2) at an ambient temperature of +95C,
full load terminals (3-5).
Shock (specified pulse): MIL-STD-202, Method 213, test condition G.
3
For Parts Inquires submit RFQ to Parts Hangar, Inc.
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business