DLA MIL-PRF-27 134 B-2009 TRANSFORMER POWER STEP-DOWN.pdf
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1、AMSC N/A FSC 5950 INCH-POUND MIL-PRF-27/134B 9 November 2009 SUPERSEDING MIL-PRF-27/134A 23 April 1979 PERFORMANCE SPECIFICATION SHEET TRANSFORMER, POWER, STEP-DOWN This specification is approved for use by all Depart- ments and Agencies of the Department of Defense. The requirements for acquiring t
2、he transformer described herein shall consist of this specification sheet and MIL-PRF-27. NOTES: 1. Dimensions are in inches. 2. Metric equivalents are given for general information only. 3. Marking shall be sides of the case. FIGURE 1. Dimensions and configurations. Inches mm .015 0.38 .030 0.76 .0
3、50 1.27 .200 5.08 .280 7.11 .375 9.53 .550 13.97 .750 19.05 1.000 25.40 1.090 27.69 1.100 27.94 1.150 29.21 1.400 35.56 .112-40 UNC-2B INSERT 8 THDS MIN. 4 PLACES 4 3 CIRCUIT DIAGRAM 28.6 V 120 V 400 Hz 2 1 1 2 3 4 1.150 .030 .280 TYP. .030 (5 PLS) 1.000 .050 .200 MAX. 1.400 MAX. .375 .550 1.100 .01
4、51.090 MAX.750 .015 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-27/134B 2 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
5、 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,
6、 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: 3
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