DLA MIL-PRF-27 155 C-2011 TRANSFORMERS POWER STEPDOWN.pdf

1、AMSC N/A FSC 5950 INCH-POUND MIL-PRF-27/155C 22 April 2011 SUPERSEDING MIL-PRF-27/155B 14 February 1995 PERFORMANCE SPECIFICATION SHEET TRANSFORMERS, POWER, STEPDOWN This specification is approved for use by all Depart- ments and Agencies of the Department of Defense. The requirements for procuring

2、the transformer described herein shall consist of this document and the latest issue of specification MIL-PRF-27. NOTES: 1. Dimensions are in inches. 2. Metric equivalents are given for general information only. 3. Tolerance on terminal position dimensions is .016 inch. 4. Unless otherwise speicifed

3、, tolerance on overall case dimensions shall be +.000, -.125 inch. 5. Marking shall be on the side of the case. FIGURE 1. Dimensions and configurations 1 2 3 4 5 1.938 1.375 1.250 1.812 MARKING2.750+ .000- .188.138-32 UNC-2A.375 LONG 4 REQUIREDNC-3 TERMINALOR EQUIVALENTEQUALLY SPACED 72APART ON A .7

4、50 DIA(TERM OD .312 .0315 REQUIRED1115 V50/60 H z23 20 V 4 CT 5 .6A WORKING VOLTAGE (PEAK) 535 VOLTSCIRCUIT DIAGRAM AND MARKING .469 .031INCHES MM .016 0.41 .031 0.79 .094 2.39 .125 3.18 .138 3.51 .188 4.78 .312 7.92 .375 9.53 .469 11.91 .750 1.250 1.375 1.812 1.938 2.750 19.05 31.75 34.93 46.03 49.

5、23 69.85 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-27/155C 2 REQUIREMENTS: (When numbers in parentheses, i.e., (1-2) are used, they indicate the winding and the extreme terminals of the winding.) Electrical ratings: See table I. Primary

6、 voltage (1-2): 115 volts rms, 50/60 Hz. Voltamperes: 12. Secondary voltage (3-5): 20 volts rms, center-tap. Secondary current (3-5): 0.6 amperes. Working voltage (peak): 535 volts. Design and construction: Dimensions and configuration: See figure 1. Duty cycle: Continuous. Case: Metal encased. Term

7、inals: Solder terminal, Lundey #399E or equivalent. Terminal height: .469 inch .030 inch (11.91 0.76 mm). Weight: 20.9880 ounce, maximum. Operating temperature range: -55C to +130C. Terminal strength: MIL-STD-202, method 211, test condition A, 5 pounds and test condition E, 8.0 ounce-inch. Shock (sp

8、ecified pulse): MIL-STD-202, method 213, test condition H. Dielectric withstanding voltage (at sea level): 1,500 volts rms. Electrical characteristics: No Load: With 115 volts, 60 Hz across (1-2), current in (1-2) shall not exceed 35 mA and the power in (1-2) shall not exceed 0.8 watts. Rated load:

9、With 115 volts, 60 Hz across (1-2), the voltage across (3-5) shall be 20 volts 5 percent. DC resistance: (1-2): 82 ohms, maximum. (3-5): 3.44 ohms, maximum. Polarity: Additive, with terminals 2 and 3 connected. Temperature rise: 40C with 115 volts rms, 60 Hz across (1-2) at an ambient temperature of

10、 90C. Marking location: See figure 1. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-27/155C 3 Part or Identification Number (PIN): M27/155-01. Changes from previous issue. The margins of this specification are marked with vertical lines to

11、indicate where changes from the previous issue were made. This was done as a convenience only and the Government assumes no liability whatsoever for any inaccuracies in these notations. Bidders and contractors are cautioned to evaluate the requirements of this document based on the entire content ir

12、respective of the marginal notations and relationship to the last previous issue. Referenced documents. In addition to MIL-PRF-27, this document references the following: MIL-STD-202 Custodians: Preparing activity: Army - CR DLA - CC Navy - EC Air Force - 85 (Project 5950-2009-049) DLA CC Review Act

13、ivities: Army AR, CR4, MI Navy AS, MC, OS, SH Air Force 19, 99 NOTE: The activities listed above were interested in this document as of the date of this document. Since organizations and responsibilities can change, you should verify the currency of the information above using the ASSIST Online database at https:/assist.daps.dla.mil. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-