1、AMSC N/A FSC 5950 INCH-POUND MIL-PRF-27/157E 3 December 2010 SUPERSEDING MIL-PRF-27/157D 7 March 1995 PERFORMANCE SPECIFICATION SHEET TRANSFORMER POWER, STEPDOWN This specification is approved for use by all Departments and agencies of the Department of Defense. The requirements for acquiring the pr
2、oduct described herein shall consist of this specification sheet and the latest issue of MIL-PRF-27. NOTES: 1. Dimensions are in inches. 2. Metric equivalents are given for general information only. 3. Unless otherwise specified, tolerance on overall case dimensions is +.000, -.125 inch. 4. Toleranc
3、e on terminal position dimensions is .016 inch. 5. Marking shall be on the side of the case. FIGURE 1. Dimensions and configurations INCHES MM .016 0.41 .031 0.79 .125 3.18 .138 3.51 .188 4.78 .218 5.54 .375 9.52 .438 11.13.500 12.70.625 1.438 1.688 2.062 2.312 3.125 15.88 36.53 42.88 52.37 58.72 79
4、38Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-27/157E 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. TABLE I. Elec
5、trical ratings. 1/ Dash no. Primary voltage Secondary voltage (5-6) (6-7) (8-9) (9-10) 01 (2-4): 115V, 50/60 Hz (1-4): 115V, 50/60 Hz (1-3): 115V, 50/60 Hz (2-3): 115V, 50/60 Hz 8.25 V 7.76 V 8.74 V 9.24 V 12.0 V 11.28 V 12.72 V 13.44 V 12.0 V 11.28 V 12.72 V 13.44 V 8.25 V 7.76 V 8.74 V 9.24 V Prim
6、ary current (1-4): 0.15 ampere. Secondary current: (5-7): 0.4 ampere. (8-10): 0.4 ampere. VA: 16. Working voltage (peak): 535 volts. Design and construction: Dimensions and configuration: See figure 1. Duty cycle: Continuous. Case: Metal encased. Terminals: Solder terminal, Lundey #199E or equivalen
7、t. Terminal height: .438 inch (11.13 mm) maximum. Weight: 32.63 ounce, maximum. Altitude: 50,000 feet, 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: MIL-STD-202, method 213, tes
8、t condition H. Dielectric withstanding voltage: At sea level: 1,500 volts rms. At reduced barometric pressure: 670 volts rms. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-27/157E 3 Electrical characteristics: No load: With 115 V and 60 Hz
9、in (2-4): Current in (2-4): 120 mA, maximum. Power in (2-4): 1.5 watts, maximum. Voltage across (5-7): 22.7 volts, 3 percent. Voltage across (8-10): 22.7 volts, 3 percent. Rated load: With 115 volts and 60 Hz across (2-4): Voltage across (5-7): 20.25 volts, 5 percent. Voltage across (8-10): 20.25 vo
10、lts, 5 percent. DC resistance: (1-4): 27.4 ohms, 25 percent. (8-10): 2.6 ohms, 25 percent. (5-7): 2.43 ohms, 25 percent. Polarity: Additive, with terminals 1 and 5, and 7 and 8 connected. Temperature rise: 40C with 115 volts rms, 60 Hz across (2-4) at an ambient temperature of 90C. Marking location:
11、 See figure 1. Part or Identification Number (PIN): M27/157-01. Changes from previous issue. The margins of this specification are marked with vertical lines to indicate where changes from the previous issue were made. This was done as a convenience only and the Government assumes no liability whats
12、oever for any inaccuracies in these notations. Bidders and contractors are cautioned to evaluate the requirements of this document based on the entire content irrespective of the marginal notations and relationship to the last previous issue. Referenced documents. In addition to MIL-PRF-27, this doc
13、ument references the following: MIL-STD-202 Custodians: Preparing activity: Army - CR DLA - CC Navy - EC Air Force - 85 (Project 5950-2009-047) DLA CC Review Activities: Army AR, CR4, MI Navy AS, MC, OS 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-,-,-
