DLA MIL-T-27 227 A-2009 TRANSFORMER POWER STEP-DOWN.pdf

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1、AMSC N/A FSC 5950 INCH-POUND MIL-T-27/227A 29 September 2009 SUPERSEDING MIL-T-27/227 19 May 1978 MILITARY 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 the trans

2、former 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 on the side of the case. FIGURE 1. Dimensions and configurations 115 V400 Hz12WORKING VOLTAGE: 115 V

3、rms ALTITUDE: 70,000 FT. MAX. 3 4 5 6 13.1 Vrms 11.7 Vrms NOT TO EXCEEDHEIGHT OF CASESURFACE.750 MAX. 1 2 3CIRCUIT DIAGRAM AND MARKING 7 .180.180.125 .015.125 .015DIA. THRU(2 PLACES)1.000 MAX. 1.203 .015 1.015 .015 45 6 MALCO #2309 TERMINAL OR EQUIVALENT (6 REQD.) Inactive for new design after 25 Au

4、gust 1998 Inches mm .015 0.38 .125 3.18 .180 4.57 .750 19.05 1.000 25.40 1.015 25.78 1.203 30.56Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-27/227A 2 REQUIREMENTS: (When numbers in parentheses, such as (1-3) are used, they indicate the wind

5、ing and the extreme terminals of the winding.) Electrical ratings: See table I. Primary voltage (1-2): 115 volts rms, 400 hertz 20. Primary current (1-2): 0.02 amperes. Volt-ampere rating: 1.9 volt-amperes. Secondary voltage: (3-4): 13.1 volts rms. (5-6): 11.7 volts rms. Secondary current: (3-4): 0.

6、1 ampere. (5-6): 0.050 ampere. Working voltage: 115 volts rms. Design and construction: Dimensions and configuration: See figure 1. Duty cycle: Continuous. Case: Encapsulated. Terminals: Solder terminal, Malco No 2309 or equivalent. Terminal height: Not to exceed height of case surface. Altitude: 70

7、,000 feet, maximum. Weight: 0.8 ounces, maximum. Terminal strength: MIL-STD-202, method 211, test condition A, 5.0 pounds. Dielectric withstanding voltage: At sea level: 1,500 volts rms. At reduced barometric pressure: 300 volts rms. Electrical characteristics: No load: With 115 volts rms, 400 hertz

8、 across (1-2), the current in (1-2) shall not exceed 4 milliamperes and the power in (1-2) shall not exceed 4-7 watts. Voltage across (3-4): 13.1 volts rms 10 percent. Voltage across (5-6): 11.7 volts rms 10 percent. Provided by IHSNot for ResaleNo reproduction or networking permitted without licens

9、e from IHS-,-,-MIL-T-27/227A 3 Rated load: With 115 volts ac, 400 hertz across (1-2), Voltage across (3-4): 13.1 volts rms 10 percent. Voltage across (5-6): 11.7 volts rms 10 percent. DC resistance: (1-2): 370 ohms, maximum. (3-4): 7.88 ohms, maximum. (5-6): 8.08 ohms, maximum. Polarity: Additive, w

10、ith 2 and 3, and 4 and 5 connected. Temperature rise: +99C with 115 volts rms, 400 hertz across (1-2) at an ambient temperature of +71C. Marking location: See figure 1. Part or Identification Number (PIN): M27/227-01. Changes from previous issue. The margins of this specification are marked with ver

11、tical lines to 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 en

12、tire content irrespective 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 5950-2009-014) DL

13、A - CC Review activities: Army - AR, CR4 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 http:/assist.daps.dla.mil. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-