1、 AMSC N/A FSC 5950 INCH-POUND MIL-T-27/223C 4 May 2012 SUPERSEDING MIL-T-27/223B 30 June 1992 MILITARY SPECIFICATION SHEET TRANSFORMERS, POWER, STEP-DOWN This specification is approved for use by all Depart- ments and Agencies of the Department of Defense. The complete requirements for procuring the
2、 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. The number of terminals and the configuration of the terminals shall be as shown on figu
3、re 2. 4. For circuit diagram and marking, see figure 3. 5. Marking shall be on side of case. FIGURE 1. Dimensions and configuration. Inactive for new design after 30 June 1992. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-27/223C 2 Inches mm
4、 .002 0.05 .015 0.38.032 0.81 .138 3.51.187 4.75 1.375 34.921.656 42.06 1.750 44.451.875 47.62 2.250 57.15FIGURE 1. Dimensions and configurations - continued Inches mm .250 6.35 .500 12.701.000 25.40 NOTES: 1. Dimensions are in inches. 2. Metric equivalents are given for general information only. Pr
5、ovided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-27/223C 3 REQUIREMENTS: (When numbers in parentheses, i.e., (1-2) are used, they indicate the winding and the extreme terminals of the windings.) Electrical ratings: See table I. Primary voltage (1-
6、2): 107 V rms, 400 Hz 20. Working voltage: 120 V rms. Design and construction: Dimensions and configuration: See figure 1. Duty cycle: Continuous. Case: Encapsulated. Terminals: Solder terminal Malco no. 253 or equivalent. Terminal height: Not to exceed top of case. Weight: 11.8 ounces maximum. Alti
7、tude: 70,000 feet maximum. Operating temperature range: -55C to +170C. Terminal strength: MIL-STD-202, method 211, test condition A, 5 pounds. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-27/223C 4 Dielectric withstanding voltage: At sea lev
8、el: 1,000 V rms. At reduced barometric pressure: 300 V rms. Electrical characteristics: Rated load: With 107 V rms, 400 Hz across (1-2), the secondary voltage shall be as specified (see table I). Polarity: Polarity shall be the same on terminals (see table II). Temperature rise: 99C with 107 V rms,
9、400 Hz across (1-2) at an ambient temperature of 71C. VERIFICATION: Qualification inspection: Not applicable. Conformance inspection: Groups A and B tests of MIL-PRF-27 shall be applicable. Marking location: See figure 1. Part or Identifying Number (PIN): M27/223-(dash number from table I). TABLE I.
10、 Electrical ratings. Dash no. Volt ampere rating (VA) Voltage (V rms 10%) Current (A) (3-5) (6-7) (7-8) (1-2) (3-5) (6-7) (7-8) 01 125 49 CT 5.57 - 1.20 0.010 22.5 - 02 130 49 CT 5.55 8.45 1.25 0.010 16.4 2.86 TABLE II. Electrical characteristics. Dash no. No load: With 107 V rms, 400 Hz in (1-2) DC
11、 resistance ( max) Polarity Current mA, (max) (1-2) Power W (max) (1-2) Voltage 10% (3-5) Voltage10% (6-7) Voltage10% (7-8) (1-2) (3-5) (6-7) (7-8) 01 350 42 49 CT 5.57 - 1.93 20.0 .007 - 1, 3, 6 02 350 42 49 CT 5.55 8.45 1.93 20.0 0.14 0.1 1, 3, 6 Provided by IHSNot for ResaleNo reproduction or net
12、working permitted without license from IHS-,-,-MIL-T-27/223C 5 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 whatso
13、ever 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 docu
14、ment references no other documents. MIL-STD-202 Custodians: Preparing activity: Army - CR DLA - CC Navy - EC Air Force - 85 (Project 5950-2009-081 DLA CC Review Activities: 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-,-,-
