1、AMSC N/A FSC 5950 INCH-POUND MIL-PRF-27/351E 25 July 2008 SUPERSEDING MIL-PRF-27/351D 22 January 1992 PERFORMANCE SPECIFICATION SHEET TRANSFORMERS, POWER, 25 VOLTAMPERES, 400 HZ This specification is approved for use by all Depart- ments and Agencies of the Department of Defense. The complete requir
2、ements for procuring 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. 3. Dimensional tolerance shall be .03 (0.8 mm) unless otherwise specifie
3、d. 4. Marking shall be on the top case. 5. Terminals shall be identified by numbers 1 through 5 marked on the top of case above each terminal. 6. Secondary electrical values shall be marked as specified in table I, as applicable. 7. The insert shall be 5 full threads minimum. 8. Terminal spacing is
4、.35 .03 (8.9 0.8 mm). FIGURE 1. Dimensions and configuration. INCHES MM .063 .15 .164 .23 1.00 1.75 1.60 3.8 4.17 5.8 25.4 44.5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-27/351E 2 REQUIREMENTS: (When numbers in parentheses i.e (1-2) are
5、 used, they indicate the winding and the extreme terminals of the winding.) Electrical ratings: See table I. Primary voltage (1-2): 115 volts 10 percent, 400 hertz 5 percent. Working voltage: 357 volts, peak. Design and construction: Dimensions and configuration: See figure 1. Weight: .33 pound, max
6、imum. Duty cycle: Continuous. Case: Epoxy fiberglass or diallyl phthalate. Altitude: 70,000 feet, maximum. Operating temperature range: -55C to +130C. Terminals: Feedthrough. Terminal height: 0.23 inch, maximum. Terminal strength: MIL-STD-202, method 211, test condition A, 5 pounds. Dielectric withs
7、tanding voltage: At sea level: 1000 volts, rms. At reduced barometric pressure: 1.25 times the peak working voltage specified. Electrical characteristics: No load: With 115 volts, 400 hertz across (1-2); current in (1-2) shall not exceed 25 milliamperes rms. Rated load: With 115 volts, 400 hertz acr
8、oss (1-2) and a resistive load with current as specified in table I in (3-4), the voltage across (3-4) shall be as specified in table I. Efficiency: 90 percent minimum at rated load. Polarity: Additive with terminals 2 and 3 connected. Provided by IHSNot for ResaleNo reproduction or networking permi
9、tted without license from IHS-,-,-MIL-PRF-27/351E 3 Regulation: 100)()()(xloadratedVoltageloadratedVoltageloadnoVoltage Shall not exceed 10 percent Temperature rise: 40C maximum with 115 volts, 400 hertz across (1-2) at an ambient temperature of 90C. Marking location: See figure 1. Part or Identifyi
10、ng Number (PIN). M27/351-(dash number from table I). TABLE I. Electrical ratings. Dash number M27/351 Secondary voltage 1/ (3-4) (V rms) 5% Secondary current (3-4) (amperes rms) -01 -02 -03 -04 -05 -06 -07 -08 -09 -10 -11 5.0 7.0 10.0 12.0 14.0 17.0 24.0 28.0 34.0 115.0 26.0 5.00 3.57 2.50 2.08 1.79
11、 1.47 1.04 0.89 0.74 0.21 0.890 1/ One-half of the listed output voltage is available between pins 3 and 5 or 4 and 5. VERIFICATION: Extent of qualification: Qualification testing and approval to M27/350-11 and M27/354-09 shall be sufficient to grant qualification approval to MIL-PRF-27/350 through
12、MIL-PRF-27/354 inclusive, all parts. Qualification testing and approval to M27/351-11 shall be sufficient to grant qualification approval to M27/351-01 through M27/351-11. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-27/351E 4 Changes from
13、 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 whatsoever for any inaccuracies in these notations. Bidders and contractors are c
14、autioned 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. MIL-PRF-27 MIL-STD-202 Custodians: Preparing activity: Army - CR DLA - CC Navy - EC Air Force - 85 (Project 595
15、0-2008-054) DLA - CC Review activities: Army AR, CR4 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 http:/assist.daps.dla.mil. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
