1、AMSC N/A FSC 5950 INCH-POUND MIL-PRF-27/334D 25 July 2008 SUPERSEDING MIL-PRF-27/334C 17 January 1986 PERFORMANCE SPECIFICATION SHEET TRANSFORMERS, POWER, 25 VOLT-AMPERES, 400 HERTZ This specification is approved for use by all Depart- ments and Agencies of the Department of Defense. The complete re
2、quirements 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 only. 3. Marking shall be on top and sides of the case. 4. Dimensiona
3、l tolerance shall be .02 unless otherwise specified. 5. For serial output connect terminals 4 and 5 together. For parallel output connect pins 3 to 4 and 5 to 6. FIGURE 1. Dimensions and configurations. Inches mm A 1.75 .02 44.5 .5 B 1.50 .02 38.1 .5 C 1.56 .02 39.6 .5 D 1.25 .02 31.8 .5 E 1.00 .02
4、25.4 .5 F 0.25 .04 6.4 1.0 G 1.25 .04 31.8 1.0 H 1.44 .04 36.6 1.0 J 0.35 .04 8.89 1.0 K .112-40 UNC 2B Inches mm .02 0.5 .05 1.3 .09 2.3 .17 4.3 .170 4.32 .35 8.9 1.05 26.7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-27/334D 2 REQUIREMEN
5、TS: (When numbers in parentheses, i.e., (1-2) are used, they indicate the winding and the extreme terminals of the winding.) Electrical ratings: Primary voltage (1-2): 115 volts rms, 400 20 hertz. Secondary voltage and current (3-6): See table I. Volt-ampere rating: 25 volt-amperes. Working voltage
6、(1-2): 535 volts peak. Design and construction: Dimensions and configuration: See figure 1. Duty cycle. Continuous. Case: Encapsulated. Material: Epoxy fiberglass or diallyl phthalate. Terminals: Turret type. Terminal height: .170 inch, maximum. Weight: .52 pound, maximum. Operating temperature rang
7、e. -55C to +130C. Altitude: 70,000 feet. Terminal strength: Method 211, MIL-STD-202, test condition A, 2.0 pounds. Dielectric withstanding voltage (each winding, secondary windings connected in series): At sea level: 1,500 volts rms. At reduced barometric pressure: 1.25 times the peak working voltag
8、e specified. Electrical characteristics: Rated load: With 115 volts rms and 400 Hz in (1-2), and rated current in secondary, the voltage across (3-6) shall be as specified in table I, 5 percent. Efficiency: 90 percent minimum at rated load. Temperature rise: 35C with 115 volts rms, 400 hertz across
9、(1-2) at an ambient temperature of 95C, full load terminals (3-6). Regulation: 100)()()(xloadratedVoltageloadratedVoltageloadnoVoltage Shall not exceed 10 percent. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-27/334D 3 Polarity: Additive,
10、with terminals 2 and 3, and 5 and 4 connected. Marking location: See figure 1. Part or Identification Number (PIN): M27/334-(dash number from table I). TABLE I. Electrical ratings. Secondary voltage (3-6) (V rms) Secondary current (3-6) (amperes) Dash number M27/334 Series (CT) Parallel Series Paral
11、lel -01 -02 -03 -04 -05 -06 -07 -08 -09 -10 10 12.6 16 20 24 34 40 56 88 120 5 6.3 8 10 12 17 20 28 44 60 2.50 2.00 1.56 1.25 1.04 0.735 0.625 0.446 0.284 0.208 5.00 4.00 3.12 2.50 2.08 1.47 1.25 0.892 0.568 0.416 VERIFICATION: Extent of qualification: Qualification testing and approval to M27/332-1
12、0 and M27/337-10 shall be sufficient to grant qualification approval to MIL-PRF-27/332 through MIL-PRF-27/337, inclusive, all parts. Qualification testing and approval to M27/334-10 shall be sufficient to grant qualification approval M27/334-01 through M27/334-10. Provided by IHSNot for ResaleNo rep
13、roduction or networking permitted without license from IHS-,-,-MIL-PRF-27/334D 4 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 n
14、o 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 irrespective of the marginal notations and relationship to the last previous issue. Referenced documents. MIL-PRF-27 MIL-STD
15、-202 Custodians: Preparing activity: Army - CR DLA - CC Navy - EC Air Force - 85 (Project 5950-2008-049) 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-,-,-
