1、AMSC N/A FSC 5950 INCH-POUND MIL-PRF-27/33A 28 April 2008 SUPERSEDING MIL-PRF-27/33 6 August 1975 PERFORMANCE SPECIFICATION SHEET TRANSFORMER, POWER, STEP-UP This specification is approved for use by all Depart- ments and Agencies of the Department of Defense. The complete requirements for procuring
2、 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 the side of the case. 4. Terminal angular position tolerance is
3、1. FIGURE 1. Dimensions and configurations. Inches mm .927 1.65 23.55 41.91 Inactive for New Design after 23 May 1997Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-27/33A 2 REQUIREMENTS: (When numbers in parentheses, i.e., (1-3) are used, th
4、ey indicate the winding and the extreme terminals of the winding.) Electrical ratings: Primary voltage (1-2): 28 volts rms, 400 Hz 5 percent. Secondary voltage: (3-4): 70 volts rms, 4 volts rms. (3-5): 140 volts rms, 8 volts rms centertap. (4-5): 70 volts rms, 4 volts rms. Working voltage: (1-2): 20
5、0 volts maximum. (3-5): 200 volts maximum. Design and construction: Dimensions and configuration: See figure 1. Duty cycle: Continuous. Case: Encapsulated. Material: Diallyl phthalate. Terminals: Turret, solder type, brass, hot tinned dip. Terminal height: 0.156 inch 0.005. Weight: 4 ounces. Operati
6、ng temperature range: -55C to +130C. Terminal strength: Method 211 of MIL-STD-202, test condition A, 2 pounds. Dielectric withstanding voltage (at sea level): 560 volts rms. Electrical characteristics: No load: With 28 volts, 400 Hz across (1-2); voltage across (3-4): 70 volts rms 4 volts, and the v
7、oltage across (4-5): 70 volts rms 4 volts. Rated load: With 28 volts, 400 Hz across (1-2); voltage across (3-5) shall be 140 volts rms centertap, 8 volts. DC resistance, (1-2): 16.5 ohms 20 percent. (3-4): 97 ohms 20 percent. (4-5): 112 ohms 20 percent. Polarity: Additive with 2 and 3 connected. Pro
8、vided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-27/33A 3 Temperature rise: 30C maximum. Quality assurance provisions: Retention of qualification: Not applicable for this specification sheet. Quality conformance inspection: Groups A and B tests o
9、f MIL-PRF-27 shall be applicable. Marking location: See figure 1. Part or Identification Number (PIN): M27/33-01. 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
10、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 entire content irrespective of the marginal notations and relationship to the last previous issue. Referen
11、ced 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 - 11 (Project 5950-2008-007) DLA -CC Review activities: Army - AR, CR4, MI Navy - AS, MC, OS, SH Air Force - 19 NOTE: The activities li
12、sted 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 this 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-,-,-
