1、AMSC N/A FSC 5950 INCH-POUND MIL-PRF-27/29C 28 April 2008 SUPERSEDING MIL-PRF-27/29B 15 September 1975 PERFORMANCE SPECIFICATION SHEET TRANSFORMER, AUDIO FREQUENCY This specification is approved for use by all Depart- ments and Agencies of the Department of Defense. The complete requirements for pro
2、curing 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. FIGURE 1. Dimensions and configurati
3、ons Inches mm .025 .030 .060 .100 .200 .250 .300 .400 .450 .817 .880 1.140 0.64 0.76 1.52 2.54 5.08 6.35 7.62 10.16 11.43 20.75 22.35 28.96 WORKING VOLTAGE 50 VOLTS CIRCUIT DIAGRAM AND MARKING Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-2
4、7/29C 2 REQUIREMENTS: (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 (1-3): 24 volts CT, 18 kHz. Primary current (1-3): .15 amperes rms. Secondary voltage: (4-6) 14 Volts rms CT. (7-9) 8 Vol
5、ts rms CT. Secondary current: (4-6) .3 ampere rms. (7-9) .04 ampere rms. Working voltage: 50 volts. Design and construction: Dimensions and configuration: See figure 1. Duty cycle. Continuous. Case: Encapsulated. Material: Diallyl phthalate, ASTM-D5948, type SDG. Terminals: Nickel, pin type. Termina
6、l height: .250 .060. Weight: 4 ounces. Altitude: Operating: 10,000 feet. Nonoperating: 40,000 feet. Operating temperature range: -55C to +105C. Maximum operating temperature: +105C (ambient plus temperature rise). Temperature rise: 20C with 24 volts, 18 kHz across (1-3) at an ambient temperature of
7、85C. Terminal strength: Method 211, MIL-STD-202, test condition A, 2.0 pounds. Dielectric withstanding voltage (at sea level): 500 volts rms (1-3) (4-6) (7-9). Insulation resistance: Method 302 of MIL-STD-202, test voltage, 100 volts dc. Provided by IHSNot for ResaleNo reproduction or networking per
8、mitted without license from IHS-,-,-MIL-PRF-27/29C 3 Electrical characteristics: No load: With 24 volts, 18 kHz across (1-3) Current in (1-3): .15 ampere maximum. Voltage across (4-6): 14.6 V maximum. Voltage across (7-9): 8.4 V maximum. Rated load: With 24 volts, 18 kHz across (1-3) Current in (4-6
9、): .3 ampere maximum. Voltage across (4-6): 14 V 2 percent. Current in (7-9): .04 ampere maximum. Voltage across (7-9): 8 V 2 percent. Polarity: Terminals 1, 4, and 7 shall be of the same instantaneous polarity. Marking location: See figure 1. Part or Identification Number (PIN): M27/29-01. Changes
10、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 whatsoever for any inaccuracies in these notations. Bidders and contractors a
11、re 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 document references the following: MIL-STD-202 ASTM-D5948 Custodians: Prepa
12、ring activity: Army - CR DLA - CC Navy - EC Air force 11 DLA-CC (Project 5950-2008-006) Review activities: Army AR, CR4 Navy - AS, MC 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 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-,-,-
