1、AMSC N/A FSC 5950 MIL-PRF-27/70D 28 April 2008 SUPERSEDING MIL-PRF-27/70C 2 June 2003 PERFORMANCE SPECIFICATION SHEET TRANSFORMERS, AUDIO FREQUENCY This specification is approved for use by all Depart- ments and Agencies of the Department of Defense. The requirements for acquiring the products descr
2、ibed herein shall consist of this specification and MIL-PRF-27. FIGURE 1. Dimensions and configuration. INCH-POUND Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-27/70D 2 Inches mm .005 .020 .030 .062 .125 .200 .400 .500 .590 .600 0.13 0.51
3、0.76 1.57 3.18 5.08 10.16 12.70 14.99 15.24 NOTES: 1. Dimensions are in inches. 2. Metric equivalents are given for general information only. 3. Unless otherwise specified, tolerance is .005 (0.13 mm). 4. Marking shall be on sides and/or top of case. 5. Electrical values shall be marked as specified
4、 in table I, as applicable. FIGURE 1. Dimensions and configuration Continued. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-27/70D 3 REQUIREMENTS: (When numbers in parentheses, i.e. (1.-3) are used, they indicate the winding and the extreme
5、 terminals of the winding.) Electrical ratings: See table I. Working voltage: 175 volts. Frequency range: 200 hertz to 50 kilohertz (except 200 hertz to 15 kilohertz for M27/70-01). TABLE I. Electrical ratings. 1/ Dash number Circuit diagram (see figure 1) Primary impedance ohms (1-3) Secondary impe
6、dance ohms (4-6) Primary DCR ohms 25% Primary power level at 200 Hz mW (max) Secondary DCR ohm 25% Primary unbalanced DC current max (mA) 01 02 03 04 05 06 07 08 09 10 11 12 A A A A A A A B A A B B 100 k CT 25 k CT 10 k CT 10 k CT 10 k CT 4,000 CT 1,000 CT 1,000 CT 600 CT 600 CT 600 CT 600 CT 1,000
7、CT 1,000 CT 10 k CT 1,500 CT 600 CT 10 k CT 600 CT 4 25 k CT 600 CT 60 4 5,300 2,600 1,000 1,000 1,000 350 90 90 50 50 50 50 60 150 150 150 150 150 150 150 150 150 150 150 55 130 1,300 200 65 1,300 65 0.5 3,200 65 6.5 0.5 0 0 1.0 1.0 1.0 1.5 3.0 3.0 4.0 4.0 4.0 4.0 1/ Qualification testing and appro
8、val to M27/70-01 and all tests in accordance with table VII of MIL-PRF-27 for M27/70-05 and M27/70-08 shall be sufficient to grant qualification approval to M27/70-01 through M27/70-12, inclusive. Qualification by similarity can be obtained for MIL-PRF-27/67, /68, /69, /71, and /72 by the submission
9、 of two samples each, (of dash number 01 for MIL-PRF-27/67, /68, /69, /71, and /72) which shall be subjected to group A, subgroup II tests, with zero defects allowed. Design and construction: Dimensions and configuration: See figure 1. Duty cycle: Continuous. Case: Encapsulated. Material: Plastic. T
10、erminals: Pin (printed circuit). Material: Nickel iron alloy, tin plated. Diameter: .030 .005 inch. Length: .500 .030 inch. Weight: 12.8 grams maximum. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-27/70D 4 Altitude: 70,000 feet, maximum. O
11、perating temperature range: -55C to +130C. Terminal strength: MIL-STD-202, method 211, test condition A, 2 pounds. Dielectric withstanding voltage: At sea level: 500 volts rms. At barometric pressure: 300 volts rms. Electrical characteristics: See table II. Frequency response. Reference frequency: 1
12、 kilohertz. Polarity: Additive, with terminals 3 and 4 connected. TABLE II. Electrical characteristics. Frequency response at 200 Hz to 50 kHz 1 dB Dash number Zs(1-3) ohms ZL (4-6) ohms EL volts Primary dc current (1-3) mA 01 1/ 02 03 04 05 06 07 08 09 10 11 12 100 k 25 k 10 k 10 k 10 k 4,000 1,000
13、 1,000 600 600 600 600 1,000 1,000 10 k 1,500 600 10 k 600 4 25 k 600 60 4 7.0 7.0 22.0 22.0 22.0 14.0 7.0 7.0 5.0 5.0 5.0 5.0 0 0 0.5 0.5 0.5 0.75 1.5 1.5 2.0 2.0 2.0 2.0 1/ Frequency response is 200 hertz to 15 kilohertz 1 dB. Marking location: See figure 1. Part or Identifying Number (PIN): M27/7
14、0- (dash number from table I). Substitution data (information only): This military transformer is substitutable for CAGE 70674, PIN 324-5H. This in no way implies that the manufacturers part is substitutable for the military item. This information is not intended to be complete. Provided by IHSNot f
15、or ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-27/70D 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 Govern
16、ment 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. Referenced documents. In a
17、ddition to MIL-PRF-27, this document references the following: MIL-STD-202 MIL-PRF-27/67 MIL-PRF-27/68 MIL-PRF-27/69 MIL-PRF-27/71 MIL-PRF-27/72 Custodians: Preparing activity: Army CR DLA CC Navy EC Air Force 11 (Project 5950-2008-012) DLA - CC Review activities: Army AR, CR4, MI Navy AS, MC, OS, S
18、H 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-,-,-
