DLA MIL-PRF-27 180 B-2008 TRANSFORMER POWER STEP-DOWN《电源降压器》.pdf

1、AMSC N/A FSC 5950 MIL-PRF-27/180B 18 July 2008 SUPERSEDING MIL-PRF-27/180A 7 January 1991 PERFORMANCE SPECIFICATION SHEET TRANSFORMER, POWER, STEP-DOWN This specification is approved for use by all Depart- ments and Agencies of the Department of Defense. The requirements for acquiring the products d

2、escribed herein shall consist of this specification and MIL-PRF-27. FIGURE 1. Dimensions and configurations. INCH-POUNDInactive for new design after 21 February 2003 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-27/180B 2 Working Voltage (p

3、eak): 535 V Circuit diagram and marking Inches mm .032 .062 .125 .138 .188 .312 .375 .437 .562 1.438 1.688 2.062 2.312 3.125 0.81 1.57 3.18 3.51 4.78 7.92 9.52 11.13 14.27 36.53 42.88 52.37 58.72 79.38 NOTES: 1. Dimensions are in inches. 2. Metric equivalents are given for general information only.

4、3. Marking shall be on the side of the case. FIGURE 1. Dimensions and configurations Continued. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-27/180B 3 REQUIREMENTS: (When numbers in parentheses, i.e., (1-2) are used, they indicate the wind

5、ing and the extreme terminals of the windings.) Electrical ratings: Primary voltage: (1-2): 57.5 volts rms, 400 Hz. (1-3): 99.7 volts rms, 400 Hz (1-4): 115 volts rms, 400 Hz Volt-ampere rating: 51. Secondary voltage: (5-6): 12.6 volts rms. (7-9): 12.6 volts rms ct. Secondary current: (5-6): 2 amper

6、es rms. (7-9): 2 amperes rms. DC resistance: (1-4): 3.5 ohms maximum. (5-6): 0.112 ohm maximum. (7-9): 0.102 ohm maximum. Working voltage (peak): 535 volts. Design and construction: Dimensions and configuration: See figure 1. Duty cycle: Continuous. Case: Metal. Material: Steel. Terminals: Solder ty

7、pe, United Transformer Company part number NC-3L, or equivalent. Terminal height: 0.437 inch maximum. Weight: 2.2 pounds maximum. Altitude: 50,000 feet maximum. Operating temperature range: -55C to +130C. Shock (specified pulse): MIL-STD-202, method 213, test condition H. Terminal strength: MIL-STD-

8、202, method 211, test condition A, 5 pounds. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-27/180B 4 Dielectric withstanding voltage (at sea level): 1500 volts rms. Electrical characteristics: No load: With 115 volts, 400 Hz across (1-4), c

9、urrent in (1-4) shall not exceed 90 milliamperes and the power in (1-4) shall not exceed 5 watts: Voltage across (5-6): 13.05 volts 2 percent. Voltage across (7-9): 13.05 volts ct 2 percent. Rated load: With 115 volts, 400 Hz across (1-4): Voltage across (5-6): 12.6 volts 2 percent. Voltage across (

10、7-9): 12.6 volts ct 2 percent. DC resistance: (1-4): 3.5 ohms maximum. (5-6): 0.112 ohm maximum. (7-9): 0.102 ohm maximum. Polarity: Additive, with terminals (4-5) and (6-7) connected. Temperature rise: +40C maximum with 115 volts rms, 400 Hz across (1-4) at an ambient temperature of +90C. Marking l

11、ocation: See figure 1. Part or Identifying Number (PIN): M27/180-01. The term Part or Identifying Number (PIN) is equivalent to the term part number which was previously used in this specification. Changes from previous issue. The margins of this specification are marked with vertical lines to indic

12、ate 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 cautioned to evaluate the requirements of this document based on the entire content irrespe

13、ctive 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 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-27/180B 5 Custod

14、ians: Preparing activity: Army CR DLA CC Navy EC Air Force 85 (Project 5950-2008-022) DLA - CC Review activities: Army AR, CR4 Navy AS, MC, OS, SH 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-,-,-