1、 AMSC N/A FSC 5945 INCH-POUND MS24178H w/AMENDMENT 2 22 October 2004 SUPERSEDING MS24178H w/AMENDMENT 1 21 July 2003 DETAIL SPECIFICATION SHEET RELAYS, ELECTROMAGNETIC, 55 AMPERES, 2PST, (N.O.) TYPE II, NONHERMETICALLY SEALED This specification is approved for use by all Departments and Agencies of
2、the Department of Defense. The requirements for acquiring the relay described herein shall consist of this specification and the latest issue of MIL-PRF-6106. FIGURE I. Outline drawing (for details see tables I and II). Provided by IHSNot for ResaleNo reproduction or networking permitted without lic
3、ense from IHS-,-,-MS24178H w/AMENDMENT 2 2 Inches mm Inches mm Inches mm Inches mm .001 .03 .138 3.51 .312 7.92 1.968 49.99 .010 .25 .190 4.83 .375 9.53 2.031 51.59 .031 .79 .205 5.21 .468 11.89 2.375 60.33 .062 1.57 .215 5.46 .500 12.70 2.625 66.68 .093 2.36 .218 5.54 1.100 27.94 2.781 70.64 .109 2
4、.77 .270 6.86 1.687 42.85 3.062 77.77 NOTES: 1. Dimensions are in inches. 2. Metric equivalents are given for general information. 3. Unless otherwise specified, tolerances are .031 inch (0.79 mm). 4. Additional flat washer may be used for terminal seat. 5. Part No. MS24178-D1 replaces part No. MS24
5、178-1. 6. For design feature purposes, this specification takes precedence over procurement documents referenced herein. 7. Referenced Government documents of the issue listed in Assist Online (http:/assist.daps.dla.mil) or Assist Quick Search (http:/assist.daps.dla.mil/quicksearch) specified in the
6、 solicitation form a part of this specification to the extent specified herein. 8. Cadmium or cadmium compounds are prohibited on external hardware. 9. Spring washer on drawing is a spring lock washer. FIGURE I. Outline drawing (for details see tables I and II) - Continued. TABLE I. Dash numbers and
7、 characteristics. MS part number Type Coil Terminal type Mounting or mating socket Auxiliary contacts Max weight in pounds MS24178-D1 II dc Stud Bracket N/A .75 TABLE II. Operating characteristics. Coil data Time - (milliseconds maximum) 2/ Nominal Max Max pick-up voltage Bounce Main Aux PIN MS 2417
8、8- Coil Volts 1/ Freq Hz Res minimum 25C Volts AmpNor-mal1/ Hightemptest Contcur-rent test Dropout vol-tage1/ Hold vol-tage1/ Oper-ate 3/ Rel-ease 4/ NO NC NO NCD1 X1,X2 28 dc 59 29 .50 18 21 22.5 1.5 7 30 10 3.5 - - - Provided by IHSNot for ResaleNo reproduction or networking permitted without lice
9、nse from IHS-,-,-MS24178H w/AMENDMENT 2 3 TABLE III. Rated contact load (amperes per pole) case grounded. 28 V dc 115 V ac, 1 phase 115/200 V ac, 3 phase 3/ Main Aux Main Aux Main Aux Type of load Life operating cycles x 103NO NC NO NC 400 Hz 60 Hz 400 Hz 60 Hz 400 Hz 60 Hz 400 Hz 60 Hz Resistive 50
10、 55 55 Inductive 10 40 Motor 50 40 35 Lamp Transfer load Mechanical life reduced current 100 14 Mixed loads 50 5 NOTES: 1/ Over temperature range. 2/ With nominal coil voltage. 3/ Absence of value indicates relay is not rated for 3 phase applications. Environmental characteristics: Temperature range
11、: -55C to +71C. Maximum altitude rating: 50,000 ft. Shock G-level: 25 gs. Duration: 6-9 ms. Max duration contact opening: 2 ms. Vibration - sinusoidal: (see table IV). TABLE IV. Vibration levels. Dash number 5-10 Hz 10-55 Hz 55-250 Hz 250-500 Hz 500-1,500 Hz D1 .08 DA .06 DA 2 gs 2 gs Vibration - ra
12、ndom: N/A. Applicable specification: N/A. Power spectral density: N/A. Rms g min: N/A. Frequency range: N/A. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MS24178H w/AMENDMENT 2 4 Curve: N/A. High shock: N/A. Acceleration: 10 gs. Electrical charact
13、eristics: Min insulation resistance, initial: 100 megohms. After life or environmental tests: 50 megohms. Dielectric strength (sea level): 2-5 seconds. Initial After life tests 28 V dc 115 V ac 28 V dc 115 V ac Coil to case 1,250 V rms N/A 1,000 V rms N/A Aux contacts 1,250 V rms N/A 1,000 V rms N/A
14、 All other points 1,250 V rms 1,500 1,000 V rms 1,125 Dielectric strength (altitude): 1 minute. 28 V dc 115 V ac Coil to case 500 500 Aux contacts 500 500 All other points 500 500 Max contact drop initial: 0.150 volt. After life test: 0.175 volt. Overload current (NO) 440 amperes. Rupture current (N
15、O) 550 amperes. Duty rating Continuous RFI specification MIL-STD-461 (Applicable to coil circuits of ac operated relays). Qualification by similarity: See MIL-PRF-6106. Referenced documents. In addition to MIL-PRF-6106, this document references the following: MIL-STD-461 The margins of this specific
16、ation are marked with vertical lines to indicate modifications generated by this amendment. 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 docum
17、ent based on the entire content irrespective of the marginal notations. Custodian: Preparing Activity Navy - AS DLA - CC Air Force - 11 DLA - CC (Project 5945-1277) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MS24178H w/AMENDMENT 2 5 Review activ
18、ity: Navy - EC 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 ASSIST Online database at www.dodssp.daps.mil. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
