1、AMSC N/A 1 of 6 FSC 5945 INCH-POUND MS27242K 27 November 2003 SUPERSEDING MS27242J 9 October 1990 DETAIL SPECIFICATION SHEET RELAYS, ELECTROMAGNETIC, 100 AMPERES, 1 PST N. O. TYPE I, HERMETICALLY SEALED INACTIVE FOR NEW DESIGN AFTER 1 FEBRUARY 2000. NO SUPERSEDING SPECIFICATION. This specification i
2、s approved for use by all Departments and Agencies of 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 1. Dimensions and configuration. Provided by IHSNot for ResaleNo reproduction or
3、 networking permitted without license from IHS-,-,-MS27242K 2 FIGURE 1. Dimensions and configuration - Continued. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MS27242K 3 Inches mm Inches mm Inches mm .010 0.25 .407 10.34 2.063 52.40 .031 0.79 .625
4、 15.88 2.140 54.36 .063 1.60 .656 16.66 2.687 68.25 .094 2.39 .812 20.62 3.250 82.55 .138 3.51 .844 21.44 3.337 84.76 .210 5.33 .985 25.01 3.734 94.84 .218 5.54 1.250 31.75 .250 6.35 1.469 37.31 .297 7.54 2.000 50.80 .312 7.92 2.016 51.21 NOTES: 1. Dimensions are in inches. 2. Metric equivalents are
5、 given for general information only. 3. Unless otherwise specified, tolerance is .031 (0.79 mm). 4. Coil and auxiliary terminals may use additional washer for terminal seat. 5. Terminal covers and barriers may be required at power or auxiliary terminals. 6. In the event of a conflict between the tex
6、t of this specification and the references cited herein, the text of this specification shall take precedence. 7. Referenced Government documents of the issue listed in that issue of the Department of Defense Index of Specifications and Standards (DoDISS) specified in the solicitation forms a part o
7、f this standard to the extent specified herein. 8. For detail information, see tables I through IV. FIGURE 1. Dimensions and configurations - Continued. TABLE I. Relay characteristics. PIN number MS27242- Type Coil type Terminal type Mounting or mating socket Auxiliary contacts Max weight wt. lbs. 1
8、/ 1 I dc Stud Flange None 1.20 2 I dc Stud Flange Yes 1.25 3 I ac Stud Flange None 1.25 4 I ac Stud Flange Yes 1.30 1/ Weights include terminal barriers and covers. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MS27242K 4 TABLE II. Operating charac
9、teristics. Coil data Time - (milliseconds maximum) Rated Max Max pick-up voltage Contact Bounce 1/ Main Aux PIN MS 27242- Coil Volts 2/ Freq Hz Res 10% Volts Amp Nor- mal 3/ High temptest Cont cur-rent test Hold vol- tage 3/ Drop out volt- age 3/ Oper-ate 1/ Rel-ease 4/ NO NC NO NC 1 X1,X2 28 dc 51
10、29 .6 18 21 22.5 7.0 1.5 25 10 2 - - - 2 X1,X2 28 dc 51 29 .6 18 21 22.5 7.0 1.5 25 10 2 - 2 2 3 X1,X2 115 60/ 400 N/A 124 .2 90 100 104 40 10 25 50 2 - - - 4 X1,X2 115 60/ 400 N/A 124 .2 90 100 104 40 10 25 50 2 - 2 2 1/ With rated coil voltage 2/ Caution: Use of any coil voltage less than rated co
11、il voltage will compromise the operation of the relay. 3/ Over the temperature range. 4/ From rated coil voltage. Qualification by similarity: See MIL-PRF-6106. Part or Identifying Number (PIN): MS27242- (plus dash number from table I). TABLE III. Rated contact load (amperes per pole) (case grounded
12、). 28 V dc 115 V ac, 1 phase 115/200 V ac, 3 phase 1/ 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 See appropriate notes Resistive 50 100 - 5 5 100 - 5 - - - - - Inductive 10 100 - 5 5 100 - 5 - - - - - Inductive M
13、otor 50 100 - - - - - - - - - - - Lamp - - - 1 1 - - 1 - - - - - Transfer load 2/ Mechanical life reduced current 100 25 - 1.25 1.25 25 - 1.25 - - - - - Mixed loads 50 Applicable in accordance with MIL-PRF-6106 1/ Absence of value indicates relay is not rated for 3-phase application. 2/ Transfer loa
14、d indicates relay is suitable for transfer between unsynchronized ac power supplies at rating indicated. TABLE IV. Vibration level. PIN MS27742- 5 - 10 Hz 10 - 55 Hz 55 - 250 Hz 250-500 Hz 500-1500 Hz 1 .08 DA .06 DA 15 g 15 g 12 g 2 .08 DA .06 DA 10 g 10 g 10 g 3 .08 DA .06 DA 15 g 15 g 15 g 4 .08
15、DA .06 DA 10 g 10 g 10 g Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MS27242K 5 Environmental characteristics: Temperature range -70C to +125C Maximum altitude rating 80,000 ft Shock G-level 50 gs Duration 6-9 ms Maximum duration contact opening
16、2 ms Vibration - sinusoidal (See table IV) Vibration - random N/A Acceleration 15 gs Electrical characteristics: Minimum insulation resistance, initial 100 megohms After life or environmental tests 50 megohms Dielectric strength (sea level) (see table V) 2-5 seconds Group B and Group C inspections a
17、re not required. Table V. Dielectric strength (sea level). Initial After life tests Dielectric strength 28 V dc 115 V ac 28 V dc 115 V ac Coil to case 1,250 1,500 1,000 1,125 Aux contacts 1,250 1,000 All other points 1,800 1,350 Dielectric strength (altitude) (see table VI) 1 minute. TABLE V. Dielec
18、tric strength (altitude). Dielectric strength 28 V dc 115 V ac Coil to case 500 500 Aux contacts 500 500 All other points 700 700 Qualification by similarity: See MIL-PRF-6106. Maximum contact drop initial 0.150 volts After life test 0.175 volts Overload current (NO) 800 amperes Provided by IHSNot f
19、or ResaleNo reproduction or networking permitted without license from IHS-,-,-MS27242K 6 Rupture current (NO) 1,000 amperes Duty rating Continuous RFI specification MIL-STD-461 (Applicable to coil circuits of ac operated relays.) NOTES Referenced documents. In addition to MIL-PRF-6106, this specific
20、ation sheet references the following documents. (Government documents are available on line at http:/assist.daps.dla.mil/quicksearch or www.dodssp.daps.mil or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094). STANDARDS Department of Defense
21、MIL-STD-461 - Requirements for the Control of Electromagnetic Interference Characteristics of Subsystems and Equipment Custodians: Preparing activity:NAVY - AS DLA - CC Air Force - 11 DLA - CC (Project 5945-1221-16) Review activities: Air Force - 99 Navy EC NOTE: The activities listed above were int
22、erested 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-,-,-
