1、INCH-POUND MS24143X W/AMENDMENT 1 16 March 2004 SUPERSEDING MS24143X 15 April 2003 DETAIL SPECIFICATION SHEET RELAYS, ELECTROMAGNETIC, 3 PST (N.O.), 25 AMPERES, TYPE I, HERMETICALLY SEALED This specification is approved for use by all Departments and Agencies of the Department of Defense. The requir
2、ements for acquiring the relay described herein shall consist of this specification and the latest issue of MIL-PRF-6106. FIGURE 1. Dimensions and configurations.AMSC N/A FSC 5945 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MS24143X w/AMENDMENT 1
3、 2 Inches mm Inches mm Inches mm .010 0.25 .313 7.95 2.313 58.75 .031 0.79 .328 8.33 2.687 68.25 .063 1.60 .438 11.13 2.887 73.33 .093 2.36 .468 11.89 3.250 82.55 .138 3.51 .625 15.88 3.282 83.36 .190 4.83 1.000 25.40 3.337 84.76 .218 5.54 1.500 38.10 3.732 94.79 .266 6.76 1.781 45.24 4.232 107.49 .
4、297 7.54 1.906 48.41 NOTES: 1. Dimensions are in inches. 2. Metric equivalents are 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. In the event of a conflict between the te
5、xt of this specification and the references cited herein, the text of this specification shall take precedence. 6. 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
6、of this standard to the extent specified herein. 7. Cadmium or cadmium compounds are prohibited on external hardware. A transition period to non-cadmium hardware is authorized for up to 1 year from the date of this revision. 8. Spring washer on drawing is a spring lock washer. FIGURE 1. Dimensions a
7、nd configurations - Continued. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MS24143X w/AMENDMENT 1 3 REQUIREMENTS: Dimensions and configurations: See figure 1. Environmental characteristics: Temperature range 1/: -70C to +125C Max altitude rating:
8、 80,000 ft Shock G-level: 25 gs Duration: 6-9 ms Max duration contact opening: 2 ms Vibration - Sinusoidal: See table I. Vibration - Random: Not applicable. High shock: Not applicable. Acceleration 15 gs Electrical characteristics (See tables II, III, IV): Minimum insulation resistance, initial: 100
9、 megohms. After life or environmental tests: 50 megohms. Dielectric strength (sea level): 2-5 seconds. Initial 2/ After life tests 2/ 28 V dc 115 V ac 28 V dc 115 V ac Coil to case 1,250 V rms 1,500 1,000 V rms 1,125 Aux contacts 1,250 V rms 1,500 1,000 V rms 1,125 All other points 1,250 V rms 1,800
10、 1,000 V rms 1,350 Dielectric strength (altitude) 4/: 1 minute. Initial After life tests Coil to case 500 V rms 500 V rms Aux contacts 500 V rms 500 V rms All other points 700 V rms 700 V rms Max contact drop initial: 0.150 volt. After life test: 0.175 volt. Overload current (NO): 200 amperes dc, 3/
11、. Rupture current (NO): 250 amperes dc, 3/. 1/ Coils operated at either 50, 60, or 400 Hz require ambient temperature not to exceed 71C maximum. 2/ For A3 and A4, coil terminals X1 and X2 must be shorted together for all dielectric testing between coil to case, coil to main or auxiliary contacts, an
12、d coil to all other points. 3/ For A3 and A4, rupture and overload current (NO) is 75 A. 4/ Use MS27243-1 terminal cover during dielectric testing at altitude.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MS24143X w/AMENDMENT 1 4 Duty rating: Conti
13、nuous. RFI specification: MIL-STD-461 (Applicable to coil circuits of ac operated relays). TABLE I. Vibration levels. Dash number 5-10 Hz 10-55 Hz 55-250 Hz 250-500 Hz 500-1,500 Hz D1 6 gs 6 gs D2 4 gs 3 gs D3 4 gs 3 gs A3,A4 .06 DA .06 DA 10 gs 4 gs 3 gs TABLE II. Operating characteristics. Coil da
14、ta Time - (milliseconds maximum) Rated Max Max pick-up voltageContact Bounce Main Aux PIN MS 24143- Coil Volts 1/ Freq Hz Res +15% -10% VoltsAmp Nor-mal2/ High temp test Cont currenttest Dropout volt-age 2/ 3/Hold volt- age 2/ Oper-ate 4/ Rel-ease 5/ NO NC NO NCD1 X1,X2 28 dc 52 29 0.6 18 21 22.5 1.
15、5 7.0 25 10 2 D2, D3 X1,X2 28 dc 52 29 0.6 18 21 22.5 1.5 7.0 25 10 2 4 4 A3 X1,X2 115 50/60/400 6/ 124 0.225 90 100 104 10 40 30 65 5 A4 X1,X2 115 60/60/400 6/ 124 0.225 90 100 104 10 40 30 65 5 6 6 1/ CAUTION: Use of any coil voltage less than rated coil voltage will compromise the operation of th
16、e relay. 2/ Over the temperature range. 3/ At 50/60 Hz, chattering may occur at or near dropout voltage when voltage is slowly decreased. 4/ With rated coil voltage. 5/ From rated coil voltage. 6/ Coils will operate on either 50, 60, or 400 Hz except ambient temperature must be derated to +71C maxim
17、um. TABLE III. Rated contact load (amperes per pole) case grounded (applicable to -D1, -D2, -A3, and -A4). 28 V dc 115 V ac, 1 phase 115/200 V ac, 3 phase 1/ Main Aux Main Aux Main 2/ AuxType of load Life operating cycles x 103NO NC NO NC 400 Hz 50/60 Hz 400 Hz 50/60 Hz 400 Hz 50/60 Hz 400 Hz 50/60
18、Hz Resistive 50 25 5 5 25 25 5 25 15 Inductive 50Inductive 10 3/ 25 5 5 25 5 25 12.5 Motor 50 25 25 15 25 12.5 Lamp 50 .75 .75 .75Trnsfer load Mechanical life reduced current 100 6.25 1.25 1.25 6.25 6.25 1.25 6.25 3.75 Mixed loads 50 5 Per spec Per spec 1/ Absence of value indicates relay is not rat
19、ed for 3-phase application. 2/ Derated contact loads at 50/60 Hz are applicable to A3 and A4 only. 3/ Derate cycles by 50 percent for A3 and A4 only. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MS24143X w/AMENDMENT 1 5 TABLE IV. Rated contact loa
20、d (amperes per pole) case grounded (applicable to D3 only). 28 V dc 115 V ac, 1 phase 115/200 V ac, 3 phase 1/ See appro-priate notes 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 100 12 1.25 1.25 12 1.25
21、12 Inductive 100 12 .75 .75 12 .75 12 Motor 100 6 6 6 Lamp Trnsfer load 2/ Mechanical life reduced current 100 3 .25 .25 3 .25 3 Mixed loads 100 1.2 Per specPer spec 1.2 1.2 1/ Absence of value indicates relay is not rated for 3-phase application. 2/ Transfer load indicates relay is suitable for tra
22、nsfer between unsynchronized ac power supplies at rating indicated. Part or identification number (PIN): MS24143- (plus dash number from table V). General characteristics: See table V. TABLE V. Dash numbers and characteristics. Dash number MS24143- Type Coil Terminal type Mounting or mating socket A
23、uxiliary contacts Max weight in pounds D1 dc None 1.5 D2 Yes 1.7D3 Yes 1.7 A3 ac None 1.7A4 I Stud Flange Yes 1.9 1/ Dash number A1 and A2 have been superseded by A3 and A4. 2/ Weights include covers and barriers. Supersession data: MS24143-D3 supersedes MS21330-D2. Qualification by similarity: See
24、MIL-PRF-6106. Referenced documents. In addition to MIL-PRF-6106, this document references the following: MS27243 MIL-STD-461 The margins of this specification are marked with vertical lines to indicate modifications generated by this amendment. This was done as a convenience only and the Government
25、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. Custodians: Preparing activity: Navy - AS DLA - CC Air Force - 11 DLA - CC
26、(Project 5945-1224) 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-,-,-
