1、AMSC N/A FSC 5945 INCH-POUND MS27418L 30 May 2013 SUPERSEDING MS27418K 27 November 2003 DETAIL SPECIFICATION SHEET RELAYS, ELECTROMAGNETIC, 25 AMPERES, 3 PST-NO, TYPE I, HERMETICALLY SEALED, HOOK AND SCREW TERMINALS, STUD AND BRACKET MOUNTED Inactive For New Design After 15 November 2002. No Superse
2、ding Specification. This specification is approved for use by all Departments and Agencies of the Department of Defense. The requirements for acquiring the product described herein shall consist of this specification sheet and the latest issue of MIL-PRF-6106. FIGURE 1. Dimensions and configuration.
3、 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MS27418L 2 FIGURE 1. Dimensions and configurations - Continued. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MS27418L 3 FIGURE 1. Dimensions and con
4、figurations - Continued. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MS27418L 4 Inches mm Inches mm Inches mm .001 0.03 .138 3.51 1.12 28.5 .002 0.05 .152 3.86 1.187 30.15.005 0.13 .173 4.39 1.406 35.71 .03 0.8 .187 4.75 1.465 37.21.031 0.79 .225
5、 5.72 1.50 38.1 .032 0.81 .244 6.20 1.531 38.89.040 1.02 .375 9.52 1.550 39.37 .06 1.5 .38 9.7 1.680 42.67.080 2.03 .593 15.06 2.000 50.80 .093 2.36 1.062 26.97 2.41 61.22.500 63.50 NOTES: 1. Dimensions are in inches. 2. Metric equivalents are given for general information only. 3. Unless otherwise
6、specified, tolerance is .010 (0.25 mm). 4. A, B, and C contacts capable of accepting material from SAE-AS25036; SAE-AS25036-53 lugs, X1 and X2 contacts capable of accepting SAE-AS25036-7 or -2 lugs. 5. Terminal numbers need not appear on relay headers provided there is affixed to the relay a suitabl
7、e legible circuit diagram that identifies each terminal location specified. 6. In the event of a conflict between the text of this specification sheet and the references cited herein, the text of this specification sheet shall take precedence. 7. Tin/lead plating over copper plating with a minimum l
8、ead content of 3%. FIGURE 1. Dimensions and configurations - Continued. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MS27418L 5 TABLE I. Dash numbers and characteristics. Dash number MS27418- Type Coil Circuit Terminal type Mounting or mating sock
9、et Max weight in pounds 1A I ac A Solder hook Stud .501B I dc A Solder hook Stud .50 1C I ac A Solder hook Stud .502A I ac A Screw Bracket .60 2B I dc A Screw Bracket .60 2C I ac A Screw Bracket .60 1D I dc B 1/ 2/ Solder hook Stud .51 2D I dc B 1/ 2/ Screw Bracket .61 1/ Transient voltage (back emf
10、) 42 V dc maximum. 2/ Diodes shall have a peak inverse voltage of 600 V dc minimum. TABLE II. Operating characteristics. Part no. MS 27418- Coil data Time - (milliseconds maximum) Coil Nominal Max Max pick-up voltage Hold vol- tage 3/ Drop out volt- age 3/ Oper-ate 4/ Rel-ease 5/ Contact Bounce Volt
11、s 1/ Freq Hz Res +10% Volts Amp Nor- mal 3/ High temp test Cont cur-rent test Main Aux NO NC NO NC1A X1,X2 115 400 N/A 122 .055 95 100 108 40 5.0 25 50 2 - - - 2A X1,X2 115 400 N/A 122 .055 95 100 108 40 5.0 25 50 2 - - - 1B X1,X2 28 dc 160 29 2/ .25 18 19.5 22.5 7.0 1.5 20 10 2 - - - 2B X1,X2 28 dc
12、 160 29 2/ .25 18 19.5 22.5 7.0 1.5 20 10 2 - - - 1C X1,X2 115 50/ 60 N/A 122 .06 95 100 108 40 5.0 25 50 2 - - - 2C X1,X2 115 50/ 60 N/A 122 .06 95 100 108 40 5.0 25 50 2 - - - 1D X1,X2 28 dc 160 29 2/ .25 18 19.5 22.5 7.0 1.5 20 10 2 - - - 2D X1,X2 28 dc 160 29 2/ .25 18 19.5 22.5 7.0 1.5 20 10 2
13、- - - 1/ Caution: Use of any coil voltage less than nominal coil voltage will compromise the operation of the relay. 2/ Maximum coil voltage shall be +32 V dc when maximum ambient temperature does not exceed 85C. 3/ Over the temperature range. 4/ With nominal coil voltage. 5/ From nominal coil volta
14、ge. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MS27418L 6 TABLE III. Rated contact load (amperes per pole) (case grounded). Type of load Life operating cycles x 103 28 V dc 115 V ac, 1 phase 115/200 V ac, 3 phase 1/ See appropriatenotes Main Aux
15、 Main Aux Main Aux NO NC NO NC 400 Hz 50/60Hz 400 Hz 60 Hz 400 Hz 50/60 Hz 400 Hz 60 Hz Resistive 50 25 25 25 25 25 Inductive 10 25 25 25 25 2/ Inductive 10 15 Motor 50 20 20 12 20 12 Lamp 50 10 10 10 10 10 Transfer load 3/ Mechanical life reduced current 200 6.3 6.3 6.3 6.3 6.3 Mixed loads Applicab
16、le per specification 1/ Absence of value indicates relay is not rated for 3 phase applications. 2/ 0.7 pF, inductive. 3/ Transfer load indicates relay is suitable for transfer between unsynchronized ac power supplies at rating indicated. Environmental characteristics: Temperature range: -70C to +125
17、C. Maximum altitude rating: 80,000 feet. Shock g-level: 50 gs. Duration: 11 ms. Max duration contact opening: 2 ms. Vibration - sinusoidal: Operating G-level 10 gs. Frequency range 5 - 1,000 Hz. Non-operation. G-level: 15 gs. Frequency range: 20 to 2,000 Hz. Acceleration 10 gs. Provided by IHSNot fo
18、r ResaleNo reproduction or networking permitted without license from IHS-,-,-MS27418L 7 Electrical characteristics: Insulation resistance, initial: 100 megohms. After life or environmental tests: 50 megohms. Dielectric strength (sea level): Initial After life tests Coil to case 1,250 V rms 1,000 V r
19、ms Aux contacts N/A N/A All other points 1,500 V rms 1,125 V rms Dielectric strength (altitude): 80,000 ft Coil to case N/A 500 V rms Aux contacts N/A All other points N/A 500 V rms Maximum contact drop initial: 0.150 volt. After life test: 0.175 volt. Overload current: 80 amperes dc, 120 amperes ac
20、. Rupture current: 100 amperes dc, 150 amperes ac. Duty rating: Continuous. RFI specification: MIL-STD-461. (applicable to coil circuits of ac operated relays) Conformance inspection. Group B and group C testing are not required. The manufacturer shall notify the qualifying activity in the event of
21、any design or construction changes, and shall impose additional testing requirements as necessary. Qualification by similarity: See MIL-PRF-6106. NOTES Changes from previous issue. The margins of this specification are marked with vertical lines to indicate where changes from the previous issue were
22、 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 irrespective of the marginal notations and relationsh
23、ip to the last previous issue. Referenced documents. In addition to MIL-PRF-6106, this document references the following: SAE-AS25036 MIL-STD-461 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MS27418L 8 Custodians: Preparing activity: Navy - AS DLA
24、 - CC Air Force - 85 DLA - CC (Project 5945-2013-025) Review activities: Air Force - 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 the information above using the ASSIST Online database at https:/assist.dla.mil/. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
