1、AMSC N/A 1 of 6 FSC 5945 INCH-POUND MS27997N 27 November 2003 SUPERSEDING MS27997M(USAF) 26 October 1993 DETAIL SPECIFICATION SHEET RELAYS, ELECTROMAGNETIC, 25 AMPERES, 3 PST N.O. TYPE I, HERMETICALLY SEALED INACTIVE FOR NEW DESIGN AFTER 29 FEBRUARY 2000. NO SUPERSEDING SPECIFICATION. This specifica
2、tion is 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 reproduct
3、ion or networking permitted without license from IHS-,-,-MS27997N 2 Inches mm Inches mm Inches mm .010 0.25 .297 7.54 1.812 46.02 .031 0.79 .328 8.33 2.000 50.80 .047 1.19 .375 9.52 2.167 51.21 .063 1.60 .391 9.93 2.578 65.48 .079 2.01 .438 11.13 2.687 68.25 .138 3.51 .625 15.88 2.897 73.58 .140 3.5
4、6 .656 16.66 3.250 82.55 .190 4.83 .750 19.05 3.337 84.76 .210 5.33 .812 20.62 3.734 94.84 .218 5.54 1.156 29.36 FIGURE 1. Dimensions and configuration - Continued.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MS27997N 3 NOTES: 1. Dimensions are in
5、 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. Terminal covers and barriers may be required at power or auxiliary terminals. FIGURE 1. D
6、imensions and configuration - Continued. REQUIREMENTS: Dimensions and configuration: See figure 1. Dash numbers and general characteristics: See table I. Contact data: Load ratings: See table II. Maximum contact drop, initial: 0.150 V. After life test: 0.175 V. Overload current (NO): 200 amperes. Ru
7、pture current (NO): 250 amperes. Coil data: See table III. Duty rating: Continuous. RFI specification: MIL-STD-461 (applicable to coil circuits of ac operated relays). Electrical data: Minimum insulation resistance: Initial: 100 megohms. After life or environmental tests: 50 megohms. Dielectric stre
8、ngth: 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 1,500 1,000 1,125 Auxiliary contacts 1,250 1,500 1,000 1,125 All other points 1,250 1,800 1,000 1,350 Altitude, 1 minute: 28 V dc 115 V ac Coil to case 500 500 Auxiliary contacts 500 500 All
9、 other points 700 700 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MS27997N 4 Environmental characteristics: Temperature range: -70C to +125C. Maximum altitude rating: 80,000 feet. Shock g level: 50 gs. Duration: 6-9 ms. Maximum duration contact o
10、pening: 2 ms. Vibration (sinusoidal): See table IV. Nonoperate: G-level: 15 gs. Frequency range curve: 20 to 2,000 Hz. Acceleration: 15 gs. Terminal strength (high temperature pull and torque test): Not applicable. Qualification by similarity: See MIL-PRF-6106. Group B and group C testing are not re
11、quired. The manufacturer shall notify the qualifying activity in the event of any design or construction changes, and shall impose additional testing requirements as necessary. Part or Identifying Number (PIN): MS27997- (plus applicable dash number from table I). TABLE I. Dash numbers and general ch
12、aracteristics. MS PIN- MS27997- Type Coil type Terminal type Mounting or mating socket Auxiliary terminals Max weight in pounds 1/ D1 I dc Stud Flange None 1.20 D2 I dc Stud Flange Yes 1.25 A1 I ac Stud Flange None 1.25 A2 I ac Stud Flange Yes 1.30 1/ Weights include covers and barriers.Provided by
13、IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MS27997N 5 TABLE II. Rated contact load (amperes per pole) (case grounded). 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 6
14、0 Hz 400 Hz 60 Hz 400 Hz 60 Hz 400 Hz 60 Hz See appropriate notes Resistive 50 25 5 5 25 5 25 Inductive 10 25 5 5 25 5 25 Motor 50 25 25 25 Lamp 50 1 1 1 Transfer, load 2/ Mechanical life reduced current 100 6.3 1.25 1.25 6.3 1.25 6.3 Mixed loads 50 Applicable according to MIL-PRF-6106 1/ Absence of
15、 value indicates relay is not rated for 3 phase applications. 2/ Transfer load indicates relay is suitable for transfer between unsynchronized ac power supplies at rating indicated. TABLE III. Operating characteristics. Coil data Time - (milliseconds maximum) Rated Max Max pick-up voltage Contact Bo
16、unce 3/ Main AuxPIN MS 27997- Coil Volts 1/ Freq Hz Res 10% Volts Amp Nor-mal 2/ High Temp test Cont cur-rent test Hold vol- tage 2/ Drop out volt- age 2/ Oper-ate 3/ Rel-ease 4/ NO NC NO NC D1 X1,X2 28 dc 51 29 .6 18 21 22.5 7.0 1.5 25 10 2 D2 X1,X2 28 dc 51 29 .6 18 21 22.5 7.0 1.5 25 10 2 4 4 A1
17、X1,X2 115 60/ 400 N/A 124 .2 90 100 104 40 10 30 50 2 A2 X1,X2 115 60/ 400 N/A 124 .2 90 100 104 40 10 30 50 2 4 4 1/ CAUTION: Use of any coil voltage less than rated coil voltage will compromise the operation of the relay. 2/ Over the temperature range. 3/ With rated coil voltage. 4/ From rated coi
18、l voltage. TABLE IV. Vibration levels (sinusoidal). Frequency PIN MS27997- 5-10 Hz 10-55 Hz 55-750 Hz 750-1500 Hz D1 .08 DA .06 DA 15 gs 12 gs D2 .08 DA .06 DA 10 gs 10 gs A1 .08 DA .06 DA 15 gs 12 gs A2 .08 DA .06 DA 10 gs 10 gs Provided by IHSNot for ResaleNo reproduction or networking permitted w
19、ithout license from IHS-,-,-MS27997N 6 NOTES Referenced documents. In addition to MIL-PRF-6106, this specification 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 Documen
20、t Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094). SPECIFICATIONS Department of Defense MS27243 - Relay, 10 Amp, 4PDT, Sealed, Class O STANDARDS Department of Defense MIL-STD-461 - Requirements for the Control of Electromagnetic Interference Characteristics of Subsystems an
21、d Equipment Custodians: Preparing activity:Navy - AS DLA - CC Air Force - 11 DLA - CC (Project 5945-1214-20) 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-,-,-
