1、AMSC N/A 1 of 4 FSC 5945 INCH-POUND MS27750H 27 November 2003 SUPERSEDING MS27750G 15 December 2001 DETAIL SPECIFICATION SHEET RELAYS, ELECTROMAGNETIC, 50 AMPERES, 3 PDT-NO., CENTER OFF, HERMETICALLY SEALED This specification is approved for use by all Departments and Agencies of the Department of D
2、efense. 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 networking permitted without license from IHS-,-,-MS27750H 2 Inches mm .0
3、02 0.05 .005 0.13 .010 0.25 .10 2.5 .170 4.32 .203 5.16 .375 9.52 .437 11.10 2.000 50.80 2.44 62.0 2.50 63.5 3.13 79.5 NOTES: 1. Dimensions are in inches. 2. Unless otherwise specified, tolerance is .031 (0.79 mm). 3. In the event of a conflict between the text of this specification and the referenc
4、es cited herein, the text of this specification shall take precedence. 4. 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 form a part of this standard to the extent specified h
5、erein. 5. Weight includes terminal barriers. 6. Suppression level - the maximum induced transient voltage (back EMF) shall be 42 volts. 7. Metric equivalents are given for general information only. MS part number Type Coil Terminal type Mounting Max weight in pounds MS27750-1 I dc Stud Plate .969 MS
6、27750-2 I dc Stud Plate .969 FIGURE 1. Dimensions and configurations - Continued. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MS27750H 3 Operating characteristics. Coil data Time - (milliseconds maximum) Nominal Max Max pick-up voltage Contact Bo
7、unce Main AuxPart no. MS 27750- Coil Volts 1/ Freq Hz Res Min Volts Amp Nor- mal 1/ High temptest Cont cur-rent test Hold vol- tage 1 Drop out volt- age 1/ Oper-ate 2/ Rel-ease 3/ NO NC NO NC 1 X1,X2 28 dc 150 29 .190 18 20 21 7.0 1.5 35 25 3 - - - 2 X1,X2 28 dc 150 29 .190 18 20 21 7.0 1.5 35 25 3
8、 - - Rated contact load (amperes per pole) case grounded. 28 V dc 115 V ac, phase 115/200 V ac, 3 phase 4/ 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 400 Hz 60 Hz See appropriate notes Resistive 2/ 50 25 50 50 Inductive 20 15 Indu
9、ctive 50 50 50 Motor 40 15 30 30 Lamp 50 10 15 15 Transfer load 10 12.5 12.5 5/ Mechanical life reduced current 200 7 14 14 Mixed loads 50 1 5 5 1/ Over temperature range. 2/ With nominal coil voltage. 3/ From nominal coil voltage. 4/ Absence of value indicates relay is not rated for 3 phase applica
10、tions. 5/ Transfer load indicates relay is suitable for transfer between unsychronized ac power supplies at rating indicated. Environmental characteristics. Temperature range -55C to +71C. Max altitude rating 50,000 ft Shock g-level 50 gs Duration 6 ms. Max duration contact opening 10 s. Vibration s
11、inusoidal G-level 10 gs. Frequency range 70-2,000 Hz. Acceleration: 15 gs.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MS27750H 4 Electrical characteristics: Insulation resistance, initial 100 megohms. After life or environmental tests 50 megohms.
12、 Dielectric strength (sea level): Initial After life tests Coil to case 1,000 1,000 Aux contacts N/A N/A All other points 1,000 1,150 Dielectric strength (altitude): 50,000 ft Coil to case 500 V rms Aux contacts N/A All other points 700 V rms Max contact drop initial 150 volts. After life test 175 v
13、olts. Overload current 100 A dc; 115/200 V ac; 400 Hz 400 A. Rupture current 125 A dc; 115/200 V ac; 400 Hz 400 A. Duty rating Continuous. Qualification by similarity: See MIL-PRF-6106. Custodians: Preparing activity:Navy - AS DLA - CC Air Force - 11 DLA - CC (Project 5945-1221-20) NOTE: The activit
14、ies 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-,-,-
