1、MIL-S-55387 57 = 7777706 0075748 4 A-/- MI L-S-55389(EL) 30 March 1973 M I L I TARY SPEC I F I CAT I ON SUPPRESSOR, ELECTRICAL TRANS I ENT, MX-7778A/GRC This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 This specification covers the req
2、uirements for a shunt-type transient suppressor assembly designated as Suppressor, Electrical Transient MX-7778A/GRC. (See 6.1) 2. APPLICABLE DOCUMENTS 2.1 invitation for bids or request for proposal, form a part of this specification to the extent specified herein. The following documents, of the i
3、ssue in effect on date of SPECIFICATIONS FEDERAL T-T-87 1 NN-P-71 QQ-S-781 PPP-B-20 PPP-B-585 PPP-B-601 PP P - 8-62 1 PP P-6-6 36 P P P-F-3 20 P P P-T -76 PPP-T-97 Twi ne , Cotton, Wrapping Pallets, Material Handling, Wood, Double Strapping, Flat, Steel Bag, Cotton, Mailing Boxes, Wood, Wirebound Bo
4、xes, Wood, Cleated Plywood Boxes, Wood, Nailed and Lock-Corner Box, Fi berboard Fiberboard, Corrugated and Solid, Sheet Stock (Container Grade) and Cut Shapes Tape; Pressure Sensi tive Adhesive Paper, (For Ca-rton Seal ing) Tape; Pressure-Sensitive Adhesive, Filament Faced, Stringer Construction Re
5、i nf orced FSC 5915 Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-M I L I TARY MIL-P-116 MI L-T-152 MIL-V-173 MI L-P-11268 MI L-M-I 323 1 M 1 L-F-14072 STAN DA RD S FEDERAL FED-
6、STD-595 MILITARY MI L-STD-1 05 MI L-STD-129 MI L-STD-147 MIL-STD-252 MI L-STD-454 MI L-STD-81 O MI L-STD-1472 DRAW I NGS ELECTRONICS COMMAND Preservation, Methods of Treatment, Moisture and Fungus Resistant, of Communications, Electronic and Associated Electrical Equipment the Treatment of Communica
7、tions, Electronic and Associated Electrical Equ i pmen t Parts, Materials, and Processes Used in El ectron ic Communication Equ i pmen t Marking of Electronic items Finishes for Ground Signal Equipment Varnish, Moisture and Fungus Resistant, for Col ors Sampl ing Procedures and Tables for Inspec- Ma
8、rking for Shipment and Storage Pal letized and Containerized Unit Loads, tion by Attributes 40 Inch x 48 Inch Pallets, Skids, Runners or Pal let Type Base and Mechanical Defects Equ i pmen t Military Systems Wired Equipment, Classif cation of Visual Standard General Requirements for Electronic Envi
9、ronmental Test Methods Human Engineering Design Criteria for DL-SM-6-745200 Drawing List of Suppressor, Electrical Transient, MX-7778( )/GRC 2 Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license f
10、rom IHS-,-,-MIL-S-55387 57 7777906 0075750 2 MI L-s-55389 (EL) ,. (Copies of specif ications, standards, drawings, and pub1 ications required by suppliers in connection with specific procurement functions should be obtained from the procuring activity or as direced by the contracting officer. Both t
11、he title and number or symbol should be stipulated when requesting copies). 3. REQU r REMENTS 3.1 First Article. - When specified in the contract or purchase order, the contractor shall furnish first article units in accordance with 4.3. 3.2 Construction. - The equipment shall be constructed in acco
12、r- dance with Drawing DL-SM-9-745200.- 3.3 Bounce, Preconditioning. - The equipment shall meet the requirements herein, without subsequent processing, after subjection to the bounce preconditioning specified in 405a4. 3.4 Electrical Requirements. 3.4.1 Power. - The equipment chal 1 operate with tact
13、ical radios operating from a 28 vol t 1 O0 to 400 amp vehicular power supply. put vo degree (See 4 3 3.4.2 Voltage limitation. - With the output of the transient suppressor open circuited and the input voltage adjusted such that the zener diode draws 1 f 0.1 amperes at two (2) seconds of this voltag
14、e appl ication the maximum al lowable oytput vol tage chal 1 be within a range of from 33e0 to 36.0 volts referred to a zener case temperature of 75 degrees F. The unit shall be tested normally with a zener case temp- erature of 75 degrees F. When test requirements are at temperatures other than 75
15、degrees F, subtract 17.2 mv per degree F from the out- tage for a lower zener case temperature and add 17.2 mv per F to the output voltage for a higher zener case temperature. 7.1) 4.3 Circuit breaker operation, 3.4.3.1 Load, Electrical. = With the output load drawing. 70 f 0.5 amperes, the suppress
16、or circuit breaker shall trip within 5 seconds in a 77 f 5 degrees F. environment. The unit shall be tested normally in a 77 f 5 degree Fe environment. degree F. environment, the circui.t breaker shall trip within 30 seconds. When test requirements are at -I- 155 degree F. environment, the circuit b
17、reaker shall trip within 5 seconds. (See 4.7.2.1) When test requirements are at a -40 3 Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,- _- MIL-S-55389 59 999940b 0075951 Y i MI L
18、-su55389 (EL) 3.4.3.2 No Load, (Thermal). - With the output of the suppressor open-ci rcui ted and the input vol tage adjusted such that the zener diode draws a current of 20 0.5 amperes, the circuit breaker shall trip within 5 minutes. The unit shall be allowed to temperature stabilize for 5 minute
19、s before further testing. (See 4.7.2.2) 3.4.4 pulsing. - The suppressor shall operate, without the circuit breaker tripping, when pulsed five successive times at ten= second in terva 1 s , wi th measured without the s a 0.50 + O, - 05 ohms 200 amperes for 50 mi 1 having a total interna measured duri
20、ng the pu rise in output vol tage a 100 + O, -5V, 50 millisecond pulse (as ppressor connected) from a power suppl y hav i ng internal impedance and capable of supplying seconds. Series connected storage batteries and external resistance of 0.50 .t ,O0 ohms as se and ahead of the suppressor can be us
21、ed. The of the suppressor during each pulse measured e05 from 1 mi 1 lsecond after the start of the pul se to the nd of pul se shall not exceed 7.0 volts and the current droop shall not exceed 20.0 amperes. pulsing. fall below the voltage as measured in 3.4.2. 3.4.4.1 Pulse Circuit. - The pulsing ci
22、rcuit shall be The assembly shall meet the requirements of 3.4.2 after (See 4.7.3) The output vol tage during each pulse chal 1 not capable of delivering five successive 50 millisecond pulses at ten second intervals of 125 amperes minimum when loaded with a 0.30 + 0.00 ohms resistive load, The pulse
23、 rise time shall be not longer than one millisecond. The pulse droop shall be less than 10 amperes at 50 millfseconds. The total internal and external impedance of the volt- age source and pulser shall be 0.50 + 0.00 ohms. 0.05 (See 4.7.3.1) - 0.05 3.4.5 Voltage Drop and Battle Override. - The volta
24、ge drop measured at the positive and negative terminals of both mating connectors to the test item shall not exceed 0,40 volts with a 45 + O - 0.5 ampere load. The voltage drop shall be measured, first, with the ci rcui t breaker Ilonil and the battle override switch iioffll, and, second, with the c
25、ircuit breaker iioffli and the battle override switch I1onil. The input to the test item shall not exceed 30.0 volts during the test. (See 47.4) 3.4.6 Cable Assembly. - 4 Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking
26、 permitted without license from IHS-,-,-MIL-S-553.851 57 777770b 0075752 b 3.4.6.1 Continuity (ohmeter). - Verify continui ty between terminal A of connector (male) and terminals A and B of connector (female). Verify continuity between terminal B of connector (male) and terminals C and D of connecto
27、r (female). (See 4.7.5) 3.4.6.2 Vol tage Drop. - The total vol tage drop measured at the positive and negative terminals of both mating connectors to the cable assembly shall not exceed 1.0 volt with a 45 + O - 0.5 ampere load. (See 4.7.5) diode will draw acurrent f 45 + 5, -0 amperes when the suppr
28、essor ci rcui t brea.ker is cl osed. The circuit breaker shall then be closed and allowed to trip to protect the zener diode. minute waiting period, again with the output open-circuited; the input voltage shall be adjusted such thaf zener diode will draw a current of 55 + 5, -0 amperes when the supp
29、ressor circuit breaker is closed. The circuit breaker shall be closed again and allowed to trip. The suppressor shall then be al lowed to temperature stabi 1 ize for five (5) minutes after which the test specified in 3.4.2 shall be conducted to verify that the suppressor was not damaged. After at le
30、ast one (1) (See 4.1.6) the suppressor is subjected to the test sequence described in 4.7.7. of 3.4.2, 3.4.3.1, 3.4.3.2, 3.4.4 and 3.4.5 in those service conditions requiring unit operation. under the world-wide environmental conditions specified in 3.5.1 through 3.5.10 with a duty cycle of 8 hours
31、on and 4 hours off and with no more than normal maintenance and replacement of parts, Where the contractor is required to make a selection of parts, materials, processes, construction methods, etc., he shall be guided by this requirement and 6.7. Approval of the First Article Inspection samples (see
32、 3.1) shall be considered as compl iance with this requirement. (See 4.6) Continuous use for a period of 5 years, 3.5.1.1 High Temperature*. = The unit shall not be damaged when subjected to a storage temperature of + 160. electrical requirements specified in 3.5 when operating at an ambient tempera
33、ture of + 155?F, with th General. - In addition to the requirements of this specification, the requirements of MIL-P-11268, including the selection requirements, therein, shall apply. (See 3.2) 3.7 Finish, protective. - Equipment shall be given protective finish in accordance with specification MIL-
34、F-14072. This includes finish of hardware, such as handles, hinges, screws, etc., and necessary . touch-up after mounting. The final paint film on Type I surfaces shall be green color (o1 ive drab), semigloss enamel. (See 4.4)- 3.7.1 - Color. - The final paint film on Type I surfaces shall be- smoot
35、h semigloss, green, color conforming to Nr. X24087 of Federal Standard FED-STD-595. (See 4.4) 3.8 Marking. - Marking shall conform to Specif ication MIL-M-13231 Panel marking shall be Group I as described in that specification. (See 4.4) 3.8.1 Visibility. - Wherever practicable, parts shall be so mo
36、unted that their identification markings will be readily visible with minimum disassembly of the equipment. (See 4.4) 7 I Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3.11 Work
37、manship. - The equipment shall be manufactured and assembled in accordance with requi rement 9 of MI L-STD-454 and the appl cable portions of the fol lowing paragraphs: (a) In Specification MIL-P-11268: plastic parts. (2) Wiring and cab1 ing, including: Slack, Protection, clearance, splicing, connec
38、tions in general, grounding, shielding on wire and cable. Flux and cleaning agents for solder. (i) General requirements for plastic material and (3) (4) Soldering. (5) Cleaning. (6) Ri vet i ng . (7) General requirements for securing of parts. (8) Welding. (9) Tropical ization. Mechan i cal opera t
39、i on of control s (1 O) (i 1) Self-tapping sci;.ewsl (b) In this Specification: (i) Marking. (2) Finish. I 8 1- Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-55389 59 9999
40、906 007595b 3 M 3.12 Safety. - The equipment shall meet the pert requirements of requirement 1 of MIL-STD-454. 3.13 Human Factors. - The equipment shall meet t requirements of MIL-STD-1472. 4. QUALITY ASSURANCE PROVI S i ONS L-S-55389 (EL) nent safety e pertinent 4.1 Responsibility for Inspection. -
41、 Unless otherwise specified in the contract or purchase order, the contractor is responsible for the performance of all inspection requirements as specified herein. Except as otherwise specified in the contract or-purchase order, the contractor may use his own or any other facility suitable for the
42、performance of the inspection requirements specified herein unless disapproved by the government. perform-any of the inspections set forth in the specification where such inspections are deemed necessary to assure that supplies and services conform to prescribed requirements. The government reserves
43、 the right to 4a2 Classification of inspection. - inspection requirements specified herein are classified as follows: (a) for del ivery. (See 4.3) First Article Inspection Does not include preparation (b) Inspection covered by subsidiary documents. (See 4.4) (c) Qua 1 i ty conf ormanse i nspec t i o
44、n : (1) Qual ity conformance inspection of equipment before preparation for del ivery. (See 4.5) (2) Qual i ty conformance inspection of preparation for delivery. (See 4.1 1) 4.3 First Article Inspection. - This inspection shall consist of the inspection specified in the subsidiary documents coverin
45、g the items listed in 4.4, and the inspection specified in Group A, Group B. (See Tables II and II i.) on the samples specified and in the sequence shown in Table i. Unless otherwise specified in the contract or- purchase order, the first article inspection shall be performed by the contractor. Firs
46、t Article Inspection shall be performed 9 Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MI L-S+5389(EL) TABLE I FIRST ARTICLE INSPECTION I NSPECTI ONS REQT. TEST UNIT UNIT UNIT
47、PARA. PARA. 1 2 3 Inspections covered by subsidiary documents Bounce Preconditioning GROUP A. Inspection GROUP B Inspection Envi ronmen ta 1 Low Temperature High Temperature Or i enta t i on Relative Humidi ty Al ti tude Sal t Fog I mmers i on Sand-Dust Vi brat i on, Resonant Search Vi brat i on, Bo
48、unce Shock, Bal 1 istic Fungus Pulse Circuit 4.4 3.3 4.5.4 (See Table I i) (See Table I I I) 34.1 e2 3.5.1 e1 3.5.8 3.5.2 3.5.3 3.5.9 3.5.7 3.5.6 3.5.4. 1 3.5.4.2 395.5 3.5.10 3.4.4.1 4.6.1.2 4.6.1.1 4.6.8 4.6,2 4.6.3 4.6.9 4.6.7 4.6.6 4.6.4.1 4.6.4.2 4.6.5 4.6. i o 4.7.3.1 Inspections formed on a I
49、nspections formed on a Inspection formed on a to be per- l units to be per- l units o be per- l units Inspection to be per- formed on all units 1 2 3 4 1 2 1 2 3 4 5 6 Test Equipment 10 Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-55387 57 7777906 0075758 7 MI L-S-55389(EL) 4.4 Insp
