1、MIL-C-28742A( EC) MILITARY SPEC1 FICATION CONTROL ENCLOSURE CY -681 6/APX-72 FOR TRANSPONDER SET CONTROL C-6280( ) (P)/APX # This specification is approved for use by the Naval Electronic 1. SCOPE Systems Comnand. 1.1 This specification covers the design, fabrication, and tests of the CY-6816/APX Co
2、ntrol Enclosure. permit mounting of the C-6280/APX-72 Control box aboard Naval vessel s. 2. APPLICABLE DOCUiIENTS The purpose of this enclosure is to 2.1 The following documents of the issue in effect on date of invitation for bids or request for proposal, form a part of this specifi- cation to the
3、extent specified herein. SPEC I FI CAT IONS MILITARY MIL-S-901 - Shock Tests, H.I. (IiIGH IMPACT), Shipboard Machinery, Equipment and Systems, Require- ments for (Navy) MIL-Q-9858 - Qual i ty Prograin Requirements MIL-P-15024 - Plates, Identification - Information and Marking for Identification of E
4、lectrical , . Electronic and Wechanical Equipment MIL-E-76400 - Electronic Equipment, Naval Ships and Shore, General Specification (Navy) MIL-E- 1 7555 - El ectroni c and El ectri cal Equi pmen t , Accessori es and Repair Parts, Packaging and Packing of STAN DARDS ;?IL ITARY MIL-STD-108 - Definition
5、 of and Basic Requirements for Enclosure for Electric and Electronic Equipment FSC 5940 i . i I Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-Z742A 58 m 7797706 0354537 T m MIL-C-28742A( EC) MIL-STD-167 - Mechanical Vibration of Shipboard Equ
6、ipment MIL-STD-454 - Standard General Requirements for Electronic Equipment (Copies of specifications, standards y drawings and publications required by suppliers in connection with specific procurement functions should be obtained from the procuring activity or as directed by the contracting office
7、r. ) 2.2 Other publications. The following document forms a part of his specification to the extent specified herein. indicated, the issue in effect on date of invitation for bids or request for proposals shall apply. Unless otherwise NATIONAL BUREAU OF STANDARDS Handbook H28 - Screw-Thread Standard
8、s for Federal Servi ces. (Application for copies should be addressed to the Superintendent 3. REQUIREMENTS of Documents, U.S. Government Printing Office, Washington, O. C. 20402) 3.1 General. The equipment shall be in accordance with all provisions of MIL-E-16400, MIL-STD-108 and MIL-STD-453 , excep
9、t as herein- after specified. with Handbook H28. Screws and screw thread devices shall be in accordance 3.2 First article sample. Prior to beginning production, a sample shall be tested as specified in 4.3 (see 6.3) # 3.3 Simplification and improvements. The provisions of this specification shall no
10、t preclude simplification or improvement, except that any changes of this nature shall be approved by the comnand or agency concerned. 3.4 Environment. The assembled equipment shall be capable of satisfactory operation under the following conditions: (a) Temperature - Class 2 (b) Shock - Grade A, Cl
11、ass I, lightweight, type A of MIL-S-901 (c) Vibration - Type I of MIL-STO-167 (d) Humidity - Continuous or internittent, up to 95 percent (e) Enclosure - Dri pproof, per MIL-STD-1 O3 relative humidity 3.5 Primary power line voltage and frequency. Primary porrei- line voltage and frequency is not req
12、uired. 2- E Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-28742A 58 m 77979Ob 0354540 b m MIL-C-28742A( EC) 3.6 Synchros. Synchros are not required. 3.7 Controls and indicators. The front panel of the enclosure shall be provided with a Mode 4
13、 Caution Light and test switch for this light. i/ The front panel shall be labeled as shown in Figure 1 for this light and switch. The switch shall be a single pole, single throw type. In the NORMAL position the switch shall be open. In the TEST position, the switch shall be spring-loaded so as to p
14、ermit contact closure only when the switch is depressed. The switch and light are to be connected to the terminal board as shown in Figure 2. inches high by 8 inches deep. 3.8 Size. The unit shall be no larger than 8 inches wide, 10 3.9 Time meters. Time meters are not required. 3.10 Construction de
15、tails. The unit shall be designed to mount the C-6280 Transponder Set Control in a dripproof case in such a manner that the C-6280 shall be readily removable from the front panel of the case. The front panel shall also be removable from the case without removing the C-6280. 3.10.1 Mounting. Provisio
16、n shall be made for mounting the CY-6816 on its rear surface only. # 3.10.2 Terminal boards. Three twenty terminal boards shall be provided, mounted in the rear of the interior of the CY-6816 case. The terminal boards and terminals shall be labeled in the rear of the case adjacent to the terminal bo
17、ards as designated in Figure 2. 3.1 0.3 Connector cable harness. The contractor shall provide the mating connector (MS24266-R-228-55S) to the C-6280 together with a harness to the terminal boards of sufficient length so as to permit removal of the C-6280 from the CY-6816 case without disconnection o
18、f the C-6280 connector. The mating connector shall be connected to the terminal boards using the pin numbers and terminal numbers as shown in Figure 2. 3.10.4 Cable entrances. The design of the CY-6816 shall be such as to permit cable entrance on the top, bottom, or either side of tne case, by means
19、 of stuffing tubes or the like. hen requested by the contractor, the Navy shall provide information regarding these cable entrances so that the contractor may then provide information and direction for the provision of these cable entrances by the installing activity. design agency, who shall then a
20、pprove these directions. The type and manner of entrance shall be provided by the - 1/ To be operated on 28V d.c. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-28742A 58 M 77777Ob 0354543 8 W MIL -C-Z8742A( EC) W f z U U O I- i 00 v, w 2 9
21、3 7 4 o j.; - O N m Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MI L-C-28742A( EC) 3.10.5 Wiring directions. The contractor shall provide a photoetch metal plate showing all wiring hook-up including the terminal board jumpers as shown in Figure 2
22、. letters on white background in accordance with Type A of MIL-P-15024. This plate shall be mounted within the C-6816 case. The metal plate shall be photoetch black 3.11 Blown fuse indicators. Blown fuse indicators are not required. 3.12 Instruction plates. Instruction plates are not required. 3.13
23、Electromagnetic interference emission, susceptibility, and equipment and systems self-compatibility. emission, suscepti bi 1 i ty , and equipment and systems sel f-compati bi 1 i ty Electromagnetic interference is not required. 4. QUALITY ASSURKJCE PROVISIONS 4.1 Responsibility for inspection. Unles
24、s otherwise specified in the contract or purchase order, the supplier is responsible for the performance of all inspection requirements as specified herein. Except as otherwise specified in the contract or order, the supplier may use his own or any other facilities suitable for the performance of th
25、e inspection require- ments specified herein, unless disapproved by the Government. Government reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements. # 4.1.1 G
26、overnment verification-. All quality assurance operations performed by the contractor will be subject to Government veri fication at any time. Verification will consist of (a) surveillance of the operations to determine that practices, methods, and procedures of the written system description are be
27、ing properly applied, (b) Government product inspection ta measure quality of product to be offered for acceptance, and (c) Govern- ment product inspection of delivered product to assure compliance with all requirements of this specification. Failure of the contractor to promptly correct deficiencie
28、s discovered by him or of which he is notified shall be cause for suspension of acceptance until corrective action has been made or unti 1 conformance of product to prescri bed cri teri a has been demonstra ted. The 4.2 Classification of inspection. The inspection requirements specified herein are c
29、lassified as follows: (a) First article inspection (see 4.3) (b) Quality conformance inspection (see 4.4) (i) (2) Inspection of preparation for delivery (see 4.6) Production inspection (see 4.4.1 1 Visual and mechanical examination (see 4.5.1) (c) .r . ;: f Provided by IHSNot for ResaleNo reproducti
30、on or networking permitted without license from IHS-,-,-MIL-C-28742A( EC) 1 Exami na t i on or test Visual and mechanical exami nation Operating test 4.3 First article inspection. Unless otherwise specified (see 6.2.1) one unit shall be required for first article inspection. inspection shall consist
31、 of all examination and testing necessary to deter- mine compliance with the requirements of this specification. First article inspection shall include the tests specified in table I. First article i Test method paragraph 4.5.1 4.5.2 TABLE 1. First article inspection Examination or test Vi sua1 and
32、mechani cal examination Operating test Dimensions Shock and vibration Salt spray test Test method paragraph 4.5.1 4.5.2 4.5.3 4.5.5 4.5.6 Number of sample units to be inspected al 1 al 1 al 1 al 1 al 1 Number of failures O O O O O 4.4 Quality conformance inspection. 4.4.1 Production inspection. Prod
33、uction inspection shall be made on every enclosure offered for delivery. The inspection shall comprise such examination and testing as will prove the workmanship and reveal the omissions and tests which detect deviations from design and tests which detect hidden defects of material. Production inspe
34、ction shall consist of the tests approved in accordance with 4.1.3 and shall include the requirements of table II. 4.5 Inspection procedures. 4.5.1 Visual and mechanical examination. Each enclosure shall be examined for workmanship criteria listed in requirement 9 of MIL-STD-454, Particular attentio
35、n shall be given the following: (a) Workmanship, assembly and fit, and marking (b) Materials, parts and finish (cl Treatment for prevention of corrosion (d) Mounting provisions (e) Insulation protection 6 1 I Provided by IHSNot for ResaleNo reproduction or networking permitted without license from I
36、HS-,-,-MIL-C-287LI2A 58 m 7777906 015Lt5Y 3 HI L - C-28742A ( EC ) 4.5.2 Operating test. Tests for illuminating the Mode 4 caution light in the TEST position shall be made by operation of the front panel switch to verify compl iance with 3.7. 4.5.3 Dimensions. The external dimensions of the enclosur
37、e shall be measured to determine conformance to 3.8. Location of mounting holes for the C-6280 Transponder Set Control shall be measured or gaged to detemine conformance to 3.10. 4.5.4 Enclosure test. The enclosure shall be visually examined in accordance with MIL-STD-108 (dripproof) to determine th
38、e abi li ty of the enclosure to exclude falling drops of liquid or solid particles and to veri fy conformance to 3.4. (e). 4.5.5 Shock and vibration. The enclosure, with the C-6280 Transponder Set Control installed, shall be shock and vibration tested in accordance with MIL-E-16400 to determine cmpl
39、iance with 3.4 (b) and 3.4 (c). accordance with MIL-E-16400. At the conclusion of the test the enclosure shall be carefully examined in detail to detect evidence of physical degradation such as deterioration or corrosion of any enclosure surface or component which could in any manner prevent the enc
40、losure from meeting operational requi rernents during servi ce 1 i fe. packs and the inspection of the preservation and packaging, packing and marking for shipment and storage shall be in accordance with the require- ments of section 5. 4.5.6 Salt spray test. The salt spray test shall be made in 4 4
41、.6 Inspection of preparation for delivery. Sample packages and 5. PREPARATION FOR DELIVERY (The preparation for delivery requirements specified herein apply only for direct Government procurements. eqi?nients of referenced documents listed in section 2 do not apply unless specifically stated in the
42、contract or order. requirements for products procured by contractors shail be specfed in the individual order). Preparation for delivery Preparation for delivery 5.1 Preservaton and packaging, packing, and marking. Unless otherwise specified, preparation for delivery shall be in accordance with MIL-
43、E-17555 (see 6.2.i): 6. NOTES # 6.1 Intended use. The equipment covered by this specification is intended for use in the mounting of the C-6280/APX-72 Control box aboard naval vessel s. 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NIL-C-287gZA 5
44、8 9799406 OL545LI.5 5 MI L-C-Z8742A( EC ) 6.2 Ordering data. Procurement documents should specify the fol 1 owing : 6.2.1 Procurement requirements. (a) Title, number, and date of this specification. (b) Nunber of first article samples to be submitted if other (c) Marking, levels of preservation and
45、packaging and packing than specified in 4.3. required (see 5.1) # 6.3 First article. Invitations for bids should provide that the Government reserves the right to waive the requirement for first article samples as to those bidders offering a product which has been previously procured or tested by th
46、e Government, and that bidders offering such products, who wish to rely on such production or test, must furnish evidence with the bid that prior Government approval is presently appropriate for the pending procurement. l/ CHANGES FROM PREVIOUS ISSUE. THE OUTSIDE MARGINS OF THIS DOCUMENT HAVE BEEN M
47、ARKED InUI TO INDICATE WERE CHANGES DELETIONS. ADDITIONS, AND SO FORTH) FRON THE PREVIOUS ISSUE HAVE BEEN MADE. THIS HAS BEEN DONE AS A CONVENIENCE ONLY Ar4D THE GOVERNMENT ASSU:dES NO LIABILITY WHATSOEVER FOR ANY INACCURACIES 1:; THESE NOTATIONS. BIDDERS AND CONTRACTORS ARE CAIITIOMED TO EVAULATE T
48、iiE REQUIREMENTS OF THIS DOCUMENT BASED ON THE ENTIRE CONTENT AS WRITTEN IRRESPECTIVE OF THE MARGINAL NOTATIONS AND RELATIONSHIP TO THE LAST PREVIOUS ISSUE. I Preparing activity: NAVY - EC (Project 5840-Nl62) 3 I I Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-W I Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
