1、a 27 January 1967 (See 6.5) # MILITARY SPECIFICATION CABLE ASSEMBLIES, POWER, ELECTRICAL (WITH GROUNDING, FOR 440-VOLT PORTABLE EQUIPMENT) Th-j specificat on is approved for use by all Departments and Agencies of Department of Defense. he 1. SCOPE 1.1 This specification covers electrical power cable
2、 assemblies having a Navy-type grounded plug connector connected to one end, for 440-volt, 3-phase alternating current (a.c.) circuits that require a current of 20 amperes or less continuously. It also covers the requirements for connecting the other end of the cable assembly to a piece of portable
3、electric equipment such as a drill. Grounding is accomplished by a green conductor in the cable assembly. 2. APPLICABLE DOCUMENTS 2.1 The following documents of theissue in effect on date of invitation for bids or request for proposal, form a part of this specification to the extent specified herein
4、. SPECIFICATIONS MILITARY MIL-C-915 - Cable, Electrical, Special Purpose, General Specification For. MIL-R-2726/3 - Receptacle, Plug, Electrical, 4-Pin, Grounded, 40 Ampere, MIL-R-2726/24 - Receptacle, Plug, Electrical, Connector, 25-Ampere, 500-Volt, MIL-E-17555 - Electronic and Electrical Equipmen
5、t, Accessories and Repair MIL-S-19622/19 - Packing Assemblies for Nylon Stuffing Tube, Size 4 and 4T. MIL-1-45208 - Inspection System Requirements. 450-Volt Alternating Current (Symbol No. 717.1). 3-Phase Grounded (Symbol No. 707.1). Parts: Packaging and Packing of. STANDARDS MILITARY MIL-STD-105 -
6、Sampling Procedures and Tables for Inspection by Attributes. (Copies of specifications, standards, 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 officer.) 1 3, REQUIR
7、EMENTS 3.1 General re uirements. Unless otherwise specified in the contract or order, the cable assembly sha -t + 1 foot in length measured from the plug connector to the point of entrrance into the porta6e equipment housing. shall be securely attached to the portable electric equipment and electric
8、ally connected within the equipment casing to the metallic or conducting structure such that all exposed metallic or conducting portions will make adequate electrical contact with the grounding conductor. Where the portable equipment contains or includes a transformer, the ground conductor shall als
9、o make adequate contact with any exposed metallic or conducting structure of the transformer. The other end of the grounding conductor shall.be connected to the grounding contact in the plug connector. rubber tubing where it is connected to the portable equipment in order to .protect the cable from
10、sharp bends, and shall be securely clamped or anchored tothe portable equipment structure by insulating type clamps in a manner to prevent mechanical strain on the conductor connections and to avoid interference with the operation of the portable equipment (see 4.4). One end of the ground conductor
11、The cable shall be reinforced with an insulating FSC 6150 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-flIL-C-LS787F bl m 77777Ob 00bb37 7 m MIL-C-15987F 3.2 Cable. The cable shall conform to type FHOF-9 of MIL-C-915. # 3.3 Plu connector. The plug
12、 connector shall conform to symbol 707.1 of MIL-R-2726/24 symbol 717df MIL-R-2f26/3 as required (see 6.1 and 6.2). in a locatdr%. After acceptance of the first lot, one file copy of all test data to t e Naval Ship Engineering Center and to any other activities specified The cover and title page The
13、data shall be bound into a 9 by 11-1/2 inch binder, A table of contents shall be No special test format will be required. # 4.2 Sampling for guality conformance inspection. # 4.2.1 Ins ection lot All cable assemblies of identical design and composition manufacturededlly the same conditions and at es
14、sentially the same time and offered for delivery at one time shall be considered a lot for purposes of inspection. selected fromonnxdance with MIL-STD-105 , inspection level S-2 for the examina- tion opecified in 4.3.1. The acceptable quality level (A.Q.L.) shall be 1.5 percent. each lot in dkdce wi
15、thL-STD-105 inspection level S-2 for the tests specified in 4.4. If any one sample fails in the tests the entire lot represented by the sample shall be subject for rejection. 4.2.2 Sam lin for visual examination. A random sample of cable assemblies shall be # # 4.2.3 Cam lin for tests. A random samp
16、le of cable assemblies shall be selected from 4.3 Qualitx conformane inspection. 4.3.1 Visual examination. Each of the sample cable assemblies selected in accordance with 4.2.2 sme examined to verify conformance with all of the requirements of this specification which do not involve tests. If any ca
17、ble assembly contains one or more defects, the equipment shall not: be offered for delivery, and if the number of nonconforming cables in any sample exceeds the acceptance number for that sample, this shall be cause for rejection of the lot represented by that sample. 2 Provided by IHSNot for Resale
18、No reproduction or networking permitted without license from IHS-,-,-MIL-C-15787F bL Ob 0086638 O MIL-C-15987F 4.4 Test procedures. 4.4.1 The grounding circuit of the equipment shall be tested by placing a current of not more than 10 or less than 8 amperes through the grounding circuits for a period
19、 of not less than 1 minute. This shall be done with the portable electric equipment insulated from the ground, except for grounding, which may result from connection of the ground lead itself. The ground terminal or simulated grounding contact of the receptacle connector mated with the plug shall be
20、 connected to one end of the circuit and the exposed metal portion of the portable electric equipment shall be connected by means of a test clip to the other end of the circuit. limiting the current to the specified value. The means of limiting the current may be a resistance inserted in the circuit
21、 or a commercially available ctepdown transformer supplying power to the circuit. between 8 and 10 amperes shall be measured by means of a voltmeter having a full scale deflection of not more than 15 volts connected between a metal portion of the portable electric equipment in electrical contact wit
22、h the grounding circuit, and the ground terminal or simulated grounding contact of the receptacle connector mated with the plug. This poten- tial shall not exceed 3 volts, and no arcing or burning in the grounding circuit shall be evident. This circuit shall be placed in series with an ameter and so
23、me means of The potential drop through the ground connection when carrying 4.4.2 The insulation resistance between any two power conductors and between all pjwer conductors and the ground conductor shall be measured by a mgohmmeter. The resistance shall be not less than 200 megohms except that, if a
24、 lesser value is specified for the electric device to which attached, the lesser value shall be used as the minimum megohm value for acceptance of the cable assembly. 4.5 Ins ection 02 re aration for deliver . Cable assemblies, plug connectors and packages skspecbm3edance with section 5 of this docu
25、ment. 5. PREPARATION FOR DELIVERY i - . # 5.1 Preservation, packagin , ackin and mark?%. Cable assemblies and plug connectors shall be preserved and packaged and marked in accordance with MIL-E-17555. A 05 C, packe level A, B or C as specified (see 6.2)r 6. NOTES 6.1 Intended use. The cable assembli
26、es covered by this specification are intended for use with shipboard m-volt portable electric equipment. with the following receptacles which are specified in ship construction: # 6.1.1 Plug connector, symbol 717.1 of MIL-R-2726/3 is used in cable assembly fot use (a) Receptacle and switch connector
27、, symbol 915.1 of MIL-R-2726/19. (b) Receptacle connector, symbol 1147.1 and 1147.3 of MIL-R-2726/16. (c) Triple outlet, symbol 765.6 of MIL-R-2726/49. # 6.1.2 Plug connector, symbol 707.1 of MIL-R-2726/24 is required on cable assemblyfor ships equipped with the following receptacles: 6.2 # 6.3 docu
28、ment (a) Receptacle connector, Drawing 9-S-4864-L. (b) Receptacle connector, Drawing 9000-S6202-74214 Ordering data. (a) Title, number and date of this specification. (b) Symbol number of plug to suit receptacles on ship (see 3.3). (c) Quality assurance requirements (see 4.1.11. (d) Name of activity
29、 to receive copy of test report (see 4.1.3). (e) Levels of preservation, packaging, packing and marking required (see Sel). Procurement documents should specify the following: Mana ement control s stem document. s&ncluded oniorm 1660 : The following management control system (a) MIL-1-45208 (see 4.1
30、.1). 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-li5987F bli 9990b 008bb39 2 MIL-C-15987F I 6.4 Stock numbers. The applicable stock numbers are as followsr Type FHOF-9 cable 956145-260-8807. Symbol 707.1 plug connector, stocked in two par
31、ts as follows: Plug connector, symbol 717.1 - stock number H5935-852-4200, Packing assembly, M/19622/19-0005 - Stock number 5975-202-2595. Shell - Stock number 985935-243-1285. Insert - Stock number 385935-242-0026. 6.5 THE MARGINS OF THIS SPECIFICATION HAVE BEEN MARKED “I“ TO INDICATE WHERE CHANGES
32、 (ADDITTOSS, MODIFICATIONS, CORRECTIONS, DELETIONS) FROM THE PREVIOUS ISSUE WERE MADE. THIS WAS DONE AS A CONVENIENCE ONLY AND THE GOVERNMENT ASSUMES NO LIABILITY WHATSOEVER FOR ANY INACCURACIES IN TIJESE NOTATIONS. BIDDERS AND CONTRACTORS ARE CAUTIONED TO EVALUATE THE REQUIREMENTS OF THIS DOCUMENT
33、BASED ON THE ENTIRE CONTENT IRRESPECTIVE OF THE MARGINAL NOTATIONS AND RELiiTIONSHIP T THE LAST PREVIOUS ISSUE. Custodians: Amy = EL Navy - CH Review activities: Amy - EL Navy - SH User activities: Army - ME Navy OS Preparing activity: Navy - SH (Project 6150-0130) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
