1、3 August 1981 MILITARY STANDARD CABLE ARRANGEMENT FOR MINIMUM S TRAY MAGNETIC FIELD (METRIC) ! “ - c THIS DOCUMENT CONTAINS $1 PAGES. -1 FSC 6145 Licensed by Information Handling ServicesDEPARTMENT OF THE NAVY NAVAL SEA SYSTEMS COMMAND WASHINGTON, DC 20362 Cable Arrangement for Minimum Stray Magneti
2、c Field DOD-STD-2133(SH) 1. This Military Standard is approved for use by the Naval Sea Systems Command, Department of the Navy, and is available for use by all Departments and Agencies of the Department of Defense, 2. Bments (recommendations, additions, deletions) and any pertinent data which may b
3、e of use in improving this document should be addressed to: Commander, Naval Sea Systems Command, SEA 3112, Department of the Navy, Washington, DC 20362, by using the self-addressed Standard- ization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. I-
4、ii Licensed by Information Handling ServicesMILITARY STANDARD CABLE ARRANGEMENT FOR MINIMUM STRAY MAGNETIC FIELD (METRIC) TO ALL HOLDERS OF DOD-STD-2133(SH): 1. THE FOLLOWING PAGES OF DOD-STD-2133(SH) HAVE BEEN REVISED AND SUPERSEDE THE PAGES LISTED : NEW PAGE DATE SUPERSEDED PAGE DATE 1 22 August 1
5、988 1 3 August 1981 2 3 August 1981 REPRINTED WITHOUT CHANGE 3 3 August 1981 REPRINTED WITHOUT CHANGE 4 22 August 1988 4 3 August 1981 2. RETAIN THIS NOTICE AND INSERT BEFORE TABLE OF CONTENTS. 3. Holders of DOD-STD-2133(SH) will verify that page changes and additions indicated above have been enter
6、ed. This notice page will be retained as a check sheet. This issuance, together with appendix pages, is a separate publication. Each notice is to be retained by stocking points until the Military standard is completely revised or cancelled. Preparing activity: Navy - SH (Project 6145-N333) Licensed
7、by Information Handling ServicesDOD-STD-2133(SH) 3 August 1981 CONTENTS Page Paragraph 1. SCOPEem.o. 1 1 1.1 Scope ; 1.2 Application . . . .u . . . . . . 1 2. REFERENCED DOCUMENTS . . . . . . . . 1 2.1 Issues of documents . . . . . . . . . . . 1 3. 3.1 3.2 3.3 3.4 3.5 3.6 3.7 389 3.11 3.8 3.10 4. 4.
8、1 4.1.1 4.1.2 4.1.3 482 4.2.1 4.2.2 5. 5.1 5.1.1 5.1.2 5.1.3 5.1.4 5.2 5.2.1 5.2.1.1 5.2.2 5.2.3 5.2.4 5.3 5.3.1 5.3.2 DEFINITIONS 4 8 o Crossways cable run terminal approach . . Current loop . . . . . . . . . . . . . . Edgewise terminals . . . . . . . . . . . . Endways cable run terminal approach .
9、 . . Flat terminals . . . . . . . . . . . . Magnetic minesweep cable . . . . . . . Magnetic minesweep terminal box . . . . . Sideways cable run terminal approach . . Stray magnetic field . . . . . . . . . . Sweep tail cable . . . . . . . . . . . Flux density . . . . . e i . b S 1 1 1 1 1 1 2 2 2 2 2
10、 2 GENERAL REQUIREMENTS . 8 2 Direct current (d.-c.) power oables . . . . 2 Four conductor, quadded cables . . . .2 Utilization of double-conductor cables . . 2 Utilization of single-conductor cables . . 2 Alternating current (a.c.) power cables . 3 Phase conductors in a common cable . . . . 3 Phase
11、 conductors in separate cables . . 3 DETAILED REQUIREMENTS . . . . . . . . . . . Cable arrangements . . . . . . . . . . . . Arrangement of cables for opposing current Equal current division among cables connected in parallel . . . . . . . . . Spiraling the cable run to minimize the effects of unequa
12、l current division . . . Cable spacing . . . . . . . . . . . . . . Magnetic minesweep cable arrangements . Four-cable arrangements . . . . . . . . Bulkhead penetrations . . . . . . . . . . Eight-cablearrangements . . . . . . . . Cable arrangements with other than four or eight cables . . . . . . . .
13、 . . . Sweep tail cable . . . . . . . . . . . . . Cable terminal connections . . . . . . . . Compatibility of cable runa and terminal Arrangement of termnala and approaoh by loops . .I.*. .88.88.8.8. oable.run . ,. . . . . . . . . . . . . . iii 3 3 c 3 3 4 4 5 5 5 I “7” , , .” -. . .”. -. _”“.-. - .
14、 . . - . . . ., .”. .- o- Licensed by Information Handling ServicesParagraph 5 3.3 5.3.3.1 5.3.3.2 5.3.3.3 5.3.3.4 5.3.3.5 5.3.3.6 5.3.3.7 5.4 5.4.1 5.4.2 5.5 Figure 1. 2. 3. 4. 5. 6. 7. 8. 9. IO. 11. 12; 3 August 1981 CONTENTS (Continued) Page Three-terminal arrangements Four-cable connection with
15、endways approach to edgewise terminals Four-cable connection with crossways approach to edgewise terminals Four-cable connection with endways approach to flat terminals Four-cable connection with crossways approach to flat terminals Four-cable connection with sideways approach to edgewise .or flat t
16、erminals . . Eight-cable connection General connection method for six cables . Minesweep cable terminal connections . Terminal and disconnect switch connections .for minesweep generator cable runs with four, single-conductor cables Terminal and disconnect switch connections for minesweep generator c
17、able runs with eight, single-conductor cables inspection Minesweep cable run and terminal FIGURES Edgewise and flat three-terminal arrange- ments. Arrangement of single coductor d.c. cables for opposing current loops Effects of unequal current division in single-conductor cables connected in paralle
18、l * . . Typical spiraling arrangements for d.c. circuit cable array Typical effects of excessive cable separa- tion in a quad arrangement Magnetic minesweep eight cable arrangement . Connection of an endways cable run with four cables to edgewise terminals- . . . . . Connection of. a crossways cable
19、 run with four cables to edgewise terminals . Connection of an endways cable run with four cables to flat terminals . Connection to a crossways cable run with four cables to flat terminals . Connection to an endways cable run with eight cables to flat terminals Connection to a crossways cable run wi
20、th eight cables to flat terminals iv 5 5 5 5 5 5 5 6 6 6 6 6 8 9 10 11 12 13 14 15 16 17 18 19 Licensed by Information Handling ServicesCONTENTS (Continued) Page ” Figure 13. Connection to a sideways cable run with eight cables to flat terminals . . . . . . 20 14. Connection to an endways and crossw
21、ays cable run with six cables . . . . . . . . . . . . 21 15. Four-cable, four-terminal blade connection , 22 16. Four-cable, three-terminal blade connection 23 18. Eight-cable, six-terminal blade connections. 25 17. Four-cable, two-terminal lugs in parallel . 24 v/vi q O Licensed by Information Hand
22、ling ServicesDOD-STD-2133(SH) . NOTICE 1 22 August 1988 1. SCOPE 1.1 ScoDe. This standard covers the arrangement of power cables in a manner that will reduce to a minimum the stray magnetic field produced by the current in these cables. 1.2 Amlication. Requirements specified herein are applicable to
23、 shipboard c installation of direct current (d.c.) and alternating current (a.c) power cables . aboard minesweepers and other special installations where stray magnetic fields must be reduced to a minimum. 2. REFERENCED DOCUMENTS 2.1 Issues of documents. The following other Governm spiraling will ai
24、d in minimizing the separation between adjacent conductors of the cable. Figure 4 illustrates a typical spiraling arrangement for a d.c. circuit cable array composed of four cables in a quad array and eight cables in a circular array. 5.1.4 Cable macinq. Multiple, single-conductor d.c. cables in a c
25、able run shall be spaced equally to each other along their entire run so that the opposing current loops created by the cable arrangements will result in a net magnetic moment as close to zero as possible, Cables in a quad arrangement shall be pressed tightly together all along the cable run with th
26、eir centers at the comers of a square. Figure 5 illustrates the REPRINTED WITHOUT CHANGE Licensed by Information Handling Services.“ DOD-STD-2133(SH) NOTICE 1 22 August 1988 typical efects of excessive cable separation in a quad arrangement. Equal spacing of the cables in a circular array arranged a
27、bout a central core shall be accomplished by utilizing cables of the same diameter, selecting a central core of the proper diameter, and by tightly clamping the cables against the core. 5.2 wetic tninesweer, cable arranvements. 5.2.1 Four-cable arrwements. Magnetic minesweeping cable arrangements co
28、nsisting of two parallel, single-conductor cables in both the positive and negative branches of the cable run, for a total of four cables, shall be arranged to form a quad array. The cable centers of the quad shall form a square with alternate positive and negative polarity (see Sigure 2A). The arra
29、ngement and installation of the cables shall be in accordance with 5.1 with the additional requirement that the spiraling of the quad shall be a right hand lay of 360 degrees every 1.0 to 3.0 meters (see figure 4A). With the exception of terminal connections and hull penetrations, the separation, if
30、 any, of the outer sheath of adjacent conductors of the quad should be less than 12.5 mm. 5.2.1.1 Bulkhead Denetratiom. Where space permits, -a single community type stuffing tube shall be used for the cables of a quad when penetrating a watertight bulkhead. Details of the arrangement shall be in ac
31、cordance with the standard method for community stuffing tubes penetrating watertight wood bulkheads on minesweepers as shown on NAVSJIA S9390-AW-EDG-OlO/EPISM. Where the cables o the quad penetrate a bulkhead through individual stuffing tubes, the separation of the outer sheath of adjacent cables s
32、hall. not exceed 75 mm at the bulkhead and 12.5 mm at a distance of 450 mm from the bulkhead. The cables shall be tightly bound together just prior to entering and after leaving the stuffing tubes, 5.2.2 Bivht-cable arranvementg. Magnetic minesweeping cable arrangements consiseing of four parallel,
33、single-conductor cables in both the positive and negative branches of the cable run, for a total of eight cables, shall be arranged around a central core as shown on figure 6. The arrangement, installa- tion and spiraling of the cables shall be in accordance with 5.1. 5.2.3 Cable arrangements with o
34、ther than four or eieht cableg. When the magnetic minesweep cable installatipn design is such that an even multiple of parallel, single-conductor cables other than two (four total) or four (eight total) is required in both the positive and negative branches of the cable run, the cables shall be arra
35、nged about a central core with the cable alternating positive and negative. For convenient connection to three-terminal equipment, the preferred total number of cables is an integral multiple of four. 5.2.4 Sweet, tail cable, In order to prevent the formation of excessive current loops, when connect
36、ing the sweep tail cable to the magnetic minesweep terminal box, the sweep tail conductors shall have a separation of not more than 12.5 mm at a distance of 300 mm from the terminal connection. After the cable is connected to the terminal box, the-conductors shall be tightly bound in order to preven
37、t further separation between conductors of the cable during the sweep operation. . . Supersedes page 4 of 3 August 1981. Licensed by Information Handling Services5.3 Cable. terminal connections. 5.3.1 Compatibilit this shall also be true of the negative cables. The general scheme shown shall also be
38、 applicable to edgewise terrhinals. 5.3.3.7 General connection method for six cables. An endways or crossways connection to three terminals for a cable run consisting of six. single-conductor cables about a central core may be made as follows (see figure 14): (a) Draw in every other cable and connec
39、t it to a single conductor which is on an extension of the cable axis. This single conductor shall than be connected to the central terminal of the equipment. which is concentric with the cable axis. the two outside terminals of the equipment. (b) Connect theremaining three cables to a conducting ri
40、ng (c) Connect two diametrically opposite points on this ring to This arrangement will create currentloops of equal area and opposite polarity, causing the stray magnetic field to be small. A simple modification of the above procedure can accommodate a sideways cable run. 5.4 Minesweep cable termina
41、l connections. 5.4.1 Tepminal and disconnect switch connections for minesweeE Jenerator cable runs with four single-conduct.or cables. Terminal and disconnect switch connections for minesweep generator cable runs with four single-conductor cables shall be arranged in accordance with figures 15, 16 o
42、r 17. The cables shall be tightly bound together as close as possible to the terminal lugs and the terminal box connection. The separation of the outer sheath of adjacent cables shall not exceed 12.5 mm at a distance of 450mm from the bulkhead. 5.4.2 Terminal and disconnect switch connections for mi
43、nesweep Jenerator cable runs with eight, single-conductor cables. Terminal and disconnect switch connectins for minesw.eep generator cable runs with eight, single-conductor cables shall be arranged in accordance with figure 18. 5.5 Minesweep cable run and terminal inspection. A visual inspection of
44、cable runs and connecting .terminal installation arrangements shall be made to ensur that the cable is arranged in accordance with the requirements of this standard. The inspection shall start at the minesweep generator and shall include all minesweep cables to the sweep tail terminal box connection
45、. Particular attention should be given to the terminal connections, bulkhead piercing and bends in the cable. A check shall be mad at each terminal connection to ensure that the polarity of the oable is arranged so that all adjacent conductors have opposite polarities, In particular, the following i
46、nspections shall be made: (a) Inspect minesweep generator(s1 terminal connections for: (1) Proper arrangement of lugs. (2) Cable tightly bound near the terminals, (3) Cable conductors arranged in accordance with this standard 6 . o Licensed by Information Handling ServicesDOD-STD-2133(SH) 3 August 1
47、981 (b) Inspect the cable from generator(s1 to disconnect switch for: -(I) Excessive separation in the cable conductors. (2) Adequate twisting of cable. (1) Proper arrangement of lugs, (2) Cable tightly bound near terminals. (3) Cable conductors arranged in accordance with this (c) Inspect disconnec
48、t switch terminal connections for: standard. (d) Inspect the cable penetration of watertight bulkhead for: (1) Minimum spacing of stuffing tubes, (2) Cable tightly bound just prior to enterihg, and after leaving the stuffing tubes. (e) Inspect cable from disconnect switch to terminal box for: (1) Ex
49、cessive separation in the cable conductors. (2) Adequate twisting of cable. (1) Excessive se-paration of the sweep tail cable. (2) Adequate twisting of cable. (3) Cable tightly bound together. (4) Proper positive-negative connection of conductors (f) Inspect sweep tail cable to terminal box for: of sweep tail cable to terminal box connectors. Preparing activity: Navy - SH (Project 6145-N296) 7 L - o d Licensed by Information Handling ServicesI Crossways cable approach SH 11941 A. EDGEWISE ARRANGEMENT Crossways cabl e approach Sideways cable approach Termi na1 s -
