ASTM F1837M-1997(2007) Standard Specification for Heat-Shrink Cable Entry Seals (Metric)《热缩电缆引入密封的标准规范(公制)》.pdf

1、Designation: F 1837M 97 (Reapproved 2007)An American National StandardStandard Specification forHeat-Shrink Cable Entry Seals (Metric)1This standard is issued under the fixed designation F 1837M; the number immediately following the designation indicates the year oforiginal adoption or, in the case

2、of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers the general requirements forheat-shrink cable entry seals. Cable e

3、ntry seals are intended formaking electrical cable penetrations into connection boxes,bulkheads, or other enclosures. These devices are suitable forboth thin wall enclosures up to 5 mm (316 in.) thick andthick-wall enclosures of 5 mm to 19 mm (316 in. to34 in.) thick.1.2 Cable entry seals shall have

4、 factory-applied adhesivethat provides the seal to wire and cable jackets.1.3 The values stated in SI units are to be regarded as thestandard. The values given in parentheses are for informationonly.1.4 This standard does not purport to address all of thesafety concerns, if any, associated with its

5、use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to its use.2. Referenced Documents2.1 ASTM Standards:2D 149 Test Method for Dielectric Breakdown Voltage andDielectric Stre

6、ngth of Solid Electrical Insulating Materialsat Commercial Power FrequenciesD 257 Test Methods for DC Resistance or Conductance ofInsulating MaterialsD 412 Test Methods for Vulcanized Rubber and Thermo-plastic ElastomersTensionD 570 Test Method for Water Absorption of PlasticsD 635 Test Method for R

7、ate of Burning and/or Extent andTime of Burning of Plastics in a Horizontal PositionD 747 Test Method for Apparent Bending Modulus ofPlastics by Means of a Cantilever BeamD 792 Test Methods for Density and Specific Gravity (Rela-tive Density) of Plastics by DisplacementD 2240 Test Method for Rubber

8、PropertyDurometerHardnessD 2671 Test Methods for Heat-Shrinkable Tubing for Elec-trical UseD 2863 Test Method for Measuring the Minimum OxygenConcentration to Support Candle-Like Combustion ofPlastics (Oxygen Index)D 3149 Specification for Crosslinked Polyolefin Heat-Shrinkable Tubing for Electrical

9、 InsulationD 4572 Test Method for Rubber ChemicalsWet SieveAnalysis of SulfurD 4732 Specification for Cool-Application Filling Com-pounds for Telecommunications Wire and Cable2.2 ASME StandardASME B1.1 Unified Inch Screw Threads (UN and UNRThread Form)32.3 NEMA Standards:4NEMA 250 Enclosures for Ele

10、ctrical Equipment (1000Volts Max)2.4 IEC Standard:IEC 68-2-6 Environmental TestingPart 2: TestsTest FC:Vibration (Sinusoidal) Sixth Edition53. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 heat-shrink cable entry seal, nheat-shrinkable tubemaking a watertight, fume-tight seal w

11、here cable connectionsboxes, bulkheads, or other enclosures.3.1.2 polyolefin, na polymer made by the polymerizationof hydrocarbon olefins or copolymerization olefins.4. Classification4.1 Heat-shrink cable entry seals shall be of the followingtypes:4.1.1 Type 1, standard cable entry seals for thin-wa

12、ll enclo-sures shall consist of the three part assembly; a rigid plasticnut, O-ring, and heat-shrinkable molded area.4.1.1.1 Type I1, molded area configured with one openingfor a single wire or cable entry.1This specification is under the jurisdiction of ASTM Committee F25 on Shipsand Marine Technol

13、ogy and is the direct responsibility of Subcommittee F25.10 onElectrical.Current edition approved May 1, 2007. Published June 2007. Originallyapproved in 1997. Last previous edition approved in 2002 as F 1837M - 97(2002).2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact

14、 ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Available from American Society of Mechanical Engineers (ASME), ASMEInternational Headquarters, Three Park Ave., New York, NY 10016-5990, h

15、ttp:/www.asme.org.4Available from National Electrical Manufacturers Association (NEMA), 1300N. 17th St., Suite 1752, Rosslyn, VA 22209, http:/www.nema.org.5Available from International Electrotechnical Commission (IEC), 3, rue deVarembe, Case Postale 131, CH-1211, Geneva 20, Switzerland.1Copyright A

16、STM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.4.1.1.2 Type I2, molded area configured with two equalsize openings to seal two wires or cables.4.1.1.3 Type I3, molded area configured with three equalsize openings to seal three wires or cables.4

17、.1.1.4 Type I4, molded area configured with four equalsize openings to seal four wires or cables.4.1.1.5 Type I5, molded area configured with six equal sizeopenings to seal six wires or cables.4.1.1.6 Type I6, molded area configured with eight equalsize openings to seal eight wires or cables.4.1.2 T

18、ype II, cable entry seal for threaded hole applicationsshall consist of a one-part assembly that combines a taperednational pipe thread (NPT) in rigid plastic with heat-shrinkablemolded area.4.1.2.1 Type II1, molded area configured with one openingfor a single wire or cable entry.4.1.2.2 Type II2, m

19、olded area configured with two equalsize openings to seal two wires or cables.4.1.2.3 Type II3, molded area configured with three equalsize openings to seal three wires or cables.4.1.2.4 Type II4, molded area configured with four equalsize openings to seal four wires or cables.4.1.3 Type III, right

20、angle cable entry seal for thin-wallenclosure shall consist of a three part assembly; a rigid plasticnut, O-ring, and heat-shrinkable molded area.4.1.4 Type IV, right angle cable entry seal for threaded holeapplication shall consist of a one-part assembly that combinesa tapered national pipe thread

21、(NPT) in rigid plastic with aheat-shrinkable molded area.5. Ordering Information5.1 Orders for cable entry seals under this specification shallinclude the following:5.1.1 Part Number (see Figs. 1-6).5.1.2 Quantity (per each part).6. Materials and Manufacture6.1 The rigid plastic parts shall be made

22、from polyamide(nylon), (or polyester material, or both.) The material shall beGroup 1, Class 8, Grade 1 as specified in Specification D 4066.6.1.1 Threads shall be unified form UN 2A or 2B or taperpipe thread (NPT) as specified in ASME B1. 1.6.2 The heat-shrinkable tubing shall be of a crosslinkedpo

23、lyolefin in accordance with Type III of Specification D 3149.6.3 The adhesive shall be general purpose high-bond-strength adhesive sealant that provides stain relief and envi-ronmental sealing of heat-shrink tubing to cable jackets.6.4 O-rings shall be made of a material conforming to TypeII of Spec

24、ification D 4732.6.5 The polyolefin heat-shrinkable tubing shall met require-ments of Test Methods D 2671.7. Other Requirements7.1 Dimensional RequirementsCable-entry seals shallconform to the dimensional requirements of Tables 1-6. Type Icable-entry seals are presented in Fig. 1 and Fig. 2. Type II

25、cable-entry seals are presented in Fig. 3 and Fig. 4. Right-anglecable-entry seals (Types III and IV) are presented in Fig. 5 andFig. 6.7.2 Performance Requirements:7.2.1 Vibration ResistanceWhen cable-entry seals aretested as specified in 9.1, there shall be no evidence of crackingor loosening of p

26、arts.7.2.2 RuggednessWhen cable-entry seals are subjected toa mechanical abuse test as specified in 9.2, there shall be nocracking, breaking, distortion, or damage to the sample.7.2.3 Effectiveness of sealWhen cable-entry seals aretested as specified in 9.3, there shall be no evidence of leakagethro

27、ugh or around the cable entry seals.8. Workmanship, Finish, and Appearance8.1 Cable-entry seals shall be free from warp, cracks,chipped edges, or surfaces, blisters, uneven surfaces, scratches,dents, and flow lines. They shall be free from fins, burrs, andfrom unsightly finish caused by chipping, fi

28、lling, or grindingwithout subsequent buffing or polishing. All molded parts shallcleaned thoroughly of annealing mediums.9. Test Methods9.1 Conformance testing of a random sample may berequested by the purchaser in order to verify that selectedperformance characteristics specified herein have been i

29、ncor-porated in the cable-entry seal design and maintained inproduction.9.1.1 VibrationThe cable-entry seals shall be subjected tovibration testing as specified in IEC Standard 68-2-6. Thefollowing details shall apply:9.1.1.1 The cable-entry seals shall be complete with O-ringsand 1 to 2-m (3 to 6 f

30、t) lengths of cable of appropriate size.9.1.1.2 The free end of the cables shall be secured to preventexcessive cable whipping action during test.9.1.1.3 Tests are to be carried out in three perpendicularplanes.9.1.1.4 Duration of the test for no resonance condition shallbe 90 min at 30 Hz. Duration

31、 at each resonance frequency atwhich Q2 is recorded. It is recommended as guidance that Qdoes not exceed 5.9.1.1.5 Test range shall be 2 6 0.3 Hz to 13.2 Hzamplitude61 mm: 13.2 Hz to 100 Hzacceleration 67g.9.1.1.6 Nonconformance to the requirements of 7.2.1 shallbe cause for rejection.9.2 Mechanical

32、 Abuse Test:9.2.1 A mechanical abuse test shall be conducted on thesample cable-entry seal assembled on the end of a 2-m (6-ft)length of electrical cable of appropriate size.FIG. 1 Type ISingle-Legged Standard Cable Entry SealsF 1837M 97 (2007)29.2.2 The cable-entry seal shall be allowed to swing on

33、 aradius, while suspended by the electrical cable, from a verticalsurface and strike against a vertical flat steel plate on thatsurface. The vertical distance through which the cable entryseal is allowed to fall shall be 1.5 m (5 ft), and the number ofimpacts shall be ten.9.2.3 The cable-entry seal

34、shall be disassembled and exam-ined. Nonconformance to the requirements of 7.2.2 shall because for rejection.9.3 Level of EffectivenessA complete cable-entry sealwith O-ring installed and assembled properly and shrunk to acable or with a plug installed shall conform to the performancerequirements of

35、 NEMA 250. The NEMA enclosure typedesignation (4, 4X, 6, 6P) shall establish the appropriateenvironmental capability required of the installed cable-entryseal.9.3.1 Nonconformance to the requirements of 7.2.3 shall because for rejection.10. Inspection10.1 Visual and Dimensional ExaminationSamples sh

36、allbe examined visually to verify that the materials, design,construction, physical dimensions, marking, and workmanshipare as specified in the applicable requirements.11. Certification11.1 Material CertificationMaterial certification shall berequired from the manufacturers of the plastic material a

37、ndshirk-tubing to ensure the materials were manufactured,sampled, tested, and inspected in accordance with Specifica-tions D 4066 and D 3149. Material identity traceable to thiscertification shall be maintained throughout the manufacturingprocess.11.2 When specified in the purchase order or contract

38、, thepurchaser shall be furnished certification that samples repre-senting each lot have been either tested or inspected as directedin this specification and the requirements have been met. WhenFIG. 2 Type IMulti-Legged Standard Cable Entry SealsFIG. 3 Type IISingle-Legged Threaded Cable Entry Seals

39、FIG. 4 Type IIMulti-Legged Threaded Cable Entry SealsF 1837M 97 (2007)3specified in the purchase order or contract, a report of the testresults shall be furnished.12. Product Marking12.1 Each cable-entry seal shall be identified distinctly. Thename of the manufacturer, part number, identification of

40、 thisASTM standard, and other appropriate information shall beshown thereon.13. Packaging Requirements13.1 The seals shall be supplied by type as specified in Figs.1-6.13.2 The seals shall be packaged in conformance with goodcommercial practice unless otherwise specified. Individualtypes and sizes s

41、hall be neatly bundled or boxed. The exteriorshipping container shall be acceptable by parcel post orcommon carrier.13.3 Each bundle or container of seals shall be identifieddistinctly by a tag or label. The name of the manufacturer, thepart number of the seals, the quantity, and other appropriatein

42、formation shall be shown thereon.14. Quality Assurance14.1 Responsibility for InspectionUnless otherwise speci-fied in the contract or purchase order, the manufacturer isresponsible for the performance of all inspection requirementsas specified herein. Except as otherwise specified in thecontract or

43、 purchase order, the manufacturer may use his ownFIG. 5 Type IIIRight-Angle Cable Entry SealsFIG. 6 Type IVRight-Angle Cable Entry SealsF 1837M 97 (2007)4or nay other facilities suitable for the performance of theinspection requirements specified.14.2 Responsibility for ComplianceAll items must meet

44、all requirements of section 7. The inspection set forth in thisspecification shall become a part of the manufacturers overallinspection system or quality program. The absence of anyinspection requirements in this specification shall not relievethe manufacturer of the responsibility of assuring that

45、allproducts or supplied submitted to the customer for acceptancecomply with all the requirements of the contract. Sampling inquality conformance does not authorize submission of knowndefective material either indicated or actual, nor does it committhe customer to acceptance of defective material.15.

46、 Keywords15.1 cable-entry seal; cable penetrator; cable termination;cross-linked polyolefin heat-shrinkable tubing; electrical insu-lation; heat-shrinkable tubingTABLE 1 Type 1Single Legged Standard Cable Entry SealsACBATubingExpanded I.D. Recovered I.D. Overall Nominal(min) (max) I.D. (min) Recover

47、ed Recommended Part No.BLength Hole Diameter13.0 (0.50) 3.0 (0.12) 19.0 (0.75) 89.0 (3.50) 25.5 (1.00) CES S 1-119.0 (0.75) 6.5 (0.25) 19.0 (0.75) 89.0 (3.50) 25.5 (1.00) CES S 1-219.0 (0.75) 6.5 (0.25) 19.0 (0.75) 32.0 (1.25) 25.5 (1.00) CES S 1-328.5 (1.20) 13.0 (0.50) 28.0 (1.10) 95.0 (3.75) 35.0

48、 (1.38) CES S 1-435.0 (1.38) 13.0 (0.50) 28.0 (1.10) 95.0 (3.75) 44.5 (1.75) CES S 1-540.0 (1.70) 19.0 (0.75) 40.0 (1.60) 120.0 (4.75) 51.0 (2.00) CES S 1-670.0 (2.75) 19.0 (0.75) 53.0 (2.10) 102.0 (4.00) 60.0 (2.36) CES S 1-770.0 (2.75) 36.0 (1.43) 74.0 (2.90) 178.0 (7.00) 89.0 (3.50) CES S 1-8ADim

49、ensions shown are nominal and in millimeters (in).BPart numbers were established in the following way:CEScable entry seal,S or Tstandard or threaded, and1-1number preceding hyphen represents number legs; number following hyphen represents size type.TABLE 2 Type 1Multi-Legged Standard Cable Entry SealsABAMulti-Leg BootExpanded I.D. Recovered I.D.Min. Max. Overall Nominal(Each Leg) (Each Leg) I.D. (min) Recovered RecommendedNo. of Legs Length Hole Diameter Part No.B2 10.0 (0.40) 3.0 (0.11) 19.0 (0.75) 89.0 (3.50) 25.5 (1.00) CES S 2-12 15