1、 g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58types of sleeving Sheet 248: General purpose, heat-shrinkable, dual wall polyolefin sleeving, flame
2、 retarded, shrink ratios 2:1, 3:1, 4:1The European Standard EN 60684-3-248:2007 has the status of a British StandardICS 29.035.20Flexible insulating sleeving Part 3: Specifications for individual BRITISH STANDARDBS EN 60684-3-248: 2007BS EN 60684-3-248:2007This British Standard was published under t
3、he authority of the Standards Policy and Strategy Committee on 29 June 2007 BSI 2007ISBN 978 0 580 50856 1Amendments issued since publicationAmd. No. Date CommentsThis publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct applicatio
4、n.Compliance with a British Standard cannot confer immunity from legal obligations.National forewordThis British Standard was published by BSI. It is the UK implementation of EN 60684-3-248:2007. It is identical with IEC 60684-3-248:2007. The UK participation in its preparation was entrusted by Tech
5、nical Committee GEL/15, Solid electrical insulating materials, to Subcommittee GEL/15/3, Material specifications.A list of organizations represented on this committee can be obtained on request to its secretary.EUROPEAN STANDARD EN 60684-3-248 NORME EUROPENNE EUROPISCHE NORM April 2007 CENELEC Europ
6、ean Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2007 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for
7、 CENELEC members. Ref. No. EN 60684-3-248:2007 E ICS 29.035.20 English version Flexible insulating sleeving - Part 3: Specifications for individual types of sleeving - Sheet 248: General purpose, heat-shrinkable, dual wall polyolefin sleeving, flame retarded, shrink ratios 2:1, 3:1, 4:1 (IEC 60684-3
8、-248:2007) Gaines isolantes souples - Partie 3: Spcifications pour types particuliers de gaines - Feuille 248: Utilisation gnrale, thermortractable, gaine double paroi en polyolfine, retarde la flamme, rapport de rtreint 2:1, 3:1, 4:1 (CEI 60684-3-248:2007) Isolierschluche - Teil 3: Anforderungen fr
9、 einzelne Schlauchtypen - Blatt 248: Polyolefin-Wrmeschrumpfschluche mit Innenbeschichtung, Standardtyp, flammwidrig, Schrumpfverhltnisse 2:1, 3:1, 4:1 (IEC 60684-3-248:2007) This European Standard was approved by CENELEC on 2007-04-01. CENELEC members are bound to comply with the CEN/CENELEC Intern
10、al Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CENELEC mem
11、ber. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions. CENELE
12、C members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia,
13、Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Foreword The text of document 15/359/FDIS, future edition 1 of IEC 60684-3-248, prepared by IEC TC 15, Solid electrical insulating materials, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 60684-3-248 on 2
14、007-04-01. The following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2008-01-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2010-04-01
15、 Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 60684-3-248:2007 was approved by CENELEC as a European Standard without any modification. _ 2 EN 60684-3-248:2007CONTENTS INTRODUCTION.4 1 Scope .6 2 Normative references5 3 Designation 6 4 Condition
16、s of test6 5 Requirements .6 6 Sleeving conformance.6 7 Elevated temperature performance test.7 Figure 1 Test assembly for elevated temperature performance .7 Table 1 Size of stepped mandrel for elevated temperature performance test.7 Table 2 Dimensional requirements Type AL and AH.8 Table 3 Dimensi
17、onal requirements Type BL and BH.8 Table 4 Dimensional requirements Type CL and CH 9 Table 5 Property requirements .10 Table 6 Requirements for breakdown voltage .11 Table 7 Resistance to selected fluids12 Table 8 Additional property requirements12 Annex ZA (normative) Normative references to intern
18、ational publications with their correspondingNormative references to international publications with their corresponding European publications European publications135 3 EN 60684-3-248:2007INTRODUCTION This international Standard is one of a series which deals with flexible insulating sleeving for e
19、lectrical purposes. The series consists of three parts: Part 1: Definitions and general requirements ( IEC 60684-1) Part 2: Methods of test ( IEC 60684-2 ) Part 3: Specifications for individual types of sleeving ( IEC 60684-3 ) This standard comprises one of the sheets of Part 3 as follows: Sheet 24
20、8: General purpose, heat-shrinkable, dual wall polyolefin sleeving, flame retarded, shrink ratios 2:1, 3:1, 4:1 4 EN 60684-3-248:2007FLEXIBLE INSULATING SLEEVING Part 3: Specifications for individual types of sleeving Sheet 248: General purpose, heat-shrinkable, dual wall polyolefin sleeving, flame
21、retarded, shrink ratios 2:1, 3:1, 4:1 1 Scope This part of IEC 60684 gives the requirements for six types of general purpose, heat shrinkable dual wall polyolefin sleevings, flame retarded with nominal shrink ratios of 2:1, 3:1 or 4:1 and available in low and high temperature adhesive inner walls. T
22、he low temperature adhesive sleeving has been found suitable for temperatures up to 105 C and the high temperature adhesive sleeving has been found suitable for temperatures up to 125 C. Type AL: 2:1 shrink ratio, internal diameter up to 51 mm, low temperature adhesive inner wall. Type AH: 2:1 shrin
23、k ratio, internal diameter up to 51 mm, high temperature adhesive inner wall. Type BL: 3:1 shrink ratio, internal diameter up to 40 mm, low temperature adhesive inner wall. Type BH: 3:1 shrink ratio, internal diameter up to 40 mm, high temperature adhesive inner wall. Type CL: 4:1 shrink ratio, inte
24、rnal diameter up to 52 mm, low temperature adhesive inner wall. Type CH: 4:1 shrink ratio, internal diameter up to 52 mm, high temperature adhesive inner wall. The sleeving consists of an outer layer being of a flexible cross-linked polyolefin. The inner wall consists of a hot melt adhesive that flo
25、ws and fuses during the shrinking process to provide a bond. These sleevings are normally supplied in colour black. Sizes or colours other than those listed in this standard may be available as custom items. These items are considered to comply with this standard if they comply with the property req
26、uirements listed in Tables, 5 and 6 and Table 8 where applicable, with the exception of dimensions. Materials which conform to this specification meet established levels of performance. However, the selection of a material by a user for a specific application should be based on the actual requiremen
27、ts necessary for adequate performance in that application and not based on this specification alone. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the lat
28、est edition of the referenced document (including any amendments) applies. IEC 60684-1:2003, Flexible insulating sleeving Part 1: Definitions and general requirements. 5 EN 60684-3-248:2007IEC 60684-2:1997, Flexible insulating sleeving Part 2: Methods of test1)Amendment 1 (2003) Amendment 2 (2005) I
29、EC 60757: 1983, Codes for designation of colours ISO 1817:2005, Rubber, vulcanized Determination of the effect of liquids 3 Designation This sleeving shall be identified by the following designation: Description IEC publica-tion number IEC part number IEC sheet number Type Size (expanded/ recovered
30、internal diameter, in millimetres) Colour Table 8 Code Sleeving IEC 60684 3 248 AL 12,7/6,4 BK X NOTE The addition of “X” at the end of the designation indicates that the properties contained in Table 8 have been agreed upon and are included in the purchase contract. Any abbreviation of colour shall
31、 comply with IEC 60757. Where no abbreviation is given, the colour shall be written in full. 4 Conditions of test Unless otherwise specified, the sleeving shall be shrunk in a forced air circulation oven for (5 1) min at 200 C 5 K prior to testing. 5 Requirements In addition to the general requireme
32、nts given in IEC 60684-1, the sleeving shall comply with the requirements in Tables 2, 3, 4 and 5, 6 and 8 where applicable. 6 Sleeving conformance Conformance to the requirements of this specification shall normally be based on the results obtained for black sleeving of the following sizes: Type AL
33、 and AH: 12,7 mm / 6,4 mm; Type BL and BH: 24 mm / 8 mm; Type CL and CH: 32 mm / 8 mm. The colour fastness to light shall be determined for all colours. _ 1)A consolidated edition 2.1 exists, including IEC 60684-2:1997 and its Amendment 1 (2003). 6 EN 60684-3-248:20077 Elevated temperature performan
34、ce test Three specimens for each size as detailed in Table 1 shall be tested. (100 2) mm lengths of expanded sleeving shall be cut and recovered, according to the manufacturers or suppliers recommendations, onto the appropriate size of stepped mandrel, as detailed in Figure 1. After recovery onto th
35、e stepped mandrel, the assembly shall be allowed to cool to room temperature and the lengths of sleeving over the masking tape shall be removed. The assembly shall then been conditioned for (24 0,5) h in an oven at the temperature specified in Table 8. On removal from the oven the assembly shall be
36、allowed to cool to room temperature and any movement of the sleeving away from the masking tape on the Y diameter shall be measured as specified in Table 8 to an accuracy of 1 mm. All measurements shall be recorded and the result is the mean of the three measurements. 50 2 Aluminium stepped mandrel
37、according to Table 1 Sleeving Masking tape All dimensions in millimetres 25 250 225 2YXMasking tapeIEC 287/07 Figure 1 Test assembly for elevated temperature performance Table 1 Size of stepped mandrel for elevated temperature performance test. Diameters mm Type Size X Y AL and AH 12,7/6,4 6,4 0,1 1
38、0 1 BL and BH 24/8 8,0 0,1 20 1 CL and CH 32/8 8,0 0,1 26 1 7 EN 60684-3-248:2007Table 2 Dimensional requirements Type AL and AH Internal diameter Recovered total wall thickness Recovered meltable wall thickness Size code mm mm mm Expanded min. Recovered max. Nominal a3,2/1,6 3,2 1,6 0,70 0,10 0,10
39、4,8/2,4 4,8 2,4 0,70 0,10 0,10 6,4/3,2 6,4 3,2 0,75 0,15 0,13 9,5/4,8 9,5 4,8 0,75 0,15 0,13 12,7/6,4 12,7 6,4 0,80 0,15 0,15 19,0/9,5 19,0 9,5 0,90 0,15 0,15 25,4/12,7 25,4 12,7 1,10 0,20 0,20 38,0/19,0 38,0 19,0 1,20 0,20 0,20 51,0/25,4 51,0 25,4 1,50 0,25 0,40 aFor customer information only. In t
40、hose cases where the inner wall distorts or flows during recovery, it may not be possible to determine the recovered inside diameter accurately. In these cases, the sleeving may be recovered over a mandrel or plug gauge of the specified diameter after recovery for the size being measured. Following
41、recovery, the specimen shall be examined for complete contact with the mandrel or plug gauge to establish compliance with the requirements for recovered diameter. Table 3 Dimensional requirements Type BL and BH Internal diameter Recovered total wall thickness Recovered meltable wall thickness Size c
42、ode mm mm mm Expanded min. Recovered max. Nominal a3/1 3 1 1,0 0,30 0,5 4,5/1,5 4,5 1,5 1,0 0,30 0,5 6/2 6 2 1,0 0,30 0,6 9/3 9 3 1,4 0,30 0,6 12/4 12 4 1,8 0,40 0,8 19/6 19 6 2,2 0,60 0,8 24/8 24 8 2,5 0,60 1,0 40/13 40 13 2,5 0,60 1,0 aFor customer information only. In those cases where the inner
43、wall distorts or flows during recovery, it may not be possible to determine the recovered inside diameter accurately. In these cases, the sleeving may be recovered over a mandrel or plug gauge of the specified diameter after recovery for the size being measured. 8 EN 60684-3-248:2007Following recove
44、ry, the specimen shall be examined for complete contact with the mandrel or plug gauge to establish compliance with the requirements for recovered diameter. Table 4 Dimensional requirements Type CL and CH Internal diameter Recovered total wall thickness Recovered meltable wall thickness Size code mm
45、 mm mm Expanded min. Recovered max. Nominal a4/1 4 1 1,0 0,30 0,5 8/2 8 2 1,0 0,30 0,5 12/3 12 3 1,4 0,30 0,6 16/4 16 4 1,8 0,40 0,8 24/6 24 6 2,2 0,60 0,8 32/8 32 8 2,5 0,60 1,0 52/13 52 13 2,5 0,60 1,0 aFor customer information only. In those cases where the inner wall distorts or flows during rec
46、overy, it may not be possible to determine the recovered inside diameter accurately. In these cases, the sleeving may be recovered over a mandrel or plug gauge of the specified diameter after recovery for the size being measured. Following recovery, the specimen shall be examined for complete contac
47、t with the mandrel or plug gauge to establish compliance with the requirements for recovered diameter. 9 EN 60684-3-248:2007Table 5 Property requirements Property IEC 60684-2 clause or subclause Units Max. or Min. Requirements Remarks Dimensions Internal diameter Wall thickness Concentricity expande
48、d 3 3.1.2 3.3.2 3.3.3 mm mm % Min. Tables 2, 3 and 4 Tables 2, 3 and 4 Tables 2 and 3: 60 Table 4: 50 Heat shock Tensile strength Elongation at break 6 19.1 and 19.2 19.1 and 19.2 MPa % Min. Min. 7 150 Heat at 200 C 5K Longitudinal change 9 % Max. Type A and B 15 +1 Type C 20 +1 Heat the expanded sleeving at 200 C 5 K for (5 1 ) min Bending at low temperature 14 No cracking shall be visible Test at 55 C 3 K after conditioning at the same temperature for 4 h For strips, the mandrel shall be between 15 and 17 times the wall thickness. Full section sleeving is
