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1、BRITISH STANDARD BS 7655-1.3: 1993 Specification for Insulating and sheathing materials for cables Part 1: Elastomeric insulating compounds Section 1.3 XLPE Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 11:54:46 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 76
2、55-1.3:1993 This British Standard, having been prepared under the direction of the Cables and Insulation Standards Policy Committee, was published under the authority of the Standards Board and comes into effect on 15 April 1993 BSI 01-1999 The following BSI references relate to the work on this sta
3、ndard: Committee reference CIL/20 Draft for comment 92/25662 DC ISBN 0 580 22009 5 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Cables and Insulation Standards Policy Committee (CIL/-) to Technical Committee CIL/20, upon which the fol
4、lowing bodies were represented: Aluminium Federation Association of Consulting Engineers Association of Manufacturers of Domestic Electrical Appliances British Approvals Service for Cables British Cable Makers Confederation British Plastics Federation British Steel Industry Department of the Environ
5、ment (Property Services Agency) Department of Trade and Industry (Consumer Safety Unit, CA Division) Electricity Association Engineering Equipment and Materials Users Association Institution of Electrical Engineers London Regional Transport The following bodies were also represented in the drafting
6、of the standard, through subcommittees and panels: British Railways Board British Rubber Manufacturers Association Ltd. British Telecommunications plc ERA Technology Ltd. GAMBICA (BEAMA Ltd.) Institution of Incorporated Executive Engineers London Underground Ltd. Queen Mary and Westfield College Tel
7、ecommunications Cables Group of BCMC Warrington Fire Research Centre Amendments issued since publication Amd. No.DateComments Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 11:54:46 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 7655-1.3:1993 BSI 01-1999i Conten
8、ts Page Committees responsible Inside front cover Forewordii 1 Scope 1 2 Normative references 1 3 Definitions 1 4 Test requirements for physical and electrical properties 1 Table 1 Type of cross-linked insulation 1 Table 2 Test methods 1 Table 3 Test requirements 2 Table 4 Tolerances on temperature
9、values 2 List of references Inside back cover Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 11:54:46 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 7655-1.3:1993 ii BSI 01-1999 Foreword This Section of BS 7655 has been prepared under the direction of the Cables
10、 and Insulation Standards Policy Committee. This Section specifies the physical and electrical properties of the cross-linked compounds type GP 8. For a general introduction to the BS 7655 series and a list of Parts and Sections, Part 0 should be consulted. A British Standard does not purport to inc
11、lude all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, page
12、s i and ii, pages 1 and 2, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Licensed Copy: London South Bank University, London South Bank Univ
13、ersity, Fri Dec 08 11:54:46 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 7655-1.3:1993 BSI 01-19991 1 Scope This Section of BS 7655 specifies the physical and electrical properties of the cross-linked insulating compound given in Table 1. The relevant test methods for verification of conformity are
14、 given in BS 6469. This Section is to be used in conjunction with BS 7655-0. Table 1 Type of cross-linked insulation 2 Normative references This Section of BS 7655 incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate
15、places in the text and the publications are listed on the inside back page. For a dated reference, only the edition cited applies; any subsequent amendments to or revisions of the publication apply to this British Standard only when incorporated in the reference by amendment or revision. For undated
16、 references, any amendment to, or the latest edition of, the cited publication applies. 3 Definitions For the purposes of this Section of BS 7655, the definitions given in BS 1755-1, BS 1755-2, BS 3558 and BS 4727-2:Group 08 apply, together with the following. 3.1 variation the difference between th
17、e median value after ageing and the median value without ageing expressed as a percentage of the latter 3.2 median value when several test results have been obtained and ordered in an increasing or decreasing succession, the median is the middle value if the number of available values is odd and is
18、the mean of the two middle values if the number is even 4 Test requirements for physical and electrical properties 4.1 General 4.1.1 The test methods shall be as specified in Table 2 and the methods of sampling and pre-conditioning shall be as described in 4.2 and 4.3. The temperatures used for the
19、test methods shall conform to the conditions specified in 4.4. Table 2 Test methods (in accordance with BS 6469 unless otherwise stated) 4.1.2 When tested by the methods specified in 4.1.1, the properties shall be in accordance with the requirements given in Table 3 for the particular type of materi
20、al. 4.2 Sampling Unless otherwise stated in the British Standard for the particular cable, the tests on insulation shall be made on samples from each core if the cable has one, two or three cores and on samples from three cores (of differing colours if any) if the cable has more than three cores. 4.
21、3 Pre-conditioning The tests shall be carried out not less than 16 h after extrusion and cross-linking. TypeMaximum material operating temperature General application C GP 890Ordinary duty XLPE TestMethod SectionClause Properties in the state as delivered 1.1:19929 Tensile strength and elongation at
22、 break Properties after ageing in air oven 1.2:19928.1 Tensile strength and elongation at break Water absorption (gravimetric) 1.3:19929 Hot set test2.1:19929 Insulation resistance constant99.2:1992 8 Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 11:54:46 GMT+
23、00:00 2006, Uncontrolled Copy, (c) BSI BS 7655-1.3:1993 2 BSI 01-1999 Table 3 Test requirements 4.4 Temperatures for test methods 4.4.1 Ambient temperature Tests shall be made at an ambient temperature within the range 5 C to 35 C unless otherwise specified in the details for the particular test. 4.
24、4.2 Tolerances on temperature values Unless otherwise stated in the particular specification, the tolerances on temperature values quoted in the test methods shall be as given in Table 4. Table 4 Tolerances on temperature values TestRequirements for insulation type GP 8 Properties in the state as de
25、livered Minimum tensile strength Minimum elongation at break N/mm2 % 12.5 200 Properties after ageing in air oven TemperatureC135 Durationh7 24 Maximum variation for tensile strength%25 Maximum variation for elongation at break%25 Water absorption (gravimetric) TemperatureC85 Durationh14 24 Maximum
26、variation in mass mg/cm2 1 Hot set test TemperatureC200 Durationmin15 Mechanical stress N/mm2 0.2 Requirements Maximum elongation under load%175 Maximum elongation after unloading%15 Insulation resistance constant Minimum K value at 90 CMkm3.67 Specified temperature, t C Tolerance C 40 # t # 0 2 0 1
27、50 3 Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 11:54:46 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 7655-1.3.:1993 BSI 01-1999 List of references (see clause 2) Normative references BSI standards publications BRITISH STANDARDS INSTITUTION, London BS 1755
28、, Glossary of terms used in the plastics industry. BS 1755-1:1982, Polymer and plastics technology. BS 1755-2:1974, Manufacturing processes. BS 3558:1980, Glossary of rubber terms. BS 4727, Glossary of electrotechnical, power, telecommunication, electronics, lighting and colour terms. BS 4727-2, Ter
29、ms particular to power engineering. BS 4727-2:Group 08:1986, Electric cable terminology. BS 6469, Common test methods for insulating and sheathing materials of electric cables. BS 6469-1, Methods for general application. BS 6469-1.1:1992, Measurement of thickness and overall dimensions Tests for det
30、ermining the mechanical properties. BS 6469-1.2:1992, Thermal ageing methods. BS 6469-1.3:1992, Methods for determining the density Water absorption tests Shrinkage test. BS 6469-2, Methods specific to elastomeric compounds. BS 6469-2.1:1992, Ozone resistance test Hot set test Mineral oil immersion
31、test. BS 6469-99, Test methods used in the United Kingdom but not specified in Parts 1 to 5. BS 6469-99.2:1992, Electrical tests. BS 7655, Specification for insulating and sheathing materials for cables. BS 7655-0:1993, General introduction. Licensed Copy: London South Bank University, London South
32、Bank University, Fri Dec 08 11:54:46 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BSI 389 Chiswick High Road London W4 4AL | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
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