BS-7655-1.4-1993.pdf
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1、BRITISH STANDARD BS 7655-1.4: 1993 Specification for Insulating and sheathing materials for cables Part 1: Elastomeric insulating compounds Section 1.4 Oil resisting types Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 11:55:02 GMT+00:00 2006, Uncontrolled Copy
2、, (c) BSI BS 7655-1.4:1993 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 02-1999 The following BSI references relate to the w
3、ork on this standard: Committee reference CIL/20 Draft for comment 92/25662 DC ISBN 0 580 22010 9 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, upo
4、n which the following 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
5、 of the Environment (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 i
6、n the drafting 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 Westfi
7、eld College Telecommunications 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 11:55:02 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 7655-1.4:1993 BSI
8、02-1999i Contents Page Committees responsibleInside front cover Forewordii 1Scope1 2Normative references1 3Definitions1 4Test requirements for physical and electrical properties1 Table 1 Type of oil resisting elastomeric insulation1 Table 2 Test methods (in accordance with BS 6469 unless otherwise s
9、tated)1 Table 3 Test requirements2 Table 4 Tolerances on temperature values2 List of referencesInside back cover Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 11:55:02 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 7655-1.4:1993 ii BSI 02-1999 Foreword This Sec
10、tion of BS 7655 has been prepared under the direction of the Cables and Insulation Standards Policy Committee. This Section specifies the physical and electrical properties of elastomeric insulation type OR I. For a general introduction to the BS 7655 series and a list of Parts and Sections, Part 0
11、should be consulted. A British Standard does not purport to include 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 Thi
12、s document comprises a front cover, an inside front cover, pages 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. Lice
13、nsed Copy: London South Bank University, London South Bank University, Fri Dec 08 11:55:02 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 7655-1.4:1993 BSI 02-19991 1 Scope This Section of BS 7655 specifies the physical and electrical properties of the oil resisting elastomeric insulating compound gi
14、ven in Table 1. The relevant test methods for verification of conformity are given in BS 6469. This compound is for use on coil end leads conforming to BS 6195 but may be used for other suitable applications as detailed in the cable specification. This Section is to be used in conjunction with BS 76
15、55-0. Table 1 Type of oil resisting elastomeric 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 places in the text and the publications are listed on the
16、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 references, any amendment to, or the latest edition of, t
17、he 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 the median value after ageing and the median value without a
18、geing 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 the mean of the two middle values if the number is even 4
19、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 test methods shall conform to the conditions specified in
20、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 material. 4.2 Sampling Unless otherwise stated in the British St
21、andard 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. TypeMaximum material operating temperature C General applica
22、tion OR 185Oil resisting TestMethod SectionClause Properties in the state as delivered 1.1:19929 Tensile strength and elongation at break Properties after ageing in air oven 1.2:19928.1 Tensile strength and elongation at break Properties after ageing in air bomb 1.2:19928.2 Tensile strength and elon
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