1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS 7870-1:2011LV and MV polymericinsulated cables for use bydistribution and generationutilitiesPart 1: General(Implementation of HD 603, 605,620, 626 and 627)Publishing and copy
2、right informationThe BSI copyright notice displayed in this document indicates when the documentwas last issued. BSI 2011ISBN 978 0 580 7006 4ICS 29.060.20The following BSI references relate to the work on this standard:Committee reference GEL/20/16Draft for comment 11/30214055 DCPublication history
3、First published October 1996Second (present edition), December 2011Amendments issued since publicationDate Text affectedBS 7870-1:2011 BRITISH STANDARDContentsForeword ii1 Scope 12 Normative references 13 Terms and definitions 24 Frequency of sample tests 3AnnexesAnnex A (informative) Guide to selec
4、tion and use of cables 4Annex B (normative) Insulation and oversheath materials 12Bibliography 16List of figuresFigure A.1 Drum storage View from the top 6Figure A.2 Drum axis position 6Figure A.3 Lifting of cable drums 7Figure A.4 Rolling of cable drums 7Figure A.5 Unwinding and rewinding of cables
5、 9List of tablesTable 1 Parts and sections of BS 7870 iiiTable B.1 Requirements for insulation materials 13Table B.2 Requirements for oversheath materials 14Summary of pagesThis document comprises a front cover, an inside front cover, pages i to vi,pages 1 to 16, an inside back cover and a back cove
6、r.BRITISH STANDARD BS 7870-1:2011 BSI 2011 iForewordPublishing informationThis part of BS 7870 is published by BSI and came into effect on31 December 2011. It was prepared by Subcommittee GEL/20/16, Medium/Highvoltage cables, under the authority of Technical Committee GEL/20, Electriccables. A list
7、of organizations represented on these committees can be obtainedon request to their secretary.SupersessionThis part of BS 7870 supersedes BS 7870-1:1996, which is withdrawn.Relationship with other publicationsBS 7870 implements the nationally applicable elements of HarmonizationDocuments HD 603, 605
8、, 620, 626 and 627, published by the EuropeanCommittee for Electrotechnical Standardization (CENELEC), in accordance withthe decision of the CENELEC Technical Board.BS 7870 applies to cables for fixed installations having a rated voltage U0/U upto and including 19/33 kV. Table 1 lists the parts and
9、sections which have beenpublished.BRITISH STANDARDBS 7870-1:2011ii BSI 2011BS 7870-1:2011 is to be read in conjunction with the appropriate parts andsections of BS 7870. Some parts and sections of BS 7870 have been revised andothers have been made obsolescent or withdrawn, as indicated in the follow
10、inglist. The publication date and status are shown in bold.BS 7870-2:2011BS 7870-3.10:2001BS 7870-3.11:2011BS 7870-3.12:2011BS 7870-3.20:2001BS 7870-3.21:2011Table 1 Parts and sections of BS 7870Part and section TitlePart 1 GeneralPart 2 Methods of testPart 3 Specification for distribution cables of
11、 rated voltage 0.6/1 kV3.10 PVC insulated combined neutral and earth copper wire concentric cables withcopper or aluminium conductors3.11 XLPE insulated combined neutral and earth copper wire concentric cables withcopper or aluminium conductors3.12 XLPE insulated combined neutral and earth copper wi
12、re concentric cables withcopper or aluminium conductors, having low emission of smoke and corrosivegases when affected by fire3.20 PVC insulated split concentric cables with copper or aluminium conductors3.21 XLPE insulated split concentric cables with copper or aluminium conductors3.22 XLPE insulat
13、ed split concentric cables with copper or aluminium conductors,having low emission of smoke and corrosive gases when affected by fire3.40 XLPE insulated copper wire waveform concentric cables with solid aluminiumconductors3.50 XLPE insulated, copper wire waveform or helical concentric cables with so
14、lidaluminium conductors, having low emission of smoke and corrosive gases whenaffected by firePart 4 Specification for distribution cables with extruded insulation of rated voltages of11 kV to 33 kV4.10 Single-core 11 kV to 33 kV cables4.11 Single-core 33 kV lead sheathed cables4.20 Three-core 11 kV
15、 cablesPart 5 Polymeric insulated aerial bundled conductors (ABC) of rated voltage 0.6/1 kVfor overhead distributionPart 8 Specification for multicore and multipair cables for installation above and belowground8.1 Single wire armoured and PVC sheathed multicore cable with copper conductors8.2 Single
16、 wire armoured and PVC sheathed multipair cable with copper conductors8.3 Single wire armoured and PVC sheathed multicore cable with copper conductors,having reduced fire propagation performance8.4 Single wire or double steel tape armoured and PVC sheathed multipair cablewith copper conductors, havi
17、ng reduced fire propagation performance8.5 Single wire armoured and unarmoured multicore cables with copper conductorsand non-halogenated sheath8.6 Single wire or double steel tape armoured and non-halogenated sheathedmultipair cable with copper conductorsBRITISH STANDARD BS 7870-1:2011 BSI 2011 iii
18、BS 7870-3.22:2011 (new section)BS 7870-3.40:2011BS 7870-3.50:2011BS 7870-4.10:2011BS 7870-4.11:2011BS 7870-4.12:2001 (withdrawn)BS 7870-4-13:2001 (withdrawn)BS 7870-4.20:2011BS 7870-5:2011BS 7870-6.1:1999 (obsolescent)BS 7870-6.2:1999 (obsolescent)BS 7870-6.3:1999 (obsolescent)BS 7870-7.1:2003 (obso
19、lescent)BS 7870-7.2:2003 (obsolescent)BS 7870-8.1:2003BS 7870-8.2:2003BS 7870-8.3:2003BS 7870-8.4:2003BS 7870-8.5:2003BS 7870-8.6:2003Information about this documentThis is a full revision of the standard, and brings the standard up to date inaccordance with current practice in the industry.Hazard w
20、arningsWARNING. This British Standard calls for the use of substances and/orprocedures that can be injurious to health if adequate precautions are nottaken. It refers only to technical suitability and does not absolve the userfrom legal obligations relating to health and safety at any stage.Use of t
21、his documentIt has been assumed in the preparation of this British Standard that theexecution of its provisions will be entrusted to appropriately qualified andexperienced people, for whose use it has been produced.BRITISH STANDARDBS 7870-1:2011iv BSI 2011Presentational conventionsThe provisions of
22、this standard are presented in roman (i.e. upright) type. Itsrequirements are expressed in sentences in which the principal auxiliary verb is“shall”.Commentary, explanation and general informative material is presented insmaller italic type, and does not constitute a normative element.Contractual an
23、d legal considerationsThis publication does not purport to include all the necessary provisions of acontract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legalobligations.BRITISH STANDARD BS 7870-1:2011 BSI 2011 vBRITISH STANDARDBS
24、 7870-1:2011This page deliberately left blankvi BSI 20111 ScopeThis British Standard gives generic definitions and specifies the frequency ofsample tests applicable to the BS 7870 series.NOTE Guidance on the selection and use of the cables specified in BS 7870 is givenin Annex A. Requirements for in
25、sulation and oversheath materials are specified inAnnex B.2 Normative referencesThe following referenced documents are indispensable for the application ofthis document. For dated references, only the edition cited applies. For undatedreferences, the latest edition of the referenced document (includ
26、ing anyamendments) applies.BS 7870-2, LV and MV polymeric insulated cables for use by distribution andgeneration utilities Part 2: Test methodsBS EN 60811-1-1, Insulating and sheathing materials of electric and opticalcables Common test methods Part 1-1: General application Measurement ofthickness a
27、nd overall dimensions Test for determining the mechanicalpropertiesBS EN 60811-1-2, Common test methods for insulating and sheathing materialsof electric and optical cables Part 1-2: General application Thermal ageingmethodsBS EN 60811-1-3, Insulating and sheathing materials of electric and opticalc
28、ables Common test methods Part 1-3: General application Methods fordetermining the density Water absorption tests Shrinkage testBS EN 60811-1-4, Insulating and sheathing materials of electric cables Commontest methods Part 1-4: General application Tests at low temperatureBS EN 60811-2-1, Insulating
29、and sheathing materials of electric and opticalcables Common test methods Part 2-1: Methods specific to elastomericcompounds Ozone resistance, hot set and mineral oil immersion testsBS EN 60811-3-1, Insulating and sheathing materials of electric cables Commontest methods Part 3: Methods specific to
30、PVC compounds Section 3.1:Pressure test at high temperature Tests for resistance to crackingBS EN 60811-3-2, Insulating and sheathing materials of electric cables Commontest methods Part 3: Methods specific to PVC compounds Section 2: Loss ofmass test Thermal stability testBS EN 60811-4-1, Insulatin
31、g and sheathing materials of electric and opticalcables Common test methods Part 4-1: Methods specific to polyethylene andpolypropylene compounds Resistance to environmental stress cracking Measurement of the melt flow index Carbon black and/or mineral fillercontent measurement in polyethylene by di
32、rect combustion Measurement ofcarbon black content by thermogravimetric analysis (TGA) Assessment ofcarbon black dispersion in polyethylene using a microscopeIEC 60050-461, International Electrotechnical Vocabulary Part 461: ElectriccablesBRITISH STANDARD BS 7870-1:2011 BSI 2011 13 Terms and definit
33、ionsFor the purposes of this British Standard the terms and definitions given inIEC 60050-461 and the following apply.3.1 rated voltagereference voltage for which the cable is designedNOTE This is expressed as a combination of the values U0, U and Um.3.2 rated voltage U0nominal power-frequency volta
34、ge between any conductor and armour or earth,for which the cable is suitable3.3 rated voltage Unominal power-frequency voltage between phase conductors, for which thecable is suitable3.4 maximum voltage Ummaximum sustained power-frequency voltage between phase conductors, forwhich the cable is suita
35、ble3.5 type of compoundcategory in which a compound is placed according to its properties, determinedby specified testsNOTE The type designation is not directly related to the composition of thecompound.3.6 cross-linked polyethylene (XLPE)thermosetting material formed by the cross-linking of thermop
36、lasticpolyethylene compound, either by chemical or by irradiation methods3.7 ethylene propylene rubber (EPR)cross-linked compound in which the elastomer is ethylene propylene, ethylenepropylene diene monomer (EPDM) or an equivalent synthetic elastomer3.8 thermoplastic polyvinyl chloride compound (PV
37、C)thermoplastic material comprising a combination of materials of which thecharacteristic constituent is polyvinyl chloride and/or one of its copolymers3.9 thermoplastic polyethylene compound (PE)thermoplastic material comprising a combination of materials of which thecharacteristic constituent is p
38、olyethylene and/or one of its copolymers3.10 polyolefin (PO)thermoplastic or cross-linked material in which the characteristic constituent is acopolymer of ethylene, such as ethylene vinyl acetate (EVA), ethylene ethylacrylate (EEA) or ethylene methyl acrylate EMA3.11 nominal valuevalue by which a q
39、uantity is designated and which is often used in tablesNOTE Usually, in BS 7870, nominal values give rise to values to be checked bymeasurements taking into account specified tolerances.3.12 approximate valuevalue which is only indicativeNOTE In BS 7870, values described as “approximate” do not cons
40、tituterequirements to be checked by measurement.BRITISH STANDARDBS 7870-1:20112 BSI 20113.13 routine teststests performed by the manufacturer on each manufactured length of cable tocheck whether the whole of each length meets the specified requirementsNOTE Tests classified as routine or sample may b
41、e required as part of any TypeApproval Scheme.3.14 sample teststests performed by the manufacturer on samples of completed cable, orcomponents taken from a completed cable, at a specified frequency, todetermine whether the finished product meets the specified requirementsNOTE Tests classified as rou
42、tine or sample may be required as part of any TypeApproval Scheme.3.15 type teststests made before supplying a particular type of cable on a general commercialbasis, to determine whether the cable has satisfactory performancecharacteristics to be suitable for the intended applicationNOTE Type tests
43、are of such a nature that, after they have been performed, theyneed not be repeated unless changes are made in the cable materials or design ormanufacturing process which might change the performance characteristics.3.16 triplex formationcable formation produced by laying up three complete single-co
44、re cables3.17 cable manufacturerorganization that has the capability to both produce and control the conformityof cable made to this standardNOTE See the particular parts and sections of this standard for information onmarking the cable with the manufacturers name and indentifier.4 Frequency of samp
45、le tests4.1 Conductor examination and check of dimensionsConductor examination, measurement of the thickness of insulation andoversheath, and measurement of the overall diameter shall be made on onelength from each manufacturing series of the same type and nominalcross-section of cable, but shall be
46、 limited to not more than 10% of the numberof lengths in any particular contract.4.2 Other sample testsOther sample tests shall be carried out on samples taken according to qualitycontrol procedures agreed between the manufacturer and the purchaser.BRITISH STANDARD BS 7870-1:2011 BSI 2011 3Annex A(i
47、nformative)Guide to selection and use of cablesA.1 ObjectThe object of this annex is to provide general recommendations for the selection(taking into account the cable system), storage, transportation and installationof the cables specified in BS 7870-3 and BS 7870-4.Specific guidance is given in th
48、e relevant sections of BS 7870-3 and BS 7870-4.In case of doubt as to the suitability of a cable for a particular use, furtherspecific information should be obtained from the cable manufacturer.A.2 Recommendations for selection of cablesA.2.1 GeneralThe cables specified in BS 7870-3 and BS 7870-4 ar
49、e designed to be installed inair (indoors and/or outdoors), or may be buried directly in free draining soil orin ducts or in special backfills.Cables specified in BS 7870-3 and BS 7870-4 are not specifically designed for use:a) as self supporting cables;b) as submarine cables;c) where subsidence is likely, unless special precautions are taken to minimizedamage;d) where any exposure to excessive heat is involved.A.2.2 System categoriesIn accordance with IEC 60183, three categor
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