【AS澳大利亚标准】AS NZS 1429.21998 Electric cables—Polymeric insulated Part 2 For working voltages .doc

AS/NZS 1429.2:1998Australian/New Zealand StandardÒElectric cables Polymeric insulatedPart 2: For working voltages above19/33 (36) kV up to and including76/132 (145) kVAS /NZS 1429.2:1998This Joint Australian/New Zealand S tandard was prepared by Joint Technical Commit tee EL/ 3, El ectric Wir es and Cables. It was approved on behalf of the Council of St andards Australi a on 17 November 1997 and on behalf of the Council of S tandards New Zealand on 17 November 1997. It was publi shed on5 February 1998.The foll owing interests are represented on Commit tee EL /3: Australasian Railways Associati onAustrali an Electrical and Electronic Manufacturers Associati onDepartment of Defence, Australi aEl ectrical regulatory authoriti esEl ectricit y S upply Associated of AustraliaInstit ution of Engineers, Australi aMinistry of Commerce, New ZealandNew Zealand Electrical Contractors Associati onNew Zealand Electrical and Electronic Manufacturers Federati onOffice of Energy, N.S.W.Testi ng interestsReview of Standards. To keep abreast of progress in industry, Joint Australian/ New Zealand Standards are subject to periodic review and are kept up to date by the issue of amendments or new editions as necessary. It is important therefore that Standards users ensure that they are in possession of the latest edition, and any amendments thereto.Full details of all Joint Standards and related publications will be found in the Standards Australia and Standards New Zealand Catalogue of Publications; this information is supplemented each month by the magazines The Australian Standard and Standards New Zealand, which subscribing members receive, and which give details of new publications, new editions and amendments, and of withdrawn Standards.Suggestions for improvements to Joint Standards, addressed to the head office of either Standards Australia or Standards New Zealand, are welcomed. Notification of any inaccuracy or ambiguity found in a Joint Australian/New Zealand Standard should be made without delay in order that the matter may be investigated and appropriate action taken.This Standard was issued in draft form for comment as DR 97035.AS/NZS 1429.2:1998Australian/New Zealand StandardÒElectric cables Polymeric insulatedPart 2: For working voltages above19/33 (36) kV up to and including76/132 (145) kVFirst published as AS/NZS 1429.2:1998.PUBLI SHED JOINTLY BY:STANDARDS AUSTRALI A1 The Crescen t,Homeb ush NSW 214 0 Au strali aSTANDARDS NEW ZEALA NDLe vel 10 , Radi o New Zea la nd House,15 5 The Terrace,We lli ngt on 600 1 New Ze ala ndIS BN 0 7337 1722 533AS/N ZS 1429.2:1 998PREFACEThis Standard w as prepared by the Joint Standards A ustralia/Standards N ew Zealand Committee EL/3, Electric Wires and Cables, to complement A S 1429.1 1993, Electric cables Polymeric insulated , Part 1: For working voltages 1.9/3.3(3.6) kV up to and including 19/33(36) kV.The objective of this Standard is to specify requirements for single-core cross-linked polyethyleneinsulatedcablesfor fixedinstallationsoperatingatvoltagesabove19/33(36) kV up to and including 76/132(145) kV.In the preparation of this Standard, consideration was given to the following publications and acknow ledgment is made of the assistance received:IEC229Tests on cable overs heaths w hich have a special protective function and are applied by extrusion502Extruded solid dielectric insulated power cables for rated voltages fr om 1 kV up to30 kV840Tests for power cables w ith extruded insulation for rated voltages above 30 kV (Um = 36 kV) up to 150 kV (U m = 170 kV )811Common test methods for insulating and sheathing materials of electric cables (all parts)AE ICCS7Specifications for crosslinked polyethylene insulated shielded pow er cables rated69 through 138 kVThe nominal cross-sectional areas of the conductors specified herein are identical with the values specified in AS 1125, Conductors in insulated electric cables and flexible cords . Additional conductor sizes referenced are specified in IEC 228, Conductors of insulated cables . The dimensions for non-metallic sheath thicknesses are based on the values recommended in IEC 502. Certain tests and criteria in this Standard are more stringent than those in IEC 840.One type of insulation compound is specified in this Standard, namely insulation comprising cross-linked polyethylene (X LPE).Although the Standard provides tables of insulation thicknesses and the necessary information to establish precisely the dimensions of the cable protective coverings, no cable dimension tables are provided owing to the variety of cable constructions that could affect such dimensions.The term s normative and informative have been used in this Standard to define the application of the appendix to w hich they apply. A norm ative appendix is an integral part of a Standard, w hereas an informative appendix is only for information and guidance.Statements expressed in mandatory term s in notes to tables and figures are deemed to be requirements of this Standard.CONTENTSPageSECTIO N 1 SCOPE A ND GE N ERA L1.1SCO PE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51.2REFERENCED D O CUMEN TS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51.3DE FIN ITION S . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5SECTIO N 2 CON STRUCTIO N2.1GE N ERA L . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72.2OP ERATIN G V OL TAG ES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .82.3MAX IMU M CON DU CTO R TEMPERA TU RE . . . . . . . . . . . . . . . . . . . . . 82.4CON DU CTO RS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82.5CON DU CTO R SCREEN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .82.6IN SUL A TION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92.7EX TRUD ED IN SU LAT ION SCREEN . . . . . . . . . . . . . . . . . . . . . . . . . . . 92.8WA TER BLO CKIN G . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .102.9MOISTU RE BARRIER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102.10METAL SH EA TH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .102.11METAL LIC SCREEN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102.12BIN DE RS AN D BA RRIER TA PES . . . . . . . . . . . . . . . . . . . . . . . . . . . . .112.13NO N -META LLIC SH EA TH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .112.14PRO TECTION FROM IN SECT A TTA CK (O PTIO N AL ) . . . . . . . . . . . . . .122.15CABLE ID EN TIFICA TION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .122.16METRE MARKI N G ON CA BLE (O PTIO NA L) . . . . . . . . . . . . . . . . . . . . 122.17PREPA RAT IO N FO R DE LIV ERY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .122.18MARKI N G O F DRUMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .123.1GE N ERA L . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133.2CHECK ON INS U LA TIO N THI CKN ESS OF CABLE FO RELECTRICAL TY PE TESTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .133.3SELECTIO N O F SA MPLES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .133.4CABLE CH ARACTERISTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .133.5PA RTIA L DI SCH ARG E TEST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .183.6HI G H V O LTAG E TEST FOR 30 MIN . . . . . . . . . . . . . . . . . . . . . . . . . . . 183.7PA RTIA L DI SCH ARG E TEST A FTER BEN DI N G . . . . . . . . . . . . . . . . . . 183.8MEA SU REMEN T O F D DF (tan d) AT AMBIENT TEMPERA TU RE . . . . .193.9MEA SU REMEN T O F D DF (tan d) AT OP ERA TIN G TEMPERA TU RE . . .193.10PA RTIA L DI SCH ARG E TEST A FTER HE A T CYCLIN G . . . . . . . . . . . . .193.11IMPUL SE TEST FO LLO WED BY A H IG H VO LTA GE TEST . . . . . . . . .193.12RE-QU A LIFI CAT ION TESTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20SECTIO N 3 TESTSAP PEN D ICESATHE FICTITIOU S CA LCUL ATION METHOD FOR THE DE TERMIN AT ION O F TH E D IMENS IO N S O FPageIN SUL A TION SCREEN AN D PROT ECTIV E CO VE RIN GS . . . . . . . . . . . . . 21BPU RCHA SI NG GU IDE LIN ES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23CWA TER PEN ETRATIO N TEST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24DRECOMMEN DE D D IA METER OF DRU M BARREL A NDIN STA LLA TIO N BEN D IN G RA DI US FO R CABLES . . . . . . . . . . . . . . . . . 26EFREQU ENCY OF SA MPLE TEST SELECTIO N AN DRETEST PRO CEDU RE FOR SA MPLE TESTS . . . . . . . . . . . . . . . . . . . . . . 27FROU ND ING O F N UMBERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28GGU IDE TO THE SELECTION O F A CCESS O RIES FORHV CABLES WITH EX TRU DE D IN SU LAT IO N . . . . . . . . . . . . . . . . . . . . . 29HTESTS A FTER IN STA LLAT ION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33Ó CopyrightSTANDARDS AUSTRALIA / STANDARDS NEW ZEALANDUsers of Standards are reminded that copyright subsists in all Standards Australia and Standards New Zealand publications and software. 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This policy may be varied by Standards Australia or Standards New Zealand at any time.STANDARDS AUSTRALIA / STANDARDS NEW ZEALANDAustralian/ New Zealand StandardElectric cables Polymeric insulatedPart 2: For working voltages above 19/33 (36) kVup to and including 76/132 (145) kVS E C T I O N1S C O P EA N DG E N E R A L1.1SCO PEThisStandardspecifiesrequirementsforsingle-corecross- linked polyethylene (X LPE) insulated cables for fixed installations for electricity supply.NOTE: Opti onal requirements for water-blocking, protection from insect att ack and metre marking on cable are provided in Cl auses 2.8, 2.14 and 2.16 respectively.1.2R EFEREN CED D OCU MENTSThe following documents are referred to in thisStandard:AS1018Partial discharge measurements1125Conductors in insulated electric cables and flexible cords1660Test methods for electric cables, cords and conductors (all parts)1931High voltage testing techniques (all parts)2893Electric cables Lead and lead alloy sheaths CompositionAS /NZ S2857Timber drums for insulated electric cables and bare conductors3983Metal drums for insulated electric cables and bare conductorsIEC228Conductors of insulated cables1.3D EFINI TIONSFor the purposes of this Standard, the relevant definitions in the referenced Standards and those below apply.1.3.1Ap proximate value a value w hich is neither guaranteed nor checked.1.3.2Condu ctor screen a layer or layers of non-metallic semiconductive material applied directly over the conductor.1.3.3Core (of acable) anassemblycomprisinga conductor,semiconductive conductor screen, insulation and semiconductive insulation screen.1.3.4Fictitious values values calculated according to an equation based only on the cross-sectional area of a conductor, the number of cores and specified component dimensions, and w hich ignores conductor shape, degree of compaction of conductors and the possibility of components having dimensions other than specified (see Appendix A ).1.3.5Gross cross-sectional area in relation to the metallic screen, the product of the calculated cross-s ectional area of one screen wire based on its nominal diameter, multiplied by the total number of screen wires in the cable.1.3.6Insulation screen a layer or layers of non-metallic semiconductive material applied directly over the insulation.COPYRI GHT1.3.7Length of lay in relation to the metallic screen, the axial distance between successive turns of the helix of a screen wire.1.3.8Maximum conductor