IS 7098-1 (1988): Crosslinked polyethylene insulated PVC ...

1 Disclosure to Promote the Right To InformationWhereas the Parliament of India has set out to provide a practical regime of right to information for citizens to secure access to information under the control of public authorities, in order to promote transparency and accountability in the working of every public authority, and whereas the attached publication of the Bureau of Indian Standards is of particular interest to the public, particularly disadvantaged communities and those engaged in the pursuit of education and knowledge, the attached public safety standard is made available to promote the timely dissemination of this information in an accurate manner to the public. ! $ ' + - Satyanarayan Gangaram Pitroda Invent a New India Using Knowledge 0 1 ' 5 Jawaharlal Nehru Step Out From the Old to the New 1 + , 1 + Mazdoor Kisan Shakti Sangathan The Right to Information, The Right to Live !

2 > 0 B Bhart hari N ti atakam Knowledge is such a treasure which cannot be stolen Invent a New India Using Knowledge IS 7098-1 (1988): Crosslinked polyethylene insulated PVCsheathed cables, Part 1: For working voltage upto andincluding 1 100 V [ETD 9: Power Cables]REAFFI~~!)d00~,--.'"18 :7011 ( ).,_( R fflrmed2000 )IndianStandardSPECIFICATIONFORCROSSLINK EDPOLYETHYLENEINSULATEDPVCSHEATHEDCABLES PART 1 FORWORKINGVOLTAGES UP TOANDINCLUDING1100 VOLTS( FirstRevision)FourthReprintSEPTEMBER2003 UDC621-315-221-8 678-742-2 CCopyright1990 BUREAUOFINDIANSTANDARDSMANAKBHAVAN, AMENDMENTNO. 1 APRIL1994 TOIS7098(PART1) : 1988 CROSSLINKEDPOLYETHYLENEINSULATED PVCSHEATHEDCABLESPART 1 FOR WORKING VOLTAGES UP TO AND INCLUDING1100V( SecondRevision)(Title)-Tobechanged as follows:'IndianStandardCROSS-LINKEDPOLYE THYLENEINSUlATEDTHERMOPLASTICSHEATHEDCAB LES-SPECIFICATIONPart1 FOR WORKING VOLTAGES UP TO AND INCLUDING1100V'(Page1, ) -Insert thefollowingclause subsequent clauses:' specialcategoryof cableswithimprovedfireperformance has beenincluded in cables isgiven in AppendixA.

3 '(Page1, ) -Addnew :' standard also covers cables withimprovedfireperformance,categories Cl and0,asgivenin Appendix A. For sucbcablesadditionalrequirementshavebeen includedwherever necessary( , , ).'NOTE-Normalcablesto thisstandardcanbedassified '[Page2,clause'.1(b) ] -Substitute'formedwire'for'strip'.(Page3 , ) - Substitute the following for the first sentence:'Thegalvanised steelwiresfannedwires/tapesshallcomplywi ththerequirementsof IS 3975 : 1988, except ,shallnot apply.'Grl (Page3, ) :' cables withimprovedfireperformance,theoutershea thshall,inaddition,meet therequirementoftestsapplicableforthereq uiredcategory( ).'(Page7, ) -Substitutetbefollowingfor tbeexisting:' Cables-Thethicknessofoutersheathshanbeno tlesstban tbeminimumvaluesspecifiedineolSofTable8. '( Page7, ) :, forcableswithimprovedtireperformanceas ) (uDderprepantion)b)Flameretardaneetest ) ) ) (Underpreparation)b) ) ) Test for specific of smokee) )Testforbalogenacid ) NOTES:1.

4 ForcateaoryCI,tests(8)and(d) are tobeperformedon samplestakenfrom ,andpreparedin the (a).(e),(t)anda)aretobeperformedODsample stakenfrom outersheath, ISapplicable,andpreparedincbemlnnerliven in tbe relevant test method.'(Page8, ) - Add :' for cable withimprovedfireperfonnanceasperthecateg oriesgiveninAppendixA:CategoryTest01 NoadditionaItestsCla)Oxygenindextestb) FlameretardancetestonsinglecableC2a) Oxygenindextestb) Flameretardancetest onsinglecablec)Testforspecificopticalden sityofsmoked)Testforhalogenacidgasevolut ion'(Page8, ) -Renumber this clause as' '- SubstituteIIAppendixB'forIIAppeadixA'in second line.(Page8, ,line4 ) -Substitute'8dc'for'anac'.(Page8, ) -Addthefollowingclauses:' test onsamplesofinner/outersheathshallbedonea t 27 '.10 FlameRetardanceTeston SingleCablesAfter the test,thereshouldbeno visible damages onthetestspecimenwithin300 nun fromitsupper mixing devices, Flame Retardance TestonSingleCablesAf1erburning bas ceased, the cables shouldbewiped clean and thecharredoraffected portion should not have reached a height exceeding m abovethebottomedgeoftheburner,measuredat tbe front and rear of tbe cable cateaoriesthatis, ,aDdCudescribedin ISl<l110(Pari62).

5 For thepurposeof thisstandard,categoryBand theabseDeeofIDyspecialrequirementsformet hodB,methodC shallbeused for boththecateloriesCland Test for HalogenAcidGas EvolutionThe for TemperatureIndexThemeasuredvalue oftemperatureindexshallbe21 at a temperature of250 '.(Page9, ) -Substitutetbefollowingclausefortheexist ing:' following special cables shallbeidentifiedbyindenting,embossingor printing theappropriate on the outer sheath throughout thecablelength, inadditionto tbeeXistingmarking requirements:TYIH:ofCcIblesImprovedfire performance forcategoryClImprovedfireperCormanceforc ategoryC2( Page10,AppendixA ) -Insertthe followingnew'Appendix A' andrenumberthe existing 'AppendixA)as'AppendixB):4 7098(PART1):1988 SPECIFICATIONFORCROSSLINKEDPOLYETHYLENEI NSULATEDPVCSHEATHEDCABLESPART 1 FOR WORKING VOLTAGES UP TO ANDINCLUDING 1100V( ,,)(Page7, ,col4( )] -Delete'UDderprepamtion'forcategoryCIand Test (a) underForTest [Page7, ,col4( )-Substitute'64'for'UDderconsideration'f orcategoryCl and Test(d)underForTestMethodRefer [Page7, ,col4(see also )]-Delete'Underpreparation'forCategoryC2 and Test (a) underForrest [Page7, ,col4(seealsoAmendment )]-Substitute'64'for'Underconsideration' forcategoryC2 and Test(g) (BT9)Repro.

6 ,.PhyUnit, 81S,NewDelhi,iRCIi& (pART1) :I'.SPECIFICATIONFORCROSSLINKEDPOLYETHYL ENEINSULATED PVCSHEATHEDCABLESPART1 FORWORKINGVOLTAGEUPTO ANDINCLUDING1 100 VOLTS(FIntllnlllo")[Page2, (b)]- Substitute 'Galvanizedsteelformed wire(strip),or'lor'Galvanizedsteelstrip, or' .(Page3, ,line1) -Substitute the following for the existingmatter:'Thegalvanizedroundsteelw ires/formedsteel wires (strips)usedforarmouringshallconformtoIS 397S:1999 .t(Page3,/00," *)-Substitutethefollowingfor theexisting:' (Page S, ,line2) -Insertthefollowingat the end:"ThetoleranceonnominaldimensionsshaD beas per IS397 ,forformedsteelwirescomplianceshallbeens uredonly fordimensions'A'&'C'."(Page S, ) The roundsteelwireslformedsteelwirestakenfro mthecable )The tensilestrengthof roundsteelwire/formedsteelwireshallbenot lessthan2S0N/mm2andDotmore580N/mm2 b)TheElongationatbreekofroundsteelwire/f ormedsteelwireshallbeDotlessthan6percent .

7 IS 7098(part1):1988c)Round steelwireshall meet therequirementsoftoniontest. Thegauge lengthbetweenVicesand the minimum numberofturnswithout break shallbeas per Table 6ofIS397 )The zinc coating shall not showanycracks and shall notflakeoff onrobbingby the bare fingerwhen the fonned steelwireis )Theuniformityofzinccoating of roundsteelwire/formedsteel wireshallcomply withtherequirementsofIS397S:1999subjectt othefollowing: Theminimumnumber ofdipsshallbereduced by onehalf-minutedip In caseofformedwires, diptest isapplicableonlyfor the )Themassof zinc coatingofroundsteelwireshall be not less than9 Spercent of the mass specifiedinTable 2ofIS 4826 ofzinc coatingofformed steel wire shallbenot less than95 percentofthemassspecifiedinIS397 )The resistivityof the round steel wire/formedsteel wire shall meet therequirementsofIS397S:1999.[Page7, ,51No.(b)] -Substitutethefollowing for theexisting matter:b)Tests for round steel wire/fonned steelwire (strip) annour:1) 36ofIS 7098 (Part I)IS 108102)Physicaltests onround/fonnedwire:i) Tensile (8)ofPart 37 ofIS 7098(Part1)IS 10810ii) (b)ofPart 37ofIS 7098(part1)IS 10810iii)Torsion test for round (c)ofPart 38 ofIS 7098 (Part 1)IS 10810iv) Windingtest for formed (d)ofPart 39 ofIS 7098 (Part 1)IS 108102 IS 7098(part1):1988v) Uniformityofzinc coating vi)Mass of zinc coatingvii) (e) ofPart 40 ofIS 7098 (Part 1)IS (f)ofPart41ofIS 7098 (Part 1) (g)ofPart42ofIS 7098 (Part 1)IS 10810(Page7,footnotemarlced:>-Substitute thefollowingfor theexisting:'~LowcarbonIalvanizedsteelwi res,formedwiresandtapesforarmouringofcab les-Specification.

8 '(ET09) CableDefinitionFRCablesinconstrainedarea sEnvironmentDescriptionCablesillopenarea sAPPENDIXA( , , , )CLASSIFICATIONOF retardent. Doesnotpropagatefireevenwheninstalleding roupsinverticalductsC2 CablesinconstrainedFR-LSHF lameretardentcableswithreducedareaswithl imitedhumanhalogenevolutionandsmokeactiv ityaod/orpresenceofsophisticatedsystemsC l01 Category(ETD09)ReproaraphyUnit,81S, NewDelhi,India5 IS :,.(PutI ) _IndianStandardSPECIFICATIONFORCROSSLINK EDPOLYETHYLENEINSULATEDPVCSHEATHEDCABLES PART 1 FORWORKINGVOLTAGES UP TO AND INCLUDING1100 VOLTS(FirstRevision) (Paa1I)( )wasadoptedbytheBureauofIndianStandardso n22 December1988, beenundertakentoalianitwiththeinternatio nalpracticesandtotakeintoaccounttileexpe riencepilledduringthispericdinthemanufac tureofthesetypesofcablein isdrawntothelimitationsoftheshortcircuit ~tiJlISofthetypesofcablecoveredbythissta ndardowinatotheabsenceorthemetallicsheat handthepossiblelossoftheelectricalcontac tbetweenthestrandsofthearmourwirea.

9 A 1 This standard (Part I)coverstherequirementsforbotharmouredan dunarmouredsingle,twin,three,fourandmum- corecrosslinkedpolyethylene(XLPE) standard aresuitable foruseonaesinglephaseorthreephase(earthe dorunearthed)systemsforratedvoltagesupto andiIlctuding1 100 de systemsrorratedvoltagesuptoandincluding1 SOOV to a~rfrequeacyvoltaIC10percenthiibm' ~ in thepreparationofthisstandard,assistarceh ashenderivedfromlEePublic:at;on~02(1983) 'Extrudedsoliddielectricinsulatedpowerca blesforratedvoltagefrom 1 kV to 30 kV', ,thefinalvalue, theresultofatest,shallber-oundedottin~or dancewithIS :2-1~.The numberofsipificantplacesretainedin theroundedoffvalueshouldbe the same roundinl offnumericalvalues(n~'ised). thisstandardaresuitablefor use ,forsuchcables,additionalrequirementshav ebeenincluded,wherever necessary( , ). These cables aresuitablefor use where com-binationofambienttemperatureandtempe ratureriseduetoloadresultsinconductortem peraturenotexceeding 90 followingdefinitions,inadditiontothosegi ven in IS : 1885(Part32) :Part32 Cables,conductorsandaccessoriesforelectr icitysupply IS : 7098 (ParII ) - 1988ethyle~econforming totherequirementsgivenin Table 1.

10 TABLE1 PROPERTIES OFXLPEINSULATION( ) andinnersheathshallbeofthefollowins:a)Vu lcanizedorunvulcanized rubber,orb) or ther-moplastic material used for inner sheath shall notbeharder than XLPE and PVC tobecom-patiblewiththetemperatureratings ofthe ,MinIx10"obm-cm,Min8S 2 C14daystrna/eml,MGXREQUIREMENT(3)12 5 N/mml,Min200percent,Min2OO 3 ,Max130 3 C1hour4percent,MtJx13S 3"C7days 2 Spercent,Max1:2 Spercent,MaxPROPERTYb)at90 C(2)i)Tensilestrengthii) )Aleinain air ovena)Treatment:TemperatureDurationb) Tensilestrengthvariationc)Elonptionvaria tioniv)Hotseta)Treatment:TemperatureTime underloadMechanicalstressb)Elonptionunde rloadc)PermanentcloDI_lion(set)aftercool inav)Shrinkagea)Treatment:TemperatureDur ationb)Shrinkagevi)Waterabsorption(gravi metric)a)Treatment:TemperatureDurationb) Waterabsorbedvii)Volumeresistivity:a) at27 CNOTk--Thesetestsarcof such anaturethataftertheyhavebeenmade,theynee dnotberepeatedunlesschanges are made in thecablematerialsordesign - Testsmadebythe manu-facturer onall finishedcable lengths to demons-tratethe integrity of ~peTest---Testsrequiredtobe madebeforesupplyonageneralcommercialbasi sonatypeof cable in order meet theintended,(I) - Testscarriedoutonsamplestaken from a Jot for the pu rpose of " tests tobecarriedout, between thepurchaserand System.