1、BRITISH STANDARD BS EN 13763-21:2003 Explosives for civil uses Detonators and relays Part 21: Determination of flash-over voltage of electric detonators The European Standard EN 13763-21:2003 has the status of a British Standard ICS 71.100.30 BS EN 13763-21:2003 This British Standard, was published
2、under the authority of the Standards Policy and Strategy Committee on 12 January 2004 BSI 12 January 2004 ISBN 0 580 43225 4 National foreword This British Standard is the official English language version of EN 13763-21:2003. The UK participation in its preparation was entrusted to Technical Commit
3、tee CII/61, Explosives for civil uses, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be
4、 found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are
5、responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and k
6、eep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 9 and a back cover. The BSI copyright notice displayed in this document i
7、ndicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN1376321 December2003 ICS71.100.30 Englishversion ExplosivesforcivilusesDetonatorsandrelaysPart21: Determinationofflashovervoltageofelectricdetonators
8、 ExplosifsusagecivilDtonateursetrelaisPartie21: Dterminationdelatensiondeclaquagedesdtonateurs lectriques ExplosivstoffefrzivileZweckeZnderund VerzgerungselementeTeil21:Bestimmungder berschlagsspannungelektrischerZnder ThisEuropeanStandardwasapprovedbyCENon10November2003. CENmembersareboundtocomplyw
9、iththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStanda
10、rdexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denm
11、ark,Finland,France,Germany,Greece, Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Slovakia,Spain,Sweden,SwitzerlandandUn ited Kingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussel
12、s 2003CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN1376321:2003EEN1376321:2003(E) 2 Contents page Foreword3 Introduction .5 1 Scope 6 2 Normativereferences 6 3 Termsanddefinitions. .6 4 Testpieces. .6 5 Apparatus .6 6 Procedure .6 7 Testreport .
13、.7 AnnexA (informative) Rangeofapplicabilityofthetestmethods.8 AnnexZA (informative) ClausesofthisEuropeanStandardaddressingessentialrequirementsorother provisionsofEUDirectives 9EN1376321:2003(E) 3 Foreword Thisdocument(EN1376321:2003)hasbeenpreparedbyTechnicalCommitteeCEN/TC321“Explosivesforcivil
14、uses“,thesecretariatofwhichisheldbyAENOR. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidenticaltextor byendorsement,atthelatestbyJune2004,andconflictingnationalstandardsshallbewithdrawnatthelatestby June2004. ThisdocumenthasbeenpreparedunderamandategiventoCENb
15、ytheEuropeanCommissionandtheEuropean FreeTradeAssociation,andsupportsessentialrequirementsofEUDirective(s). ForrelationshipwithEUDirective(s),seeinformativeannexZA,whichisanintegralpartofthisdocument. AnnexAisinformative. ThisEuropeanStandardisoneofaseriesofstandardswiththegenerictitle Explosivesfor
16、civilusesDetonators andrelays. Theotherpartsofthisseriesarelistedbelow: prEN137631 Part1:Requirements EN137632 Part2:Determinationofthermalstability EN137633 Part3:Determinationofsensitivenesstoimpact EN137634 Part4:Determinationofresistancetoabrasionofleadingwiresandshocktubes EN137635 Part5:Determ
17、inationofresistancetocuttingdamageofleadingwiresandshocktubes EN137636 Part6:Determinationofresistancetocrackinginlowtemperaturesofleadingwires EN137637 Part7:Determinationofthemechanicalstrengthofleadingwires,shocktubes,connections, crimpsandclosures EN137638 Part8:Determinationoftheresistancetovib
18、rationofplaindetonators EN137639 Part9:Determinationofresistancetobendingofdetonators EN1376311 Part11:Determinationofresistancetodamagebydroppingofdetonatorsandrelays EN1376312 Part12:Determinationofresistancetohydrostaticpressure prEN1376313 Part13:Determinationofresistanceofelectricdetonatorsagai
19、nstelectrostaticdischarge prEN1376315 Part15:Determinationofequivalentinitiatingcapability EN1376316 Part16:Determinationofdelayaccuracy EN1376317 Part17:Determinationofnofirecurrentofelectricdetonators EN1376318 Part18:Determinationofseriesfiringcurrentofelectricdetonators EN1376319 Part19:Determin
20、ationoffiringimpulseofelectricdetonatorsEN1376321:2003(E) 4 EN1376320 Part20:Determinationoftotalelectricalresistanceofelectricdetonators EN1376322 Part22:Determinationofcapacitance,insulationresistanceandinsulationbreakdownofleading wires EN1376323 Part23:Determinationoftheshockwavevelocityofshockt
21、ube EN1376324 Part24:Determinationoftheelectricalnonconductivityofshocktube prEN 1376325 Part25:Determinationoftransfercapabilityofsurfaceconnectors,relaysandcoupling accessories prEN1376326 Part26:Definitions,methodsandrequirementsfordevicesandaccessoriesforreliableandsafe functionofdetonatorsandre
22、lays CEN/TS1376327 Part27:Definitions,methodsandrequirementsforelectronicinitiationsystems AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,CzechRepublic,Denmark,Finland, France,Germany,Greec
23、e,Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal, Slovakia,Spain,Sweden,SwitzerlandandtheUnitedKingdom.EN1376321:2003(E) 5 Introduction Whenblastingworkisperformedwithelectricdetonators,theyareusuallyconnectedinseries.Dependingonthe numberofdetonatorsusedinafiringround,th
24、eirelectricalresistance,theamountofenergyneededtoignitethe fuseheadsandtheresistanceoftheconnectedshotfiringcable,itisusuallynecessarytoapplyvoltagesofseveral hundredvolts,oftenexceeding1kV,tothecircuittoensurecorrectinitiation. Detonatorscanalsobesubjectedtotheapplicationofhighvoltagescausedbyelect
25、rostaticchargingofthefiring circuit. Todeterminetheabilityofdetonatorstowithstandtheseappliedhighvoltageswithoutmisfiringorinitiating prematurely,itisessentialtodeterminethevalueofappliedd.c.voltagewhichcausesflashoverbetweenthe detonatorleadingwiresandthedetonatorshell.EN1376321:2003(E) 6 1Scope Th
26、isEuropeanStandardspecifiesamethodofdeterminingtheflashovervoltageofelectricdetonators. 2 Normativereferences ThisEuropeanStandardincorporatesbydatedorundatedreference,provisionsfromotherpublications.These normativereferencesarecitedattheappropriateplacesinthetext,andthepublicationsarelistedhereafte
27、r.For datedreferences,subsequentamendmentstoorrevisionsofanyofthesepublicationsapplytothisEuropean Standardonlywhenincorporatedinitbyamendmentorrevision.Forundatedreferencesthelatesteditionofthe publicationreferredtoapplies(includingamendments). EN138571, ExplosivesforcivilusesPart1:Terminology. ENI
28、SO/IEC17025,Generalrequirementsforthecompetenceoftestingandcalibrationlaboratories(ISO/IEC 17025:1999). 3 Termsanddefinitions ForthepurposesofthisEuropeanStandard,thetermsanddefinitionsgiveninEN138571apply. 4 Testpieces Select30detonatorsofeachspecifictype,havingthesamedesignandchemicalcompositionof
29、fusehead,primary charge,andsecondarycharge.Ifthedetonatorsformpartofaserieswithdifferentdelaytimes,select30 detonatorswithdelaytimesasevenlydistributedthroughouttheseriesaspossible. 5Apparatus 5.1 Ahighvoltagesource, capableofapplyingad.c.voltageofupto10kVwithanaccuracyof 50Vand notmorethan3,0%disto
30、rtion.Thevoltageshallbecontinuouslyadjustable.Thecurrentoutputofthisvoltage sourceshallbelimitedtoamaximumof5mAtopreventthebuildupofanelectricarc. 5.2 Anammeter, todetectavoltageflashover. 6Procedure 6.1 Connectthedetonatorshelltooneterminalofthevoltagesource. Shortcircuitbothleadingwiresofthedetona
31、torandconnectthemtothesecondterminal. Increasethevoltagecontinuouslyataratebetween50V/sand200V/suntilaflashoverisdetectedbyasudden increaseinthecircuitcurrent.Recordthevoltageatwhichtheflashoveroccurs. 6.2 Repeattheproceduredescribedin6.1foreachoftheremainingdetonators. Calculatethemeanvalueandthest
32、andarddeviationoftheflashovervoltage. Calculatethesumofthemeanvalueand2,33timesthestandarddeviation(uppervalue)andthesumofthemean valueand2,33timesthestandarddeviation(lowervalue).EN1376321:2003(E) 7 7 Testreport ThetestreportshallconformtoENISO/IEC17025.Inadditionthefollowinginformationshallbegiven
33、: a) themeanvalueoftheflashovervoltage,thestandarddeviation,theuppervalueandthelowervalue; b) numberofdetonatorsinitiatedbytheflashover.EN1376321:2003(E) 8 Annex A (informative) Rangeofapplicabilityofthetestmethods Rangeofapplicabilityofthetestmethod:30Cto+80C.EN1376321:2003(E) 9 Annex ZA (informati
34、ve) ClausesofthisEuropeanStandardaddressingessentialrequirementsor otherprovisionsofEUDirectives ThisdocumenthasbeenpreparedunderamandategiventoCENbytheEuropeanCommissionandtheEuropean FreeTradeAssociationandsupportsessentialrequirementsofEUDirective93/15/EEC. Compliancewiththeclausesofthisstandardp
35、rovidesonemeansofconformingwiththespecificessential requirementsoftheDirectivesconcernedandassociatedEFTAregulations. WARNING:OtherrequirementsandotherEUDirectivesmaybeapplicabletotheproduct(s)fallingwithinthe scopeofthisstandard. TheclausesofthisdocumentarelikelytosupportrequirementsI.1andII.1(i)of
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