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1、305GUIDEFAPPLICATIONOFIEC62271100IEC622711GUIDEFAPPLICATIONOFIEC62271100IEC622711PART2MAKINGBREAKINGTESTSPART2MAKINGBREAKINGTESTSWkingGroupA3.11October2006–2–CONTENTS1Miscellaneousprovisionsfbreakingtests................

2、.....................................................91.1Pressuretobeusedduringdemonstrationoftheratedoperatingsequenceduringshtcircuittypetests............................................................................

3、.....91.1.1Background...............................................................................................91.1.2Recommendation....................................................................................

4、.102Ratedtestfrequency..............................................................................................112.1General............................................................................................

5、...................112.2Basicconsiderations............................................................................................122.2.1Temperaturerisetests..........................................................

6、...................122.2.2Shttimewithstcurrentpeakwithstcurrenttests..................122.2.3Shtcircuitmakingcurrent.....................................................................122.2.4TerminalFaults..............

7、..........................................................................122.2.5Shtlinefault.........................................................................................132.2.6Capacitivecurrentswitching.....

8、................................................................132.3Applicabilityoftypetestsatdifferentfrequencies.................................................132.3.1Temperaturerisetests.............................

9、................................................132.3.2Shttimewithstcurrentpeakwithstcurrenttests..................132.3.3Shtcircuitmakingcurrenttest...............................................................142.3.4T

10、erminalfaults.........................................................................................142.3.5Shtlinefault.........................................................................................142.3.6Cap

11、acitivecurrentswitching.....................................................................143Terminalfaults.............................................................................................................16

12、3.1Introduction.........................................................................................................163.2Demonstrationofarcingtime......................................................................

13、.........173.3Demonstrationofthearcingtimefthreephasetests.........................................203.4Powerfrequencyrecoveryvoltagetheionofthefirstpoletoclearfacts101315.................................................

14、.......................................203.4.1Introduction..............................................................................................203.4.2Equationsfthefirstsecondthirdpoletoclearfacts................

15、....213.4.3Stardisedvaluesfthesecondthirdpoletoclearfacts..........223.4.4Combinationtestsfkpp=1315....................................................233.5acteristicsofrecoveryvoltage....................................

16、..................................233.5.1Valuesofrateofriseofrecoveryvoltagetimedelays.........................233.5.2Amplitudefacts.....................................................................................243

17、.6Therequirementsfperfmingsinglephasetestsinsubstitutionfthreephaseconditions.................................................................................................243.7Procedureftestingtheotherclearingpolesofa

18、threephasetestdutybytheseparationofthetestdutieswithinatestseriestakingintoaccounttheassociatedTRVfeachpoletoclear..................................................................253.8Suitabilityofaparticularshtcircuitc

19、urrentratedcircuitbreakerfuseatanapplicationwithalowershtcircuitrequirement.............................................273.9BasisfthecurrentTRVvaluesofthebasicshtcircuittestdutyT10.........283.10References..............

20、............................................................................................293.11Bibliography........................................................................................................294Ini

21、tialtransientrecoveryvoltage(ITRV)........................................................................304.1General......................................................................................................

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