ul745-2-5_1995-03_circular saws

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1、Fehler!Textmarkenichtdefiniert.ParticularRequirementsforCircularSawsandCircularKnivesMarch23,1995March23,1995CSA-C22.2No.745-2-5tUL745-2-53ContentsPreface5Foreword(CSA)7Foreword(UL)91.Scope112.Definition113.Generalrequirement114.Generalnotesontests115.Rating116.Classification117.Marking128.Protecti

2、onagainstelectricshock129.Starting1210.Inputandcurrent1211.Heating1212.Leakagecurrent1213.Radioandtelevisioninterferencesuppression1314.Moistureresistance1315.Insulationresistanceandelectricstrength1316.Endurance1317.Abnormaloperation1318.Mechanicalhazards1319.Mechanicalstrength1520.Construction152

3、1.Internalwiring1522.Components154CSA-C22.2No.745-2-5tUL745-2-5March23,199523.Supplyconnectionandexternalflexiblecablesandcords1524.Terminalsforexternalconductors1525.Provisionforearthing1526.Screwsandconnections1527.Creepagedistances,clearancesanddistancesthroughinsulation1628.Resistancetoheat,fir

4、eandtracking1629.Resistancetorusting1630.TestsbyManufacturers1631.Instructions16AppendixA—Thermalcut-outsandoverloadreleases19AppendixB—Electroniccircuits19AppendixC—Constructionofsafetyisolatingtransformers19AppendixD—Measurementofcreepagedistancesandclearances19AppendixE—Referencestandards19Appen

5、dixF—Attachmentsandaccessories19AppendixG—Sequenceoftests19AppendixH—Translations20Figures23March23,1995CSA-C22.2No.745-2-5tUL745-2-5111.ScopeThisclauseofPart1isapplicableexceptasfollows:1.1Fehler!Textmarkenichtdefiniert.FirstsentenceReplacement:Thisstandardappliestohand-heldelectricmotor-operatedc

6、ircularsawsandcircularknives.2.DefinitionThisclauseofPart1isapplicableexceptasfollows:2.2.23Fehler!Textmarkenichtdefiniert.Replacement:Normalloaddenotestheloadobtainedwhenthetoolisoperatedcontinuouslywiththebladeintheverticalposition,theloadbeingsuchthattheinput,inwatts,isequalto:0.25s謓0fora.c.saws

7、withasynchronousinductionmotors,0.2s謓0forothersawsdesignedforcuttingdepthsexceeding55mm,0.13s謓0forothersawsdesignedforcuttingdepthsnotexceeding55mm,forcircularknivesandformulti-purposetoolswhichcanbefittedw