中压产品型式试验总结及比较

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1、1.dielectrictestlfunctiona.power-frequencyvoltagetestVerifytheswitchwithstandtheexternalinsulationtest.Externalinsulation:distancesinatmosphereandsurfacesincontactinwithopenairofsolidinsulationoftheequipmentwhicharesubjecttodielectricstressesandtotheeffectsofatmosphericandoth

2、erexternalconditionsuchaspollution,humidity,vermin,etc.b.lightningimpulsevoltagetestVerifytheswitchwithstandlightningtest.Lightning:thetestsshallbeperformedwithvoltagesofbothpolaritiesusingthestandardlightningimpulse1.2/50usaccordingtoIEC60060-1inthelaboratory.c.artificalpoll

3、utiontestforoutdoorinsulatorsWhenthecreepagedistancesdonotcomplywiththerequirementofIEC60815,thistestshouldbeperformedaccordingtoIEC60507.d.partialdischargetestswhentherelevantproductrequirethistest,andthenitwillperformedaccordingtoIEC60270.theproductsuchasbushingetc.lrelatio

4、nshipRoutinetestMandatorydothedielectrictestafterthefollowingtest:a.short-circuitcurrentmaking/breakingtestb.short-timewithstandcurrentandpeakwithstandcurrenttestc.mechanical/electricalendurancetest2.measurementoftheresistanceofcircuitslFunctionVerifythemaincircuitresistance,

5、thenconfirmthemaincircuitsituation.lRelationshipMeasureoftheresistanceofmaincircuitatthefront/backofthetemperature-risetest,andcomparethetwovalues,gaintheresult.Note:increaseofthemaincircuitresistancecan’talonebeconsideredasreliableevidenceofbadcontactorconnections.3.temperat

6、ure-risetestltestconditiononanewswitchlfunctionverifythecontactandtheconnectionquality,ortheequipmentworkwillnotexceedthespecifiedvaluesavoiddamage.lRelationshipMeasureoftheresistanceofmaincircuitatthefront/backofthetemperature-risetest,andcomparethetwovalues,gaintheresult.1.

7、short-timewithstandcurrentandpeakwithstandcurrenttestltestconditiona.newoperationdevice(don’toperatewithload)b.contactscleanandinclosedpositionc.beprecededbymeasurementofthemainresistanced.smallvoltage,short-circuitcurrent,thefluenttimealwaysis4slfunctiona.thistesttoprovethei

8、rabilitytocarrytheratedpeakwithstandcurrentandtheratedshort-timewith