三相4线空开不接零线可以吗,三相电需要接零线吗

三相4线空开不接零线可以吗,三相电需要接零线吗

Youcanuseathree-phasefour-wireairswitchwithoutconnectingtheneutralwire.Youcanuse1.Single-phaseoneswithoutconnectingtheneutralwirewillnotwork.Three-phaseoneswithoutconnectingtheneutralwirearethesame. Whydoweneedtoconnecttheneutralwireftheloaddoesnotneedtheneutralwire（sutsasathree-posemotor）。 在理论上，ifthenutrineisnotConnected和threephasesareSareSareSareed，themofthrephesephasesabcis0，soitwillnottrip.however，intractice，Incractice，Itisimbossibleforthrephersibleforthreephasepherseptobereptoberparency，soitwilltrip。 ifthenutrallinedoesnotpassThroughTheLeakagesWitchandThereisasingle-强调，因此

isitokaytonotconnecttheThree-phaseFour-wireairswitchtozero？ hellodear，thethethethethethe-wirecirbuiterwillnottripifitdoesnotentertheneutralwire。 从理论上讲，ifthenlineisnotconconcontect，ifthreephasesareanced，theSumofthreephaseAbcis0，soitwillnottrip.however.however，Incractice，itisimposimimimimimimimimiposibletoachieveaChieveAChieveAchieveAtheTrueBalanceMemeNephaseNephase.ascanbeSeNbeSeenFromTheFomThefigigureThefigigure，然后 ，并通过threenttranstransformertogertogertogeththethethreelivewires并经过直通的毛细血管肌。 在非广播期间，threeliveWiresFlowIntothe

BythendSarenotConnectedTotheneutralwire：LeakageProtectiondoesnotworkandisequivalentToanordinare1pcircuiter。 OneendisNotConnectedTotheneutralwire：ifthelectricalapplianceising，立即进行。 Answer:Thesecondarysideofthecurrenttransformercannotbeopencircuit;whenwiring,theprimarysideofthetransformerisconnectedtoterminals1,4,and7oftheelectricenergymeter,andthesecondarysideisconnectedtoterminals3,6,and9oftheelectricenergymeter,andthenthesecondsideofthetransformerisconnected. SecondarySideSafetyGround。 端子2,5，和8ofthectricenergymeterareconnectedtotheabcthree-phaseIncIncominglineresleneres。

whatisthendangerofrunningthefour-phasecirbuiterforalonlonglonglywiththreywiththreyphenevewireandnottheneutralwire？ whenthree-losevirewireisdisconsteconthessnopoweronthine。 theDifferenceBetweenconnectIntralwireandnotnotnectingtheneutralWireis：whentheswitchisdisconted，theneeutralwireisalsodisconnected。 因为FansinairConditionersRequire220VWorkingWoltage。 Thefunctionoftheneutrallineistoprovidetheneutralpoint(starpoint)ontheloadsidewitha4squaremeterthree-phasefour-wirealuminumcore