CT 接反РP=UaIaCOSΦa+ UbIbCOS(180°-Φb)+ OS(180°-Φc)РC、A相CT 接反РP=UaIaCOS(180°-Φa)+ UbIbCOSΦb+ OS(180°-Φc)Р3Р3CT接反РP=UaIaCOS(180°-Φa)+ UbIbCOS(180°-Φb)+Р-1Р电度表反转Р OS(180°-Φc)Р4Р两元件电压、电流不同相РB、C相电压、电流不同相РP=UaIaCOSΦa + OS(120°+Φc)+ UcIbCOS(120°-Φb)Р0Р Р电度表不转РA、C相电压、电流不同相РP=OS(120°-Φc )+ UbIbCOSΦb+ UcIaCOS(120°+Φa)Р РB、A相电压、电流不同相РP=OSΦc+ UaIbCOS(120°+Φb)+ UbIaCOS(120°-Φa)Р5Р三元件电流电压均不同相Р接法为:РUaIb UbIc UcIaРP=UaIbCOS(120°+Φb)+ OS(120°+Φc)+ РUcIaCOS(120°+Φa)Р-1/(1/2+ tanΦ*/2)Р电度表反转Р接法为:РUaIc UbIa UbIaРP=OS(120°-Φc)+ UbIaCOS(120°-Φa)+РUbIaCOS(120°-Φb)Р Р1/(-1/2+ tanΦ*/2)Р当0°<Φ<30°时,电度表反转,当Φ=30°时,电度表不转,当Φ>30°时,电度表正转,转速较慢Р6Р一相Р电压Р断线РA相断线РP=UbIbCOSΦb+ OSΦcР2/3Р电度表转慢РB相断线РP=UaIaCOSΦa+ OSΦcРC相断线РP=UbIbCOSΦb+ UaIaCOSΦaР7Р两相Р电压Р断线РA、B相断线РP=OSΦcР1/3Р电度表明显转慢РB、C相断线РP=UaIaCOSΦaРC、A相断线РP= UbIbCOSΦbР8Р三相电压断线Р0
全文预览
