I-Shaft current iyinkinga evamile futhi engagwemekihigh-voltage motorsfuthivariable-frequency motors. I-Shaft current ingabangela umonakalo omkhulu ohlelweni lokuthwala lwenjini. Ngenxa yalesi sizathu, abakhiqizi abaningi bezimoto bazosebenzisa amasistimu wokuthwala ama-insulating noma izindlela zokudlula ukugwema izinkinga zamanje ze-shaft.
I-Shaft current ikhiqizwa ngenxa yokuthi i-flux kazibuthe eshintsha ngokuhamba kwesikhathi idlula ku-loop eyakhiwe yi-motor shaft, ama-bearings kanye ne-bearing chamber, idonsa i-shaft voltage ku-shaft futhi ikhiqiza amandla lapho iluphu ivuliwe; i-low-voltage, i-high-current fenomenon ebonakalayo eyenza umonakalo omkhulu ohlelweni lokuthwala imoto futhi izobhubhisa ukuthwala ngenxa ye-electrocorrosion ngesikhathi esifushane.
I-motor core punching iyisiqephu esimise okwe-fan esine-slot ebekwe ngesisekelo ekubetheni; umgogodla wokuhlukanisa we-motor enkulu kanye ne-eccentricity ye-rotor yizici ezibalulekile esizukulwaneni se-shaft current. Ngakho-ke, i-shaft current ibe yinkinga enkulu yama-motor amakhulu.
Ukuze ugweme inkinga yamanje ye-shaft, izinyathelo ezidingekayo kufanele zithathwe ekukhethweni nasekuklanyeni izingxenye nezingxenye ukuze kuqedwe ngokwethiyori izici ezenza i-shaft current. Inombolo yamalunga S kumjikelezo ilawulwa futhi ilungiswe ubudlelwano phakathi kuka-S nesihlukanisi esivamile kakhulu esingu-t senani lamapheya e-motor pole.
Uma i-S/t iyinombolo elinganayo, asikho isimo sokukhiqiza i-voltage ye-shaft, futhi ngokwemvelo ngeke kube khona okwamanje ku-shaft; lapho i-S/t iyinombolo eyinqaba, kungenzeka ukuthi i-shaft voltage izokwenziwa, futhi i-shaft current izokwenziwa. Noma ngabe lolu hlobo lwemoto luyimoto yemvamisa yezimboni, kuzoba nezinkinga zamanje ze-shaft. Ngakho-ke, kumamotho amakhulu, izinyathelo zokugwema i-shaft current ngokuvamile zithathwa.
Ngaphezu kwalokho, ama-motor frequency motors nawo angesinye sezizathu zokukhiqiza i-shaft current ngenxa ye-harmonics yokuhleleka okuphezulu kokunikezwa kwamandla okuguquguqukayo. Kungakhathaliseki ukuthi inamandla kangakanani i-variable frequency motor, kungase kube khona i-shaft current. Ngakho-ke, abaningiama-motor ashintshashintshayo anamandla amancaneizosebenzisa ama-insulated bearings, kuyilapho ama-motor amaningi anamandla aphezulu azosebenzisa izembozo zokugcina ezivalekile, noma athathe izinyathelo zokuvikela endaweni yokuthwala shaft; abanye abakhiqizi, ukuze baqinisekise ukufana kwamamotho amafrikhwensi aguquguqukayo kanye nezingxenye zezimoto ezijwayelekile zasezimbonini, bazothatha izinyathelo zokudlula endaweni yekhava yokuthwala.