Ingabe ukupenda ngesifutho kungaxazulula inkinga yokujikeleza okufushane phakathi kokujika kwama-motor windings?

I-inter-turn short circuit yiphutha likagesi elingenzeka ngesikhathi sokukhiqizwa, ukucutshungulwa kanye nokusetshenziswa kwanoma iyiphi i-injiniUkugoqa. Uma kwenzeka iphutha le-inter-turn short circuit, lingalungiswa yini futhi yiziphi izinyathelo okufanele zithathwe?

Ukugoqa nokushumeka kwama-motor windings kungaba nemiphumela emibi kungqimba lokufakelwa kwezintambo zikagesi. Kungakhathaliseki ukuthi ucingo lukagesi olufakwe i-enamel noma ucingo olugoqwe ngentambo ye-mica olusetshenziswa ekwakheni ama-windings, kunzima ukugwema izinkinga ezinjalo. Inqubo yokubumba yokubopha okubunjiwe nayo inomthelela omkhulu kwikhwalithi yengqimba yokufakelwa kwezintambo zikagesi. Uma isikhunta singafanele futhi ukwakheka kwesimo sokugoqa kungafaneleki, kuzoholela ezinkingeni ezinkulu zokulimala kokufakelwa ngesikhathi senqubo yokubumba, okuyingozi engaba khona yekhwalithi yezinkinga ze-inter-turn short circuit.

Uma kuvela izinkinga ezifanayo ekugoqeni ngaphambi kokucwilisa upende, izinyathelo zokulungisa ezidingekayo zokufaka ugesi zingathathwa ukuze kuhlukaniswe futhi kuvikelwe izintambo zikagesi eziwonakele; ngesikhathi senqubo yokwelapha ukufakwa kogesi okugoqekile, upende wokufaka ugesi ungadlala indima ethile ekuqiniseni ukufakwa kogesi phakathi kokujika. Kuvela ukuthi Ukusebenza kokufaka ugesi kwentambo kagesi elimele kungahlangabezana ngokugcwele nezidingo zokusebenza kokufaka ugesi kwemoto; noma kunjalo, uma umphumela wokufaka ugesi ungacacile kakhulu, kuzoholela ekuhlulekeni kwekhwalithi kagesi ngesikhathi sokusebenza kwemoto, okungukuthi, izinkinga zesekethe elifushane phakathi kokujika ngesikhathi sokusebenza.

Uma kuqhathaniswa, inkinga ye-inter-turn short circuit eyenzeka ekujikeni ngaphambi kokuba imoto isebenze itholakala kakhulu nge-inter-turn insulation tester, futhi kusenethuba lokuthatha izinyathelo zokulungisa ezisebenzayo; lapho i-winding short circuit yenzeka ngesikhathi sokuhlolwa komshini okuphelele noma ukusebenza kwenjini ngaphandle kokulungiswa okukhulu.

Uma kwenzeka iphutha le-inter-turn short circuit ngesikhathi sokusebenza kwemoto, iphutha libonakala njengenkinga yokufakelwa kwama-multi-turn, futhi amanye aze athinte ngisho ne-coil yonke. Imiphumela emibi kakhulu izoba ku-insulation ye-phase-to-phase kanye ne-ground insulation. Okusho ukuthi, iphutha le-inter-turn short circuit linemiphumela emikhulu ephumayo, futhi izinga le-inter-turn fault lizoba likhulu kakhulu. Ingqimba yokufakelwa kwentambo kagesi cishe isesimweni sokuqhekeka, ngakho-ke yonke i-winding kumele ishintshwe.

Ngakho-ke, abakhiqizi abaningi bezimoto babheka ubuchwepheshe bokucubungula ama-winding bubaluleke kakhulu, bazama konke okusemandleni abo ukunciphisa nokususa izingozi ezifihliwe zamaphutha okushisa, futhi bathuthukise kakhulu izinga lokusebenza kukagesi kwemoto.