YINI IMISEBENZI YE-HIGH VOTAGE LOAD SWITCH?

Iswishi yomthwalo we-high-voltage iyithuluzi likagesi elihlanganisiwe le-high-voltage, eliqukethe iswishi yokuhlukanisa, i-fuse, i-thermal relay, i-shunt release kanye nedivayisi yokucisha i-arc.

Iswishi yomthwalo we-high-voltage inedivayisi elula yokucisha i-arc, engasetshenziswa kuphela ukwenza nokuphula ugesi ojwayelekile womthwalo, futhi ayikwazi ukusetshenziselwa ukuphula ugesi we-short-circuit. Ngakho-ke, iswishi yomthwalo we-high-voltage ivame ukufaniswa ne-fuse ye-high-voltage kanye nokukhishwa kokushisa, futhi i-fuse isetshenziselwa ukusika ugesi we-short-circuit ngesikhathi se-short-circuit. Uma kwenzeka ukulayisha ngokweqile, ukukhishwa kokushisa kusebenza ukukhubeka ngokuzenzakalelayo kushintshi womthwalo. Njengoba kukhona igebe elisobala lapho iswishi yomthwalo inqanyuliwe, inomsebenzi wokuhlukanisa ugesi ukuqinisekisa ukulungiswa okuphephile.

Iswishi yomthwalo we-high-voltage kanye nezinto zikagesi ezihlanganisiwe zifanelekela uhlelo lwamandla lwe-AC olunezigaba ezintathu lwe-10 kV, 50 Hz, noma zisetshenziswa kanye namasethi aphelele emishini yokusabalalisa ugesi, amakhabethe okushintsha inethiwekhi yendandatho, iziteshi ezincane ezihlanganisiwe, njll., futhi zisetshenziswa kabanzi kumaphrojekthi okwakha nokuvuselela inethiwekhi yendawo, amabhizinisi ezimboni kanye nezimayini, izakhiwo eziphakeme kanye nezindawo zomphakathi, njll., zingasetshenziswa njengokunikezwa kwamandla noma i-terminal yenethiwekhi yendandatho, futhi zidlala indima yokusabalalisa ugesi, ukulawula nokuvikela. Inezinzuzo zomthamo omkhulu wokuphuka, ukuphepha nokuthembeka, impilo kagesi ende, ukusebenza njalo, isakhiwo esiqinile, usayizi omncane, isisindo esincane, futhi ngokuyisisekelo akukho ukulungiswa. Ngomshini wamandla ophukile, ukulayisha ngokweqile. Ingaphula ugesi we-short-circuit futhi ivimbele ukusebenza kwemishini ekushodeni kwesigaba. Iswishi inokuphazamiseka okusobala kokuhlukaniswa. Ifakwe indlela yomshini wentwasahlobo kagesi weswishi yokumisa enekhono lokuvala, elingalawulwa kude.

Iswishi yomthwalo (QL) iyiswishi enikezelwe ekwenzeni nasekuphuleni imisinga yomthwalo. Iswishi yomthwalo ene-voltage ephezulu inedivayisi elula yokucisha i-arc kanye nendawo yokunqamula esobala, engavula futhi ivale umusi womthwalo futhi ilayishe ngokweqile umusi, futhi inomsebenzi weswishi yokuzihlukanisa, kodwa ayikwazi ukuxhuma umusi we-short-circuit. Ezimweni eziningi, ifektri yeswishi yomthwalo isetshenziswa kanye nama-fuse ukusika umusi wephutha ngosizo lwama-fuse, angasetshenziswa kabanzi ekwakhiweni kabusha kwegridi yamandla yasemadolobheni nasemakhaya. Isetshenziswa kakhulu kwigridi yamandla engu-6~10kV.

Ngokwe-arc extinguishing medium, i-high-voltage load switch ihlukaniswe kakhulu ngohlobo lokukhiqiza igesi, uhlobo lwegesi olucindezelwe, uhlobo lwe-vacuum kanye nohlobo lwe-SF6. Ngokwendawo yokufaka, ihlukaniswe ngezigaba ezimbili: uhlobo lwangaphakathi nohlobo lwangaphandle.

Iswishi yomthwalo ilula ngesakhiwo, incane ngobukhulu futhi intengo yayo iphansi, futhi ifaneleka ngezikhathi ezingadingi uwoyela, ezingadingi ukulungiswa, kanye nokusebenza njalo. Uma ihlanganiswa nama-fuse, ingasetshenziswa njengeswishi yamandla kubasebenzisi abanekhono elincane noma elingabalulekile lokushintsha ama-circuit breaker. Iswishi yomthwalo ikhethwa ngokuya nge-voltage elinganisiwe kanye nomthamo olinganisiwe, futhi ihlolwe ukuthi icindezelwe yini futhi izinzile yini ekushiseni. Uma ifakwe i-fuse, amandla okuphuka kwe-fuse kufanele aqinisekiswe, futhi ukuzinza kwayo okuguquguqukayo nokushisa kungenzeka kungaqinisekiswa.