YINTONI IMISEBENZI YESITSHINTSHI SOMTHWALO WE-VOLTAGE HEAD?

Iswitshi yomthwalo we-high-voltage sisixhobo sombane esidibeneyo esine-high-voltage, esiqulathe iswitshi yokwahlukanisa, i-fuse, i-thermal relay, i-shunt release kunye nesixhobo sokucima i-arc.

Iswitshi yomthwalo we-high-voltage inesixhobo esilula sokucima i-arc, esinokusetyenziselwa kuphela ukwenza nokuphula umbane oqhelekileyo womthwalo, kwaye asinakusetyenziselwa ukuphula umbane we-short-circuit. Ke ngoko, iswitshi yomthwalo we-high-voltage idla ngokufaniswa ne-fuse ye-high-voltage kunye nokukhululwa kobushushu, kwaye i-fuse isetyenziselwa ukusika umbane we-short-circuit ngexesha le-short-circuit. Kwimeko yokugqithisa kakhulu, ukukhululwa kobushushu kusebenza ngokuziphazamisa ngokuzenzekelayo iswitshi yomthwalo. Ekubeni kukho umsantsa ocacileyo xa iswitshi yomthwalo inqanyuliwe, ikwanomsebenzi wokwahlula umbane ukuqinisekisa ukugcinwa okukhuselekileyo.

Iswitshi yomthwalo ophezulu kunye nezixhobo zombane ezidibeneyo zifanelekile kwinkqubo yamandla ye-AC ye-10 kV yesigaba esithathu, i-50 Hz, okanye zisetyenziswa kunye neeseti ezipheleleyo zezixhobo zokusasaza umbane, iikhabhathi zokutshintsha inethiwekhi yeringi, izitishi ezidibeneyo, njl.njl., kwaye zisetyenziswa kakhulu kwiiprojekthi zokwakha nokuhlaziya inethiwekhi yendawo, amashishini emizi-mveliso kunye nemigodi, izakhiwo eziphakamileyo kunye nezibonelelo zikawonke-wonke, njl.njl., zingasetyenziswa njengombane wenethiwekhi yeringi okanye isiphelo, kwaye zidlala indima yokusasaza umbane, ulawulo kunye nokukhusela. Zineengenelo zomthamo omkhulu wokuqhekeka, ukhuseleko kunye nokuthembeka, ubomi obude bombane, ukusebenza rhoqo, isakhiwo esincinci, ubungakanani obuncinci, ubunzima obulula, kwaye ngokusisiseko akukho londolozo. Ngombane olinganiselweyo wokuqhekeka, umbane ogqithisileyo. Ingaphula umbane wesekethe emfutshane kwaye ithintele ukusebenza kwezixhobo ekuswelekeni kwesigaba. Iswitshi inokwaphuka okucacileyo kokuzihlukanisa. Ixhotyiswe ngenkqubo yentwasahlobo yombane yeswitshi yokumisa umhlaba enokukwazi ukuvala, enokulawulwa kude.

Iswitshi yomthwalo (QL) sisitshitshi esizinikele ekwenzeni nasekuphuleni imisinga yomthwalo. Iswitshi yomthwalo ene-high-voltage inesixhobo esilula sokucima i-arc kunye nendawo yokuqhawula ecacileyo, enokuvula nokuvala umsinga womthwalo kunye nokugqithisa umsinga, kwaye inomsebenzi weswitshi yokwahlukanisa, kodwa ayinakuyikhupha umsinga we-short-circuit. Kwiimeko ezininzi, ifektri yeswitshi yomthwalo isetyenziswa kunye neefusi ukusika umsinga we-fault ngoncedo lweefusi, ezingasetyenziswa kakhulu ekwakhiweni kwakhona kwegridi yamandla yasezidolophini nasemaphandleni. Isetyenziswa kakhulu kwigridi yamandla ye-6~10kV.

Ngokwendlela yokucima i-arc, iswitshi yomthwalo we-high-voltage yahlulwe ngokubanzi ngohlobo lwemveliso yegesi, uhlobo lwegesi ecinezelweyo, uhlobo lwe-vacuum kunye nohlobo lwe-SF6. Ngokwendawo yokufakela, yahlulwe yangamacandelo amabini: uhlobo lwangaphakathi nohlobo lwangaphandle.

Iswitshi yomthwalo ilula ngesakhiwo, incinci ngobukhulu kwaye ixabiso layo liphantsi, kwaye ifanelekile kwiimeko ezingadingi oyile, ezingagcinwanga kakuhle, kunye nokusebenza rhoqo. Xa idityaniswe neefusi, ingasetyenziswa njengeswitshi yamandla kubasebenzisi abanomthamo omncinci okanye ongabalulekanga wokutshintsha ii-circuit breakers. Iswitshi yomthwalo ikhethwa ngokwevolthi elinganisiweyo kunye nomsinga olinganisiweyo, kwaye ijongwa ukuba icinezelwe okanye izinzile na kubushushu. Xa ixhotyiswe ngefusi, umthamo wokuqhekeka kwefusi kufuneka uqinisekiswe, kwaye ukuzinza kwayo okunamandla kunye nobushushu akunakuqinisekiswa.