Ukususela kwiminyaka yee-1990, ilizwe lam liye lazisa i-American box-type substation, kunye nesakhiwo sokutshintsha komthwalo, i-ring network switch kunye ne-fuse yenziwe lula kwi-oyile ye-transformer kwaye ifakwe kwioli.Umbambeli kwakhona wamkela i-oyile-i-zinc oxide arrester.I-transformer ikhansela umqamelo weoli, kwaye itanki ye-fuel kunye ne-radiator ibonakaliswe emoyeni.Olu hlobo lotshintsho lwebhokisi lubizwa ngokuba yi-American box change, efaniswa nebhokisi ejinga ecaleni kwe-transformer.Ngokumalunga nomthamo, i-European-style-style-type transformers inkulu ngenxa yokufakelwa kwangaphakathi kweekhabhinethi zokutshintsha eziqhelekileyo kunye nabaguquli.I-American box-type transformer inomthamo omncinci ngenxa yokufakwa okudibeneyo.Ngokumalunga nokukhusela, i-high-voltage side ye-transformer yebhokisi yaseYurophu ikhuselwe ngokutshintshwa komthwalo kunye ne-fuse yokunciphisa yangoku.Xa i-fuse yesigaba esisodwa ivuthelwa, sebenzisa umqhubi we-fuse ukuvula ukutshintshwa komthwalo wesigaba sesithathu ngexesha elifanayo ukuphepha ukusebenza kokulahleka kwesigaba, kwaye ukutshintshwa komthwalo kuyadingeka ukuba ube nokukwazi ukunqumla kunye nokudlulisa okwangoku.Icala eliphantsi kwe-voltage likhuselwe ngokutshintsha komthwalo kunye ne-fuse yokunciphisa yangoku, kunye necala eliphezulu le-voltage ye-American box transformer ikhuselwe yi-fuse, ngelixa ukutshintshwa komthwalo kunomsebenzi wokutshintsha kunye nokunqumla phezulu. -i-voltage yomthwalo wangoku, kwaye umthamo uncinci.Xa ifyuzi yesigaba kwicala le-high-voltage ivuthelwa, i-voltage kwicala eliphantsi-voltage iya kuncipha, kwaye ukhuseleko olungaphantsi kwe-voltage okanye ukhuseleko lwangoku lwecala leplastiki oluzenzekelayo lokutshintsha umoya luya kusebenza, kunye nokusebenza kwe-voltage ephantsi. ayiyi kwenzeka.Ngokombono weendleko zemveliso, iindleko zeebhokisi zesitayela saseYurophu ziphezulu.Ngokombono wendawo yokunciphisa ixabiso lemveliso, kusekho indawo enkulu yokunciphisa ixabiso kwiibhokisi zebhokisi zaseMelika.Ngakolunye uhlangothi, isigaba sesithathu sekholamu yentsimbi ye-iron transformer yebhokisi yaseMelika ingatshintshwa ibe yinqanaba lesithathu lentsimbi yentsimbi.Ngakolunye uhlangothi, inxalenye ephezulu ye-voltage ye-American box transformer inokuguqulwa ukusuka kwi-tank ye-oyile ye-transformer ihanjiswe ngaphandle kwetanki yeoli, ithatha indawo yegumbi eliphezulu.