Izindaba - Yini i-PT/CT?

PTngokuvamile eyaziwa ngokuthi i-voltage transformer embonini yamandla futhi i-CT igama elivamile le-transformer yamanje embonini yamandla.

I-Voltage transformer (PT): iyithuluzi likagesi elishintsha amandla kagesi aphezulu abe yi-voltage ethile esezingeni eliphansi (100V noma 100 / √ 3V).

I-transformer engenzeka (PT, VT) ifana ne-transformer, esetshenziselwa ukushintsha i-voltage kulayini.Kodwa-ke, inhloso yokuthi kungani i-transformer iguqule i-voltage ukudlulisa amandla kagesi.Umthamo mkhulu kakhulu, ngokuvamile ku-kilovolt ampere noma i-megavolt ampere njengeyunithi yokubala.Inhloso yokuthi kungani i-voltage transformer iguqula i-voltage isetshenziswa kakhulu ukukala amamitha namandla kagesi ngamadivaysi okuvikela adluliselwe, ukukala i-voltage, amandla namandla kagesi olayini, noma ukuvikela izinto ezibalulekile kulayini lapho ulayini wehluleka Ngakho-ke, amandla I-voltage transformer incane kakhulu, ngokuvamile i-volt ampere embalwa kuphela, inqwaba ye-volt ampere, futhi umkhawulo awukho ngaphezu kwenkulungwane ye-volt ampere.

I-Transformer yamanje (CT): impahla kagesi eshintsha amandla amanje ohlelweni lwamandla kagesi aphezulu noma amandla amakhulu ohlelweni lwamandla kagesi aphansi ibe isaka elithile elincane elijwayelekile (5a noma i-1a).

I-transformer yamanje iyithuluzi eliguqula i-current enkulu ohlangothini oluyinhloko ibe yamanje encane ohlangothini lwesibili ngokuya ngesimiso sokungeniswa kuka-electromagnetic.I-transformer yamanje yenziwe ngomgogodla ovaliwe kanye nama-winding.Ukujika kwayo okumazombezombe okuyinhloko mancane kakhulu, futhi ixhunywe kuchungechunge kumjikelezo odinga ukukala umsinga.Ngakho-ke, ngokuvamile inawo wonke amanje agelezayo emugqeni, futhi ukuphenduka okuphenduka okwesibili kuningi.Ixhunywe ochungechungeni ensimbini yokulinganisa kanye nesekethe yokuvikela.Lapho i-transformer yamanje isebenza, isifunda sayo sesibili sihlala sivaliwe, ngakho-ke i-impedance ye-coil yochungechunge yensimbi yokulinganisa kanye nesifunda sokuvikela sincane kakhulu, futhi isimo sokusebenza se-transformer yamanje siseduze nesifunda esifushane.I-transformer yamanje iguqula i-current enkulu ohlangothini oluyinhloko ibe yamanje encane ohlangothini lwesibili lokulinganisa, futhi uhlangothi lwesibili alukwazi ukuvulwa isifunda.