Okokuqala, singaqonda ukuthi ukulahlekelwa kwe-dielectric ukuthi i-dielectric ingaphansi kwesenzo sensimu kagesi.Ngenxa yokushisa kwangaphakathi, izoguqula amandla kagesi abe amandla okushisa futhi iwadle.Le ngxenye yamandla asetshenzisiwe ibizwa ngokuthi ukulahlekelwa kwe-dielectric.
Ukulahlekelwa kwe-Dielectric akugcini nje ngokudla amandla kagesi, kodwa futhi kushisa izingxenye zemishini futhi kuthinte ukusebenza kwayo okuvamile.Uma ukulahlekelwa kwe-dielectric kukhulu, kuzodala ukushisa okuphakathi, okuholela ekulimaleni kokufakwa, ngakho-ke ukulahlekelwa okuncane kwe-dielectric, kungcono.Lokhu futhi kungenye yezindinganiso ezibalulekile zekhwalithi ye-dielectric emkhakheni kagesi we-AC.
I-GD6800 Capacitance and Dissipation Factor Tester
Ake sikhulume ngendlela yokusebenzisa umhloli wokulahlekelwa kwe-dielectric ukukala ukulahlekelwa kwe-dielectric kwe-transformer.Ngemuva kokuthi siqale ithuluzi lokulinganisa, inani lokusetha i-voltage ephezulu lithunyelwa ekuphakelelweni kwamandla okuguquguquka kwefrikhwensi, futhi ukunikezwa kwamandla kwefrikhwensi okuguquguqukayo kusebenzisa i-algorithm ye-PID ukulungisa kancane okukhiphayo kube ivelu okufanele lisethwe, bese isifunda esilinganisiwe sizokwenza. thumela i-voltage ephezulu elinganisiwe ekuphakeleni kwamandla kagesi okuguquguqukayo, bese Ulungisa kahle i-voltage ephansi ukuze uzuze ukukhishwa kwamandla kagesi aphezulu okunembile.Ngale ndlela, ngokuya ngokulungiselelwa kwezintambo eziphozithivu/ezihlehlayo, ithuluzi lizokhetha ngobuhlakani nangokuzenzakalelayo okokufaka futhi lishintshe ububanzi ngokuya ngokuhlolwa kwamanje kwesekethe yokulinganisa.
Uma sikala ukulahleka kwe-dielectric kokujika kwe-voltage ephezulu ukuya kumajika kagesi aphansi kanye negobolondo lesiguquli samandla, sisebenzisa indlela yokuhlehla yokuxhuma ukuze silinganise.Ngemuva kokuthi insimbi nesiguquli samandla kuxhunywe ngendlela efanele, sisebenzisa imvamisa ehlukile, isilinganiso se-voltage engu-10kV, kanye nendlela yokuhlehla yokuxhuma.Le ndlela isetshenziswa lapho itheminali yokulinganisa i-low-voltage noma itheminali yesibili yento yokuhlola ingakwazi ukuvaleka ukusuka phansi futhi isekelwe ngokuqondile.Ithuluzi lamukela ukuguqulwa kwe-Fourier ukuze lihlunge ukuphazamiseka futhi lihlukanise amagagasi ambalwa esignali, ukuze yenze ukubala ivekhtha kumthamo wamanje ojwayelekile kanye nomthamo wokuhlola, ibale amandla ngama-amplitude, futhi ibale i-tgδ ngomehluko we-engeli.Ngemva kokulinganisa okuningi, umphumela omaphakathi ukhethwa ngokuhlunga.Ngemva kokuphela kokulinganisa, isifunda sokulinganisa sizokhipha ngokuzenzakalelayo umyalo wokuya phansi.Ngalesi sikhathi, ukunikezwa kwamandla okuguquguqukayo kuzokwehla kancane kancane kuye ku-0.
Isikhathi sokuthumela: Mar-22-2023