Umhloli wokumelana we-insursuss ulungele ukukala inani lokumelana nezinto zokwakha ezahlukahlukene kanye nokumelana kwama-transformers, motor, amakhebuli kanye nemigqa kagesi, ukuqinisekisa ukuthi imishini kagesi isebenza ezimweni ezijwayelekile ukugwema ukushaqeka kukagesi, ukulimala kanye nemishini Ukulimala.
Izinkinga ezijwayelekile zokuhlolisisa ukumelana kokufakelwa kungokulandelayo:
1
Ubungako bokukhishwa kwesikhashana-umbungu wamanje we-Insuration Reraction Tester angakhombisa usayizi wokumelana kwangaphakathi komthombo ophakeme we-voltage emthonjeni we-megger.
Izivivinyo eziningi zokufaka okuhlosiwe kwethagethi, njengezintambo ezinde, ama-motors ane-windings eyengeziwe, kanye nabaguquli. Ngakho-ke, lapho ilitshe elinganisiwe linekhono, ekuqaleni kwenqubo yokuhlola, umthombo wamandla we-high-voltage ku-capacitor ngokumelana kwawo kwangaphakathi, bese ukhokha kancane kancane ivolutela kokukhishwa okungeziwe kwamandla we-high-voltage Umhloli wokumelana wokufakelwa. . Uma inani le-capacitance lelitshe elinganisiwe likhulu, noma ukumelana kwangaphakathi komthombo ophakeme we-voltage kukhulu, inqubo yokushaja izothatha isikhathi eside.
Ubude bawo bunganqunywa ngomkhiqizo we-R indawo yangaphakathi ne-C (iyunithi: Okwesibili), okungukuthi, t = r indawo yangaphakathi ye-C.
Ngakho-ke, ngesikhathi sokuhlolwa, kuyadingeka ukukhokhisa umthwalo onjalo we-capacitive kumandla okuhlola, futhi i-DV ye-DV / DT yokushaja ilingana nesilinganiso sokushaja okukhona njengamanje I / c.
Ngakho-ke, incane ukumelana kwangaphakathi kanye nokushaja okukhulu kwamanje, ngokushesha imiphumela yokuhlola izoqina.
2. Uyini umsebenzi wohlangothi lwe- "G" lokubukeka? Emvelweni wokuhlola we-high
Ukuphela kwe- "G" komhlaba kuyisizinda sokuvikela. Umsebenzi we-terminal yokuvikela ukususa ithonya lomswakama kanye nokungcola endaweni yokuhlola emiphumeleni yokulinganisa. I- "G" ebulalayo ye-Externaly Laterpage i-EachAge yamanje yomkhiqizo ohloliwe, ukuze i-veageage yamanje ayidluliseli kwisifunda sokuhlola sangaphandle, futhi isusa iphutha elibangelwa yisikhathi sokuvuza. I-G terminal isetshenziswa lapho kuhlolwa ukumelana okuphezulu.
Ngokuvamile, i-G terminal ingabhekwa ngaphezulu kwe-10G. Kodwa-ke, leli banga lokumelana aliqinisekile. Lapho ihlanzekile futhi yomile futhi ivolumu yento yokuhlola incane, ingaqina ngaphandle kokulinganisa ama-500g ekugcineni kwe-G. Ezindaweni ezinomswakama nezingcolile, inani lokumelana eliphansi lidinga ukuphela kwe-G. Ngokukhethekile, uma uthola ukuthi imiphumela kunzima ukuzinza lapho ulinganisa ukumelana okuphezulu, ungacabanga ngokusebenzisa ukuphela kwe-G. Futhi qaphela ukuthi i-terminal g evikelekile ayixhunyiwe kungqimba lokuvikela, kepha ku-insulator phakathi kwe-L ne-E noma ku-wire onamakhanda amaningi, hhayi kwezinye izintambo ngaphansi kovivinyo.
3. Kungani kungafuneki kuphela ukukala inani lokumelana elihlanzekile lapho ulinganisa ukufakwa, kepha futhi ukukala isilinganiso sokufaka isilinganiso kanye ne-polaristization inkomba. Yini iphuzu?
I-PI yinkomba ye-polarization, esho ukuqhathanisa phakathi kokulwa nokuphikiswa kwemizuzu eyi-10 kanye nokumelana nokufakelwa komzuzu 1 ngesikhathi sokuhlolwa kokufakwa;
I-DAR iyisilinganiso sokutholwa kwe-dielectric, esisho ukuqhathanisa phakathi kokulwa nokuphikiswa okungu-1 ngomzuzu 1 kanye nokumelana kokufakelwa kwama-15s ngesikhathi sokuhlolwa kokufakwa;
Esivivinyweni sokufakwa, inani lokumelana lokufakelwa ngesikhathi esithile alikwazi ukubonisa ngokugcwele umsebenzi wokufakelwa kwesampula yokuhlola. Lokhu kungenxa yezizathu ezimbili ezilandelayo. Ngakolunye uhlangothi, ukumelana kokufakelwa komsebenzi ofanayo wezinto zokufakelwa kuncane lapho ivolumu inkulu. , Ukumelana nokufakelwa kokufakelwa kuvela lapho ivolumu incane. Ngakolunye uhlangothi, impahla efaka ama-insulating inenqubo yokulinganisa ukumuncwa kanye nenqubo yokukhokhiswa kwenkokhiso ngemuva kokusetshenziswa kwamandla aphezulu. Ngakho-ke, uhlelo lwamandla ludinga isilinganiso sokulinganisa kokumuncwa - isilinganiso sama-R60s kanye nama-R15s, kanye ne-ratio ye-R10min evivinywa ama-transformers amakhulu, amakhebuli, ama-motors nezinye izikhathi eziningi, futhi zisebenzise lokhu Idatha yokuthola ukufakwa okuhle noma okubi.
4. Kungani umhloli wokumelana we-elekthronikhi angakhiqiza ugesi ophakeme we-DC ephakeme lapho enikezwe amandla amabhethri amaningana? Lokhu kusekelwe emgomeni wokuguqulwa kwe-DC. Amandla kagesi aphansi aphansi aphakanyiselwa ku-voltage ephakeme ye-DC ngokuqinisa ukucubungula umjikelezo. Amandla kagesi aphezulu akhiqizwa aphezulu kepha amandla okukhipha mancane (amandla aphansi kanye namanje).
QAPHELA: Noma ngabe amandla amancane kakhulu, akunconywa ukuthi athinte mathupha ukuthinta uphenyo wokuhlola, usazobe nomuzwa wokudonsa.
Isikhathi sePosi: Feb-06-2021
