Main uhlelo earthing

Umuntu owazi okuncane mayelana ubunjiniyela kagesi, kungase kubonakale sengathi bonke izakhiwo zokuhlala usebenzise ubuchwepheshe obufanayo amandla ukusatshalaliswa izikimu: labo efanayo ezimbili izintambo, ukushintshwa nezinyawo.
Nokho, okuningi eziyinkimbinkimbi, kanye neqiniso lokuthi ingqondo - nje "kuwukusika elijikayo." Ekhona amandla ukusatshalaliswa izifunda kukhona zahlukile esinye kwesinye, okokuqala kunakho konke, indlela isisekelo lesi sitshalo kwenta ubuye ugcogce imishini ohlangothini umthengi. Ngamanye amazwi, sihluke earthing izinhlelo. Nakuba akusiwona sobala, leli phuzu kubaluleke kakhulu.

Njengamanje, kusetshenziswa kakhulu ezintathu eziyisisekelo isisekelo uhlelo - izinhlobo IT, TN, TT, nemikhiqizo yalo. Lolu phawu kuyinto ngempela ulwazi, kodwa kuphela ukuthi kunjalo, uma wazi ukuthi ukususa ukubhala ngekhodi ngaso.

Ekhona uhlelo phansi

Lenchazelo libhekisela omunye ukucushwa kwe-grid ekhona, uyakucabangela samuntu esetshenziswa of isisekelo imishini kumsebenzisi ifakiwe njengoba wire phansi kanye umugqa oholayo, kanye ngabe kokungathathi hlangothi lihlala. Okungukuthi, lo mqondo kuyinto isambulela. Kuye inhlanganisela yalezi zinto, kukhona izigaba ezintathu.

Omunye main - lokhu TN. Kuyinto segama Terre Neutre, okungase lihunyushwe kwelesiHeberu elithi French njengoba earthed hlangothi.

Kuyinto ngendlela enengqondo TN-C. Lapha, igama elithi "C" lumelela igama elithi "Kuhlanganiswe". Ngokungafani sangaphambilini ukuthi wire hlangothi futhi isisekelo zenziwe umugqa owodwa. Lesi sici ikuvumela ukunciphisa inani lemigqa wabeka, kodwa uma ukuphazanyiswa ngezintambo amacala kufakwe amadivayisi wenethiwekhi liyavela i engaba kagesi, okuyinto iyingozi. Noma kunjalo, ngezinye izikhathi indlela enjalo isetshenziswa ngokungabi bikho ngezisebenzi efulethini lwesithathu phansi wire: ezikhoxeni phakathi zero futhi earthing contact jumper ibekwe. uhlelo isisekelo okunjalo Kunconywa ukuba isetshenziswe ezimweni ezimbili:

- ayikho enye kungenzeka ukuba imishini phansi;

- emgqeni is ngaphezu kwalokho evikelwe kudivayisi ezithothene RCDs.

I ngqo okuphambene inhlanganisela - a TN-S (kusuka «ahlukene» - yokuhlukanisa). It zero nomhlaba imigqa ehlukene.

Okulandelayo ohlelweni main - TT. Ikhipha limelela ezimbili ezimele isisekelo imigqa: eyodwa ezifuywa ohlangothini transformer, kanti eyesibili - umthengi.

Ekugcineni, omunye ongakhetha enokwethenjelwa kakhulu ethulwa IT uhlelo lapho imigqa kokungathathi hlangothi elingalodwa, nayo yonke emzimbeni zikagesi umthengi ngokuphephile lusekelwe. Ngenxa yalokho we zemvelo ukuvuza lwamanje abangelutho kakhulu, ngisho uma ngephutha hit indoda ngaphansi isenzo ngengozi kagesi engaba akuyona, ushiya phansi. Kulokhu-ke kubalulekile ukulawula inani ukumelana.

Uma unanoma yimiphi uhlelo ukuze babonwe umthetho ukuthi ukumelana earthing singadluli 4 ohms. Ngakho-ke, yiluphi uhlelo, kusukela pin isisekelo futhi izintambo yokuqedela futhi uxhumano amaphuzu, it is kuhlolelwe ukuhambisana nale mfuneko.