Grounding resistance cabinet

Tlhaloso e Khutšoanyane:

Ka tsoelo-pele e potlakileng ea marang-rang a matla a metse le mahaeng, liphetoho tse kholo li etsahetse mohahong oa marang-rang a matla, 'me marang-rang a kabo a laoloang ke lithapo a hlahile.Matla a fatše a eketsehile haholo.Ha phoso ea fatše ea karolo e le 'ngoe e etsahala tsamaisong, ho na le liphoso tse fokolang le tse fokolang tse ka khutlisetsoang.Tšebeliso ea mokhoa oa ho hanyetsa mobu ha o ikamahanye le nts'etsopele e kholo le litlhoko tsa phetoho ea marang-rang a matla a naha ea heso, empa hape o fokotsa boemo ba ho kenya letsoho ba thepa ea phetisetso ea matla ka sehlopha se le seng kapa tse peli, ho fokotsa matsete a marang-rang a matla ka kakaretso.Khaola phoso, hatella overvoltage ea resonance, 'me u ntlafatse polokeho le ts'epahalo ea sistimi ea matla.

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Re romelle lengolo-tsoibila

Lintlha tsa Sehlahisoa

Li-tag tsa Sehlahisoa

Tlhaloso ea Sehlahisoa

Hona joale, mokhoa o sa nkeng lehlakore oa ho theha motheo ka ho hanyetsa o ngotsoe melaong ea indasteri ea matla.Tekanyetso ea indasteri ea matla DL/T620-1997 "Ts'ireletso ea Overvoltage and Insulation Coordination of AC Electrical Installations" e hlakisa ho Article 3.1.4: "5~35KV haholo-holo e entsoe ka Bakeng sa sistimi ea phetisetso le kabo ea motlakase e entsoeng ka likhoele tsa mohala, ha mohala o le mong. -Phase ground fault e na le capacitive e kholo ea hona joale, mokhoa oa ho theola maemo o tlase o ka sebelisoa, empa litlhoko tsa ts'epo tsa phepelo ea motlakase, phello ea motlakase oa nakoana le hona joale ho lisebelisoa tsa motlakase nakong ea liphoso, le Kameho mabapi le litlhoko tsa tekheniki tsa ts'ireletso ea Relay. le boiphihlelo ba ts'ebetso ea lehae, joalo-joalo. ”Article 3.1.5 e hlalosa: "5KV le 10KV tsamaiso ea kabo ea matla le tsamaiso ea matla a fektheri ea matla, ha karolo e le 'ngoe ea sebaka se le seng sa capacitor e le nyenyane, e le ho thibela Kotsi ho lisebelisoa tse kang resonance, gap, I arc grounding overvoltage, joalo-joalo. ., e ka thehoa ka lebaka la khanyetso e matla.”

Bakeng sa moralo le khetho ea likhabinete tsa ho hanyetsa, ka kopo sheba hape ho: DL/780-2001 Distribution System Neutral Grounding Resistor Neutral Grounding Method ke mokhoa o kenyelletsang boemo ba ho kenella ka har'a mela le lisebelisoa, tšitiso ea puisano, ts'ireletso ea phepelo le ts'ireletso ea marang-rang ea phepelo ea motlakase. Ka lebaka la bothata bo pharaletseng ba ho tšepahala le lintlha tse ling, mekhoa ea phepelo ea motlakase ea marang-rang a kabo ea naha ea heso le likhoebo tse kholo tsa indasteri le tsa merafo li fapane.Nakong e fetileng, boholo ba bona ba ne ba sebelisa mokhoa oa ts'ebetso oa ntlha e sa jeleng paate 'me e thehiloe ke arc suppress coil.Lilemong tsa morao tjena, ka lebaka la nts'etsopele ea tsamaiso ea matla le ho eketseha ha tšebeliso ea matla ea basebelisi, li-grids tse ling tsa profinse le tsa masepala li khothalelitse ka matla mokhoa oa ts'ebetso oa ho hanyetsa mobu.