Kutheni kufuneka kufakwe isikhuseli sokushushuluza kwibhokisi yokusasaza?

Yintoni indima yeisixhobo sokukhusela ukugabha(SPD) kwibhokisi yokusasaza:
Isikhuseli sokuhamba sifakwe emva kwe-input circuit breaker ngaphakathi kwebhokisi yokusasaza, kwaye umsebenzi waso ophambili kukukhusela umbane. Igama laso elipheleleyo yile: isikhuseli sokuhamba kombane.
Esi sixhobo sokukhusela i-overvoltage senzelwe ukuthintela iintlekele zombane, kwaye kubalulekile ukuqwalasela i-resonant overvoltage kumgca wokusasazwa kwe-low voltage. Sisixhobo sokukhusela esiyimfuneko kwinkqubo yonikezelo lwamandla e-low voltage.
Imozulu yemvula ikhusela ibhokisi yokusasaza kwiintlantsi zombane, kwaye i-voltage iphezulu, kwaye umsinga omkhulu ungena ngokukhawuleza emhlabeni usuka kwintambo yokumisa umhlaba ekhusela umbane. Isixhobo sokukhusela ukuvuza singumlindi womsebenzi wethu wokhuseleko wemihla ngemihla.
Izikhuseli zotyando zifanelekile kwiindawo ezahlukeneyo:
Ihlala ifakelwa kwiibhokisi zokusasaza, amaziko eekhompyutha, amagumbi onxibelelwano, amagumbi okulawula iilifti, amagumbi eTV yekhebula, amagumbi okulawula okuzenzakalelayo ezakhiwo, amaziko okucima umlilo, amagumbi okulawula okuzenzakalelayo emizi-mveliso, amagumbi okulawula izixhobo zokuguqula amaza rhoqo, amagumbi okusebenzela esibhedlele, iiyunithi zokhathalelo olunzulu kunye neebhokisi zokusasaza ezixhotyiswe ngezixhobo zonyango ze-elektroniki, njl. Ukongeza, ingafakelwa nakwibhokisi yokusasaza izibane eziphambili zezakhiwo zokuhlala ezingaphantsi kwemigangatho emithandathu.
Indlela yokuxhobisa isikhuseli sombane kwibhokisi yokusasaza:
I-SPDinokwahlulwahlulwa ibe lukhuselo lombane lweKlasi A, iKlasi B, iKlasi C, kunye neKlasi D, ezimiselwa ngokwevolthi kunye nomthamo webhokisi yokusasaza. Ukusasazwa kwe-380V kusebenzisa ukhuselo lombane lweKlasi B, i-40KA~60KA. Ibhokisi yokusasaza ye-220V isebenzisa ukhuselo lombane lweKlasi C, i-20KA~40KA.
Kutheni ibhokisi yokusasaza kufuneka ixhotyiswe ngesixhobo sokukhusela ukuvuza?
Ngethuba lokukhululwa kombane, i-voltage iphezulu, umsinga mkhulu, kwaye ixesha lokukhululwa kwamandla lifutshane. Akwanelanga ukuthembela kuphela kukhuseleko lwangaphandle lombane (iintambo zombane, njl.njl.). Amaza ombane aza kuhlasela ngokuthe ngqo okanye ngokungathanga ngqo imigca yamandla, imigca yesignali, imigca yokutya ye-antenna, kunye neepayipi zesinyithi. Umbane kunye ne-overvoltage ephumayo iya kubangela umonakalo omkhulu kwiinkqubo ze-elektroniki, izixhobo zombane, kunye neenkqubo zenethiwekhi yolwazi.
Umonakalo obangelwe ngumbane yenye yezona ntlekele zemvelo zinkulu kakhulu. I-voltage eseleyo kunye nombane ongeniswayo oveliswa ngumbane uya kuchaphazela izixhobo zombane ezisetyenziswa ekhayeni, nto leyo ebangela ii-short circuits kwizixhobo zombane ezisetyenziswa ekhayeni, nto leyo ekhokelela kwilahleko ezithe ngqo ezifana nokutsha kunye nokuqhuma.