Tlhaloso: E ka lokolla lehalima kapa tsamaiso ea matla a mabeli e sebetsang ka matla a fetang matla a motlakase, ea sireletsa lisebelisoa tsa motlakase ho overvoltage ea nakoana (ho feta ha lehalima, ho sebetsa ho feta tekano, matla a maqhubu a transient overvoltage shock), 'me e ka khaola mabili ntle le ho baka Sesebelisoa sa motlakase se etsang hore potoloho e khuts'oane e fihle. motheo oa tsamaiso.
Mosebetsi: Ha overvoltage e etsahala, motlakase pakeng tsa li-terminals tse peli tsa motho ea tšoaroang ha o fetise boleng bo boletsoeng, e le hore thepa ea motlakase e se ke ea senngoa ke overvoltage;ka mor'a hore ho sebelisoe overvoltage, tsamaiso e ka khutlela kapele ho boemo bo tloaelehileng ho etsa bonnete ba hore motlakase o tloaelehileng oa tsamaiso.
Lipontšo tse 'maloa tse amehang ho sekoahelo sa matla
(1) Sebopeho sa Volt-second: se bua ka kamano e tsamaellanang lipakeng tsa motlakase le nako.
(2) Power frequency freewheeling: e bolela matla a maqhubu a nako e khuts'oane a motlakase a phallang ka mor'a hore motlakase oa lehalima kapa overvoltage e tsoe, empa motlakase o ntse o sebetsa ho motho ea tšoarang.
(3) Bokhoni ba ho tsosolosa matla a dielectric: kamano pakeng tsa matla a dielectric a thepa ea motlakase le nako, ke hore, lebelo la ho hlaphoheloa ho matla a pele a dielectric.
(4) Maqhubu a lekantsoeng a sets'oants'o: matla a maholo a maqhubu a matla ao lekhalo le ka mamellang ka mor'a hore motlakase oa motlakase oa motlakase o fetele pele ho zero ka lekhetlo la pele, 'me o ke ke oa etsa hore arc e buse, e tsejoang hape e le arc voltage.