Mheni inosunga inodzivirira overvoltage, kunyanya kudzivirira kwemagetsi emagetsi system, njanji magetsi masisitimu, mafambisirwo ekutaurirana muavariety yemidziyo yemagetsi ( transformer,switch, capacitor, trapper, transformers, jenareta, mota, tambo dzemagetsi) kubva mumhepo pamusoro pevoltage, overvoltage uye yenguva pfupi pamusoro-voltage kukuvara kwakadaro, ndiyo hwaro hwesimba system insulation kurongeka.Metal oxide surge inosunga yezvakakosha zvinhu (resistors) ine zinc oxide yakavakirwa epamusoro maumbirwo, ine yakanakisa nonlinear (VA) hunhu, kureva mune yakajairika yekushanda voltage, iripo kuburikidza neiyo chete microampere nhanho, kana ichiiswa kune voltage, ikozvino kuburikidza nenguva yasvika zviuru zveamperes, gadzira mheni inosunga pa-state voltage, kuburitswa kwesimba, nokudaro zvinobudirira.pamusoro-voltage pamusoro simba kutapurirana uye shanduko midziyo kukuvara.Traditional silicon carbide surge arrester imhaka yekunonoka kubuda kwemafungu kunokonzerwa nemhepo inoyerera wave discharge voltage yakakwira, operation wave discharge disperity mu operation wave discharge voltage.high. Zinc oxide surge arrester ine yakanaka wave mhinduro ye wave voltage, pasina kunonoka, kushanda kwakasara kudzvinyirirwa, hapana kubuda kupararira etc..zvakanyanya, asi zvakare mukubatanidza kusungirirwa, inogona kuve yakadzika mafungu, mheni, mashandiro evhavha inodzivirira yekudzivirira yakada kufanana, kuitira kuti ipe dziviriro yakanakisa yemagetsi emagetsi emagetsi.Composite yakanamirwa simbi oxide mheni inosunga, inotora yakakosha jekiseni kuumbwa, mbiri yekuisa chisimbiso tekinoroji, yakanaka yekuisa chisimbiso kuita, kuputika kwehumbowo kuita, uye inogona kuderedza kusvibiswa.kuramba mahara kuchenesa mhute yakanyorova bvudzi, magetsi erosion kuramba, kuchembera kuramba, vhoriyamu diki, huremu huremu, kuisirwa nyore uye kugadzirisa. Porcelain ndiyo seti yekusunga mheni kune iyokuvandudzwa kwezvinhu.