Izithinteli zokugquma umbane eziphantsi zeYuanky zibonelela ngokhuseleko kwimigca ephezulu ye-voltage ephantsi, izinto ezisetyenziswa ngabathengi, ii-transformers zokusasaza kunye nezinye iinkqubo. I-varistor ye-metal-oxide engenazikhewu efakwe kwi-surge arrester ngokuthembekileyo ibeka imida yexabiso eliphantsi kwi-surges ezibangelwa yi-atmospheric overvoltages kunye ne-switching transients, ngaloo ndlela ikhusela ubushushu benethiwekhi kunye nezixhobo ezisecaleni kwabathengi. I-varistor inexesha elifutshane kakhulu lokuphendula (ngesiqhelo<100 ns) kwaye inokusingatha ngokukhuselekileyo iimpembelelo zombane ophezulu ukuya kuthi ga kwi-100 kA, 4/10 μs. Umsinga wokukhupha oqhelekileyo we-arrester yi-10 kA. I-varistor ye-metal-oxide ivalelwe kwi-polymer eqinileyo, engangeni manzi. Uvavanyo oluninzi luqinisekisile ukuqina kwe-home, nokuba ijongene nokuguquguquka okukhulu kobushushu kunye nongcoliseko. Ii-LV surge arresters ziyahambelana neemfuno zeKlasi II njengoko zichazwe yi-IEC 61643-1.