Na mba m 3 ~ 35KV ike ọkọnọ usoro, ọtụtụ n'ime ha na-anọpụ iche ebe enweghị grounded usoro.Dị ka iwu mba si kwuo, mgbe otu nkwụsị ala na-eme, a na-ahapụ usoro ahụ ka ọ na-agba ọsọ na mmejọ maka awa 2, nke na-ebelata ụgwọ ọrụ na-arụ ọrụ nke ukwuu ma na-eme ka ntụkwasị obi nke usoro ọkụ eletrik dịkwuo mma.Otú ọ dị, n'ihi mmụba nke nwayọọ nwayọọ na ike inye ike nke usoro ahụ, ọnọdụ ọkụ eletrik bụ A na-eji nwayọọ nwayọọ gbanwee eriri n'elu ka ọ bụrụ eriri eriri, na ikike ikike nke usoro ahụ na ala ga-adị nnọọ ukwuu.Mgbe usoro ahụ gbadoro ụkwụ n'otu oge, arc nke oke ike na-eme ugbu a adịghị mfe imenyụ, ọ ga-abụkwa na ọ ga-etolite n'ime ala arc na-adịte aka.N'oge a, arc grounding overvoltage na ferromagnetic resonance overvoltage na-atọ ụtọ ya ga-abụ Ọ na-eyi egwu arụ ọrụ nchekwa nke grid ike.N'ime ha, otu-phase arc-ala overvoltage bụ ihe kachasị njọ, na ọkwa overvoltage nke oge na-adịghị mma nwere ike iru 3 ruo 3.5 ugboro voltaji arụ ọrụ nkịtị.Ọ bụrụ na oke oke dị otú ahụ na-arụ ọrụ na grid ọkụ ruo ọtụtụ awa, ọ ga-emebi ihe mkpuchi nke akụrụngwa eletrik.Mgbe ọtụtụ ugboro nke mkpokọta mmebi nke mkpuchi mkpuchi nke ngwa eletriki, a ga-emepụta ebe na-adịghị ike nke mkpuchi, nke ga-eme ka ihe mberede nke mkpuchi mkpuchi ala na obere sekit dị n'etiti usoro, ma n'otu oge ahụ na-eme ka mkpuchi mkpuchi nke ngwa eletrik (karịsịa). ndakpọ mkpuchi nke moto) ), ihe na-agbawa ọkụ nke USB, saturation nke voltaji transformer na-eme ka ahụ ferromagnetic resonance na-ere ọkụ, na mgbawa nke njide na ihe mberede ndị ọzọ.