I-SPD(Isixhobo Sokukhusela Ukugquma, i-surge protector) isetyenziswa kakhulu ukuthintela ukugqithisa okwethutyana okubangelwa kukubetha kombane okanye imisebenzi yokutshintsha igridi kwizixhobo ezonakalisayo. Amaxabiso kunye neendawo ezifanelekileyo ze-SPDS ezenziwe ngezinto ezahlukeneyo kunye nezakhiwo ziyahluka.

Inxalenye eqhelekileyo ye-SPD yi-zinc oxide varistor (MOV), enexabiso eliphantsi kwaye ikhawuleza ukuphendula. Isetyenziswa kakhulu ekukhuseleni izakhiwo zokuhlala, izakhiwo zorhwebo, iikhabhathi zokusasaza kunye nezixhobo zoshishino. Ixabiso le-MOV type SPD lokusasaza okuqhelekileyo okuphantsi kwe-voltage ngokubanzi liqala kumashumi ukuya kumakhulu eeyuan.

I-SPD esebenzisa iityhubhu zokukhupha igesi (i-GDT) inomthamo ophezulu wokuthwala umsinga kunye nokusebenza kobushushu, kwaye ifanelekile ukukhusela imigca yamandla abuthathaka kwizikhululo zonxibelelwano, amaziko edatha, iinkqubo zokhuseleko, njl. Ixabiso layo lidla ngokuba phezulu kuneleemveliso zeMOV eziqhelekileyo.

Iimveliso ze-SPD eziphezulu ziya kusebenzisa ulwakhiwo oludibeneyo lwe-MOV+GDT. Ezinye iimveliso zikwaxhotyiswe ngezixhobo zokuhamba ngobushushu, ukubonisa iimpazamo kunye nemisebenzi ye-alamu ekude, enika ukhuseleko oluphezulu kunye nokuthembeka. Zifanelekile kwiindawo ezibalulekileyo ezifana nezibhedlele, iinkqubo zamandla, ezothutho lukaloliwe, izikhululo zamandla ze-photovoltaic kunye neenkqubo zolawulo lwe-automation yemizi-mveliso, kunye namaxabiso aqala kumakhulu aliqela ukuya kumawaka aliqela eeyuan.

Kwizakhiwo zeeofisi eziqhelekileyo, iindawo zokuhlala kunye neevenkile, uhlobo lwe-MOV SPDS oluqhelekileyo lunokukhethwa. Kwiindawo ezinemisebenzi yombane rhoqo, amagumbi onxibelelwano, amaziko edatha kunye neeprojekthi ezibalulekileyo zoshishino, kucetyiswa ukuba ukhethe i-SPDS enomthamo odibeneyo okanye ophezulu wombane ukuphucula amandla okukhusela umbane kunye nokukhusela umbane ogqithisileyo kwenkqubo kunye nokuqinisekisa ukusebenza okuzinzileyo kwexesha elide kwezixhobo.

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