Uhlelo lokuqapha ukukhanya kwe-arc lwe-WLD9600U Series Switchgear luyisistimu yokuzivikela esebenzayo esetshenziselwa ukuthola ngokushesha futhi isuse ukukhanya kwe-arc okubangelwa ukungasebenzi kahle kwe-short circuit noma i-insulation ngaphakathi kwemishini efana ne-switchgear, i-busbar, njll., ukuze kuvinjwe ukuqhuma kwemishini, umlilo, kanye nokulimala kwabantu. Izinga lokushisa lokukhanya kwe-arc lingafinyelela ngaphezu kuka-10,000 ℃, futhi lingashisa imishini ngemizuzwana embalwa, okuyinto ukuvikelwa okujwayelekile kwe-overcurrent kungakwazi ukubhekana nakho kahle ngenxa yokubambezeleka kokusebenza (kwesibili), ngakho-ke kudingeka ukuvikelwa okukhethekile kwe-arc.