Guano flashover ili ndi mitundu iwiri: imodzi ndi flashover yomwe imayambitsidwa ndi kusonkhana kwa pamwamba pa insulator. Komabe, chifukwa mbalame zimalekanitsidwa ndi magawo angapo ndi ambulera yoteteza, mwayi woti flashover yolunjika ikhale yotsika kwambiri. Ina ndi guano slippage insulation yomwe imagwera pafupi, nucleus yolunjika imayambitsa kutuluka kwafupipafupi pakati pa zida zagolide zapamwamba ndi zapansi, ndipo palibe zizindikiro za guano zomwe zatsala pa sueko, yomwe ndi njira yayikulu yowunikira guano. Potengera kutsanzira bwino zomwe zimachitika pa flashover ya mbalame zoteteza, dipatimenti ya zamagetsi ya yunivesite ya Tsinghua yaphunzira momwe flashover imagwirira ntchito komanso momwe flashover imakhalira ya guano, ndipo yatsimikiza kuti nthawi yotsika ya guano imasokoneza kufalikira kwa magetsi kuzungulira insulator, zomwe zimapangitsa kuti mpweya wa guano ugwere kumapeto kwa insulation, zomwe zimapangitsa kuti flashover ya insulator igwere. Potengera suozi yopangidwa ndi 110 kv mwachitsanzo, circumference yokhala ndi mainchesi 55cm iyenera kutetezedwa ndi fantian. Nthawi yomweyo, ganizirani kuti guano ya mphepo idzagwa ngati parabola. Pantchito yeniyeni, malo opingasa pamwamba pa nsanja adzaonedwa ngati chinsinsi chopewera mbalame mkati mwa 30-45° ndi chingwe chotetezera ngati maziko ndi ngodya pakati pa mbali ziwiri. Kachiwiri, kuti mbalame zitsimikizire kuchulukana kwina, mbalame "zimatseka" kwathunthu kunja kwa malo otetezera.

Mu ntchito zauinjiniya, chifukwa cha mtundu wovuta wa nsanja, madera ena ofunikira otetezera mbalame angasiyidwe, zomwe zimapangitsa kuti mbalame zisawonongeke bwino. Mbalame zomwe zimakwera pamwamba pa chotetezera cha waya wa magawo atatu zimayikidwa pamalo ake, koma minga ya mbalameyo siyikidwa pamtengo wapansi pamwamba pa waya wam'mbali, zomwe zimasiya vuto lobisika chifukwa cha vutolo.