Title: Problemy optimizat︠s︡ii sistemy ėkspluatat︠s︡ii podvesnoĭ izoli︠a︡t︠s︡ii na VL i v ORU ėlektrostant︠s︡iĭ i podstant︠s︡iĭ ėnergosistem
Subjects: Electric insulators and insulation