Power frequency AC sparkover voltage measurements of small air gaps

This paper pnscnb fds.lb of tests condacted in the €€@I Voltage Laboratory of The Oh& State Univemity u d de& with pamr frrcl.cneg AC spnrkover voltnge mensuremeats d small rir gaps. Emphust was placed om obtaining brukdm c 8 l l - W of electrodes nnd air p p reparations that are reprtrcabthrc of power linsr 69LV d bel-. Besides the castanary rod-rod, rod-pbe, u d sphemplnne arnngemcstr, other electrode configmrrtiaer imchded wriorw conduetor riasl with condm&ofwod, -plane, and -8pbem arnngemenb and eaaductofihot stick conflguatb~ with hook, puller, nnd wire brash It wns roUd thnt tbe conductor size has signifiant #&et aa the spdcover voltnge. In addition, for the more practkal electrode ummpmmb invdving eondaetors, the spnrlFavcr voltnges were greater tLu the rod-rod malt8 in all but a few iastnnm.