Stepping of HV cable insulation

[dustincorvette]

Which insulation requires stepping I answered EPR I believe the other choices were XLPE or oil insulated any thought?

[gchoquette]

Which insulation requires stepping I answered EPR I believe the other choices were XLPE or oil insulated any thought?

I spliced many PILC cables and they required stepping of the paper insulation layers. 3/4" long steps, 4-5 steps if I remember well.
Never had to step the insulation of either EPR or XLPE.

PILC is getting rare, splices are only done for repairs.

[akumaleon]

Which insulation requires stepping I answered EPR I believe the other choices were XLPE or oil insulated any thought?

Which type of insulation requires stepping?

a.EPR
b.Oil impregnated paper
c.XLP
d.XLPE
e.EPM

I am pretty sur its not EPR or XLPE.

I am leaning on the oil impregnated paper I think these were often tested with AC (PILC) not sure... what voltage its actually required! some will say only above 35kV.

https://www.pesicc.org/iccWebSite/subcommittees/E/E04/2003/Buchholz_spr2003.pdf