Answer Posted / anil

now most of the HT and EHV cables are with XLPE insulation.
earlier, in mid 70's HT cable are insulated with PILC(paper
insulated and lead covered. OIL is filled to reduce moisture
in paper. disd of PILC cables is very heavy almost double
the weight of XLPE cable but adv is the chance of voids are
very less in PILC cable. Lead is not ECO-friendly,it is
almost banned in europe, US and few countries in ASIA. Cost
is very High as compare to XLPE cable. whereas XLPE cable
are lighter in weight.Long life,easy to handle. jointing is
less costly.

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