28 kV XLPE Cable with 133% Insulation Level
28 kV XLPE Cable with 133% Insulation Level
(OP)
I have to replace 28kV 1250 kcmil PILC cable with XLPE cable. That was good as long as I calculated with 100% insulation level.
Now I found that my 28kV side is grounded through the reactance what means that 133% insulation level must be provided.
Unfortunately, I can NOT find any vendor selling 28kV XLPE cables with 133% insulation having cross section more than 1000 MCM
( I need 1250 MCM).
Now I found that my 28kV side is grounded through the reactance what means that 133% insulation level must be provided.
Unfortunately, I can NOT find any vendor selling 28kV XLPE cables with 133% insulation having cross section more than 1000 MCM
( I need 1250 MCM).






RE: 28 kV XLPE Cable with 133% Insulation Level
Most manufacturers (Okonite, Prysmian, General Cable, Anixter, etc) will be able to provide this cable, even up to 2500 kcmil. Usually catalogs go up to 1000 kcmil.
If you give them a call and ask I am pretty sure they will meet your needs. A 1250 kcmil 28 kV XLPE 133% is not an uncommon cable.
Regards,
RE: 28 kV XLPE Cable with 133% Insulation Level
a. Use 2 sets of 750 kcmill triplexed conductors.
b. Use 1-set of 1250 kcmil single conductors.
RE: 28 kV XLPE Cable with 133% Insulation Level
Just a clarification; Do you need to use 133% insulation level cable with Grounding through reactance? any calculation?
Thank you
RE: 28 kV XLPE Cable with 133% Insulation Level