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We are going to install 90 MVA transformer in our plant (11/132 KV)For the 11 KV side we have decided to lay XLPE cables as that is only suitable for the site conditions and for the transformer location.
if i select a 400 sqmm 3 core XLPE aluminum cable How many runs we have to lay. The maximum current flow of the cable will be 4100 Amps.
I came to know that the deterioration is less when we lay the cable in Air (i.e on cable trays) instead of under ground.
Some people are advising me to lay single core cable instead of 3 core cable to avoid deterioration due to cable capacitance as three phases are going in the same cable. Can any one clarify this point.
I feel that 3 core, 400 sqmm XLPE, Aluminum armoured cable of 12 runs (4 runs in a tray with spaced apart at a distance equivalent to diameter of cable) in 3 GI trays may be suitable.
Distance between TFR and panel will be 100 mtrs.
Pl verify this and inform corrections.
if i select a 400 sqmm 3 core XLPE aluminum cable How many runs we have to lay. The maximum current flow of the cable will be 4100 Amps.
I came to know that the deterioration is less when we lay the cable in Air (i.e on cable trays) instead of under ground.
Some people are advising me to lay single core cable instead of 3 core cable to avoid deterioration due to cable capacitance as three phases are going in the same cable. Can any one clarify this point.
I feel that 3 core, 400 sqmm XLPE, Aluminum armoured cable of 12 runs (4 runs in a tray with spaced apart at a distance equivalent to diameter of cable) in 3 GI trays may be suitable.
Distance between TFR and panel will be 100 mtrs.
Pl verify this and inform corrections.