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heating of concentric neutral on XLP 13.8KV below elbow

heating of concentric neutral on XLP 13.8KV below elbow

heating of concentric neutral on XLP 13.8KV below elbow

(OP)
How's everyone ? we have a situation where we took thermoimages of the elbows on the high side of a pad mounted transformer and we detected a small spot of heat on the xlp cable right where the jacket ends and the shield wires fold back can anyone give me an answer to why this might be

RE: heating of concentric neutral on XLP 13.8KV below elbow

Possibly no stress cone or a faulty stress cone?  

Bill
--------------------
"Why not the best?"
Jimmy Carter

RE: heating of concentric neutral on XLP 13.8KV below elbow

What level of neutral current is on each cable?  Because the neutral strands are doubled over at the fold, any neutral currents will cause twice the heating at that point.

RE: heating of concentric neutral on XLP 13.8KV below elbow

Good point, potteryshard.

Bill
--------------------
"Why not the best?"
Jimmy Carter

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