heating of concentric neutral on XLP 13.8KV below elbow

[JoseAngelTec]

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

 

[waross]

Possibly no stress cone or a faulty stress cone?

Bill
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"Why not the best?"
Jimmy Carter

 

[potteryshard]

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.

 

[waross]

Good point, potteryshard.

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