The site you quote says:
“The inadequacy of DC testing in determining the cables' AC breakdown strength, the danger of programming the cables with faults when DC and impulse testing at unnecessarily high voltages, …”
“At one time we tested 13kv cables at 45kv.”
I wouldn’t test XLP at this voltage unless directed by an engineer or manager and only then if I had the orders in writing signed by that engineer or manager.
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