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In a previous paper by the same authors, a new method was proposed for the estimation of time to failure percentiles and life fraction lost in the so-called “Extension of Prequalification (EQ) test” according to CIGRE TBs 303. On these grounds, an alternative to the EQ test was proposed, referred to as “Improved Extension of Qualification (IEQ) test”, thereby taking into account the electrothermal...
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