I have performed C&DF test on 450MVA auto transformer and getting -ve DF value, what does that mean?

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LABIB KOOLI
05-April-2015

Power Transmission Commissioning Transformer Testing

Question added by Ahsan Elahi Rai , Assistant Manager (testing and commissioning) , NTDC (WAPDA)
Date Posted: 2014/12/09

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by varun v , GRADUATE ENGINEER TRAINEE , NATIONAL TEXTILE COOPERATION

To determine, the deterioration of the condition of insulation due ageing affect.

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