Title: Influence of contact contour on breakdown behaviors in vacuum under uniform field
Abstract:We experimentally investigated influence of contact contour on breakdown characteristics in vacuum under uniform field. Four vacuum interrupters are used and their contact contours are designed to obt...We experimentally investigated influence of contact contour on breakdown characteristics in vacuum under uniform field. Four vacuum interrupters are used and their contact contours are designed to obtain effective area S <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">eff</sub> from 211 mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> to 550 mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> . The contact parameters are contact diameter -42.76 mm, contact gap - 6 mm, contact thickness 16 mm and contact material -CuCr50. Basic impulse level (BIL) voltage (1.2times50 mus) voltage is applied. The experimental results show that 50% breakdown voltage U <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">50</sub> decrease 11% from 248 kV to 221 kV when effective area increase from 211 mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> to 550 mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> . O n the other hand, the effective area S <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">eff</sub> has a significant influence on conditioning process. The larger the effective area, the slower the conditioning process.Read More
Publication Year: 2008
Publication Date: 2008-09-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 3
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