Nanosecond Breakdown Characteristics of <i>C</i><sub>4</sub><i>F</i><sub>7</sub><i>N</i> and Various Mixtures at Pressures Above 1 Atmosphere in Comparison with <i>SF</i><sub>6</sub>

Nanosecond Breakdown Characteristics of <i>C</i><sub>4</sub><i>F</i><sub>7</sub><i>N</i> and Various Mixtures at Pressures Above 1 Atmosphere in Comparison with <i>SF</i><sub>6</sub>

This report evaluates the pulsed breakdown performance of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>C</mi><mn>4</mn></msub><msub><mi>F</mi...

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Bibliographic Details
Main Authors:	Luke Silvestre, Jakob Matthies, Luke Boswell, Jacob Stephens, James Dickens, Andrew Young, Andreas Neuber
Format:	Article
Language:	English
Published:	MDPI AG 2024-12-01
Series:	Applied Sciences
Subjects:	<i>C</i><sub>4</sub><i>F</i><sub>7</sub><i>N</i> <i>SF</i><sub>6</sub> Novec<sup><i>TM</i></sup> 4710 pulsed breakdown dielectric strength electrical breakdown
Online Access:	https://www.mdpi.com/2076-3417/14/23/11268
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Summary:	This report evaluates the pulsed breakdown performance of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>C</mi><mn>4</mn></msub><msub><mi>F</mi><mn>7</mn></msub><mi>N</mi></mrow></semantics></math></inline-formula> under a 6.8 kV/ns voltage excitation. The pulsed dielectric strength of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>C</mi><mn>4</mn></msub><msub><mi>F</mi><mn>7</mn></msub><mi>N</mi></mrow></semantics></math></inline-formula> is compared to <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>S</mi><msub><mi>F</mi><mn>6</mn></msub></mrow></semantics></math></inline-formula> in the same experimental setup, and it is found that <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>C</mi><mn>4</mn></msub><msub><mi>F</mi><mn>7</mn></msub><mi>N</mi></mrow></semantics></math></inline-formula> concentrations of 50% or greater are required to achieve a dielectric strength greater than or equal to <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>S</mi><msub><mi>F</mi><mn>6</mn></msub></mrow></semantics></math></inline-formula>. Pure <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>C</mi><mn>4</mn></msub><msub><mi>F</mi><mn>7</mn></msub><mi>N</mi></mrow></semantics></math></inline-formula> demonstrated higher electric field hold-off for longer time periods and less statistical variance under pulsed conditions when compared to <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>S</mi><msub><mi>F</mi><mn>6</mn></msub></mrow></semantics></math></inline-formula>. Mixtures of 50%<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>C</mi><mn>4</mn></msub><msub><mi>F</mi><mn>7</mn></msub><mi>N</mi></mrow></semantics></math></inline-formula> with <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mi>N</mi><mn>2</mn></msub></semantics></math></inline-formula> or <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>C</mi><msub><mi>O</mi><mn>2</mn></msub></mrow></semantics></math></inline-formula> as buffer gases showed no appreciable difference in pulsed dielectric strength.
ISSN:	2076-3417