Arc extinction refers to the process of stopping or extinguishing an electric arc that forms between two conductive surfaces in high-voltage systems
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As these contacts separate, they create a gap, and the intense current flow causes a rapid increase in temperature.
Understanding this, we explore two ways to achieve arc extinction - separating the contacts to break the potential difference or deionizing the arc path.
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1. High resistance method 2. Low resistance method or current zero method 3. Artificial current zero method.
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Exclusive to AC circuits, the low resistance method aims to maintain a low arc resistance until the current reaches zero.
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For HVDC switching devices, a unique approach is needed due to the absence of natural current zeroes in DC circuits.
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Arc extinction techniques are the unsung heroes of electrical systems, ensuring safety, equipment protection, and reliability.
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1. Higher initial costs and ongoing maintenance expenses. 2. Increased complexity in system design and operation.
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