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During circuit breaking operation, the cylinder strikes downward against the piston to break the connection between the fastened contacts. Consequently, it reduces the amount inside the cylinder, compressing the SF6 inside it. The metallic separation contained in the arc chute acts as an arc separator and it divides the arc into small arcs that increase the voltage required to maintain the arc. As soon as the principle contacts open up, the current will circulate by way of the arcing contacts. The arc sweeps upwards leading to cooling and growing the length of the
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