go to the Air-insulated switchgear product page Anonymous asked on Jan 25th, 2015 in Air-insulated switchgear

What do reclosing time mean for a circuit breaker?

Christian Cingolani, Global Product Marketing Manager LTB

ABB's answer

The reclosing time is the interval of time between the energizing of the opening release (e.g. opening coil) and the instant when the contacts touch in all poles during a reclosing cycle. If the differences in operating times (closing and opening time respectively) between poles are small and can be neglected, the following approximative formula can be applied: Reclosing time = Opening time + Arcing time + Dead time + Pre-arcing time

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    Helene Hedlund

    Global Product Manager LTB

    High Voltage Products

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