ARC ENERGY REDUCTION METHOD AND APPARATUS FOR MULTI-PHASE SWITCHING DEVICES
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United States of America Patent
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Dec 21, 2015
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Dec 21, 2015
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A three phase switching device and method for reducing arc energy and contact erosion during the opening and closing of electrical contacts, the device having one electromagnet and one armature. The device and method permits the closing of all three phases at calculated target points immediately prior to their current zero crossing by controlling the velocity at which the armature travels during the opening and closing process.
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