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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Priority to JP9543377ApriorityCriticalpatent/JPS5429032A/en
Publication of JPS5429032ApublicationCriticalpatent/JPS5429032A/en
Maintenance And Inspection Apparatuses For Elevators
(AREA)
Abstract
PURPOSE: To dosconnect only a protector for the fault circuit when in a generation of short-circuit fault, by inhibiting a reverse current cut-off operation of the protector, when a regenerative power from elevator motor is generated with a total sum of electric quantity passing each load trunk line becoming reverse.