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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Priority to JP701576ApriorityCriticalpatent/JPS5290050A/en
Publication of JPS5290050ApublicationCriticalpatent/JPS5290050A/en
PURPOSE: To detect one line earthing by applying D.C. constant voltage ofa constant voltage circuit utilizing the interline voltage of distribution path as a power source, to non-earthed distribution path and current detecting circuit connected in series with the earth and resistor.