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Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
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Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co LtdfiledCriticalToshiba Corp
Priority to JP6730677ApriorityCriticalpatent/JPS543242A/en
Publication of JPS543242ApublicationCriticalpatent/JPS543242A/en
PURPOSE: To determine the grounding fault of a resistance grounding system transmission line which is framed in parallel to an extra-high voltage transmission line without every phases comparison by using a phase discriminating relay and a directional comparison relay.