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Hitachi Ltd
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Hitachi Ltd
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Application filed by Hitachi LtdfiledCriticalHitachi Ltd
Priority to JP9511777ApriorityCriticalpatent/JPS5430449A/en
Publication of JPS5430449ApublicationCriticalpatent/JPS5430449A/en
PURPOSE: To decide whether trouble is due to undervoltage or to fusing by making induced voltage take place at the other secondary windings when a pair of primary windings suffer fusing.