Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Engineering Co Ltd
Hitachi Ltd
Original Assignee
Hitachi Engineering Co Ltd
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Engineering Co Ltd, Hitachi LtdfiledCriticalHitachi Engineering Co Ltd
Priority to JP10039977ApriorityCriticalpatent/JPS5435343A/en
Publication of JPS5435343ApublicationCriticalpatent/JPS5435343A/en
PURPOSE: To make a desision correctly operable even when in a bridging made between buses by a disconnector, by means of providing a circuit for selecting a range of bus protection with a circuit storing in memory the operation of "IN" when handling an operational switch of the disconnector.