A process for the blocking and locking in the case of switching operations in electrical switchgear

摘要

Method for reservation and interlocking in connection with the operation of electric switching devices (SDA 1) included in one of a plurality of bays belonging to a switchgear, the control between the bays being performed by means of a communication bus with a computerized serial communication system with one computer in each bay. According to the invention operation of the switching device is allowed to take place only after a number of within-the-bay status checks and external status checks. IMAGE