METHOD TO ENSURE ELECTRICAL SAFETY DURING ROUTINE SWITCHING AT POWER FACILITIES Russian patent published in 2015 - IPC H01H9/00 

FIELD: electricity.

SUBSTANCE: application: in electrical engineering. According to the method during routine switching at power facilities positions of switching devices are indentified, the above positions are transmitted through a radio channel, the Boolean expression is formed for each switching device and power supply is fed to a block lock of the switching device drive at a true value of the Boolean expression. At that data about the position of the functionally related switching devices are accumulated at locations of their drives at local points, data transfer from the local point is made only with a request of the control room, permit for power supply delivery to the block lock is transmitted from the control room through the radio channel, whereat power supply of the block locks is made from in-built self-contained sources.

EFFECT: increasing the operational reliability of the magnetic lock and reducing costs for installation, start-up and commissioning.

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