DEVICE FOR PROTECTIVE DISCONNECTION OF ELECTRIC INSTALLATION FROM ALTERNATING CURRENT MAINS Russian patent published in 2012 - IPC H02H3/16 H02H5/12 

FIELD: electricity.

SUBSTANCE: device contains measurement module, consisting of direct current source, the common bus of which is connected with common bus of monitored electric installation. In parallel to direct current source, resistance voltage divider is included the middle lead of which is connected with threshold element input and connected to insulation section of monitored electric installation conductor. Via switching element, the electric installation is connected to alternating current mains. The element or its inputs are connected respectively with outputs of threshold element and module of motion detection in electric installation protection zone, element output is connected with control input of switching element, operating modes setting inputs of measurement module and module of motion detection in electric installation protection zone are connected to transmit-receive module connected with external monitoring system via communication line.

EFFECT: electric installation reliability and safety improvement.

1 dwg