DEVICE FOR CONTINUOUS MONITORING OF AVAILABILITY AND QUALITY OF EARTHING OF ELECTRIC EQUIPMENT Russian patent published in 2016 - IPC H02H3/14 

FIELD: electronic equipment.

SUBSTANCE: device comprises an input unit consisting of two power contacts for connection with phase and zero wires of two-wire network and a contact for connection with the grounding circuit of electric equipment, analyzing electric circuit containing relay, as well as output unit. Analyzing electric circuit comprises a processor, current transformer, ballast resistor and relay, power contact of the phase conductor is connected to the input of current transformer, the output of which is connected to the input of ballast resistors, the output of which is connected to the input relay zero wire and the input relay earthing wire, whose outputs are connected with power contact for connection with neutral wire and with contact for connection with earthing wire, note here that two outputs of current transformer are connected to the processor, whose outputs are connected to the control contact relay zero wire, with the control contact relay earthing wire to the control contact relay switching off equipment, with output unit with power contacts for control of electric equipment.

EFFECT: higher reliability and safety of electric equipment, as well as improved electrical safety of equipment users by means of continuous automatic monitoring of equipment availability and grounding.

2 cl, 1 dwg