EARTHING DEVICE FOR ISOLATED AERIAL POWER LINES WITH VOLTAGE OF UP TO 3 kV Russian patent published in 2017 - IPC H01R4/66 

FIELD: electricity.

SUBSTANCE: invention relates to fixed earthing devices up to 3 kV for stationary earthing of isolated aerial power lines up to 0.4 kV. The device consists of a cabinet 1, an electric circuit diagram (three phases 2, 3, 4 and one neutral 5), an earth lead 6, cable terminals 7, loop lines 8, a shunt 9 for connecting the cabinet 1 with the earth lead 6 and a switching equipment (a switch 10 and a manual drive 11 with a handle 12). The cabinet 1 is stationary fixed to the rack 13 of the insulated aerial power line support by means of an attachment unit. Up to the top 17 of the rack 13 the loop lines 8 are fixed vertically on it and their ends are secured to the insulated line wires 19 by means of connecting and branch terminals 20 and 21. The earth lead 6 connected by the shunt 9 to the electric circuit diagram of the cabinet 1 is an electrode, one segment of which extends along the buried portion 22 of the rack 13, and the other segment extends parallel to the ground level 23.

EFFECT: simple and accessible in installation and provides a high level of electrical safety.

3 cl, 3 dwg