DISCHARGER, HV INSULATOR WITH DISCHARGER AND HV AERIAL POWER LINE USING SUCH INSULATOR Russian patent published in 2012 - IPC H01T4/16 H02B13/00 H02G7/22 

FIELD: electricity.

SUBSTANCE: discharger for lightning protection of equipment elements or aerial power line contains an insulation body made of a dielectric and a multi-electrode system consisting of m (m≥5) electrodes mechanically related to the insulation body and positioned between the ends thereof so that to enable generation of an eclectic discharge between adjacent electrodes under the impact of lightning overvoltage. The electrodes are positioned inside the insulator body separated from its surface with an insulation layer. Arranged between adjacent electrodes are discharge chambers reaching the insulation body surface. At least several discharge chambers consist of two interconnected parts; the first parts of the discharge chambers the electrodes project into are designed as holes within the insulation body while the second parts of the discharge chambers, connected to the first ones, are designed as slots on the insulation body surface. Additionally disclosed are an insulator containing the said discharge device and an HV aerial power line using this insulator.

EFFECT: reliability and manufacturability improvement, service life extension and discharger construction simplification.

14 cl, 2 dwg