Protective device

Details Protective device Protective device

H - Electricity

02

H

317/24

H02H 9/00 (2006.01) H01C 1/02 (2006.01) H01C 7/12 (2006.01)

Patent

CA 1105550

ABSTRACT OF THE DISCLOSURE The invention provides a protective device for affording protection from abnormal voltages such as are caused by lightning. The device comprises an earthing cylindrical metallic casing, an electrode or conductive substrate which is disposed in the direction of the axis of the metallic casing, an outwardly extending insulating pipe disposed between the metallic casing and the electrode or the conductive substrate, and a plurality of non- linear resistors which are disposed in said insulating pipe wherein said non-linear resistors are respectively connected so as to be substantially similar to the potential distribution in said metallic casing.

302740

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