Polymeric weathershed surge arrester and method

Details Polymeric weathershed surge arrester and method Polymeric weathershed surge arrester and method

H - Electricity

01

T

H01T 4/04 (2006.01)

Patent

CA 2247925

An elastomeric surge arrester housing (20) includes a sleeve having a tubular core (30) and radiating sheds (36). The sleeve is molded in a first configuration and, when the core (30) is radially stretched, assumes a second configuration in which the sheds (36) assume a downwardly extending configuration. The sheds (36), in the second configuration, include an upper surface having a generally frustoconical shape. The housing (20) may be made using conventional molding techniques, but requires substantially less material if the housing (20) were molded directly into the second configuration.

Un logement (20) en élastomère pour limiteur de surtension comprend une gaine comportant un coeur tubulaire (30) et des cloches radiantes (36). La gaine est moulée de façon à prendre une première configuration et, quand le coeur (30) est étiré radialement, elle prend une seconde configuration dans laquelle les cloches (36) s'étendent vers le bas. Les cloches (36), dans la seconde configuration, présentent une surface supérieure de forme générale tronconique. Le logement (20) peut être fabriqué selon les techniques de moulage classiques, mais nécessite sensiblement moins de matériau s'il est moulé de façon à prendre directement la second configuration.

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