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Hybrid insulators for a.c. and d.c. high-voltage applications. Definitions, test methods and acceptance criteria Ingestion-build-177197 Classification of wrappers1 Scope This technical specification applies to hybrid insulators for a. c. and d. c. applications consisting of a load bearing insulating solid or hollow core consisting of ceramic or glass, a housing (defined geometry, outside the insulating core) made of polymeric material and end fittings permanently attached to the insulating core. Hybrid insulators covered by this technical specification are intended for use as suspension tension line