Preparedby TaskForceMembersof theIEEEWorkingGroupon Non-Ceramic andCompositeInsulatorsforTransmission Lines,LightningandInsulatorSubcommittee.

Thisdocument* combinestheexper- ienceandexpertiseofelectricpowerutilities, man- ufacturers,and researchlaboratoriesintoa single reportthatprovidesminimumtest requirementsfor non-ceramictransmissioninsulators. The require- mentsare dividedintomaterialtestsand insulator designteststhatare neededto assessthe relative meritsof a varietyof possiblematerialsand insul- atordesigns.Thepaperis intendedforuse byelec- tricpowerutilityengineersand insulatormanufac- turersto establishminimummaterialanddesignspec- ificationsfor non-ceramicinsulators. Insulators failingto meet theminimumtest requirements should not be considered forlongtermuse becauseof unsat- isfactorymaterials, design,or both.