Prepare a trial use guide for General Requirements for Liquid-Immersed Power Transformers utilizing High Temperature Solid Insulating Materials. To define consensus of existing practices developed from the use of high temperature insulating materials in as yet unstandardized liquid-filled power transformers. New IEEE Standard - Superseded. Technical information is provided related to liquid-immersed power transformers insulated with high-temperature materials.Guidelines for applying existing qualified high- temperature materials to certain insulation systems,recommendations for loading high- temperature liquid-immersed power transformers,and technical information on insulation-system temperature ratings and test procedures for qualifying new high-temperature materials are included.