This guide provides technical information related to liquid-immersed power transformers insulated with high-temperature materials. - Guidelines are provided for applying existing qualified high-temperature materials to insulation systems suitable for high-temperature liquid-immersed power transformers. - Recommendations are made regarding the loading of high-temperature liquid-immersed power transformers. - Technical information is provided for insulation-system temperature ratings and test procedures for qualifying new high-temperature materials as they become available. No specific guidance is provided on insulating fluids other than mineral oil. This subject is to be covered in a future revision of this guide once more field experience is available using fluids other than mineral oil in combination with high-temperature solid materials. Purpose This guide is intended as a first step in the direction of standardizing the application of high-temperature insulation systems in transformers using insulation materials such as aramid papers@ aramid transformerboards@ high-temperature enamels@ and hybrid systems that include both high-temperature materials and cellulose materials. It provides technical information for the transformer designer as well as for the transformer user.
IEEE 1276-1997 history
1970IEEE 1276-2020 IEEE Guide for the Application of High-Temperature Insulation Materials in Liquid-Immersed Distribution, Power, and Regulating Transformers
2000IEEE 1276-2000 Guide for the Application of High-Temperature Insulation Materials in Liquid-Immersed Power Transformers
1997IEEE 1276-1997 Guide for the Application of High-Temperature Insulation Materials in Liquid-Immersed Power Transformers