GB/T 44663-2024 Insulating liquids—Unused modified or blended esters for electrotechnical applications
GB/T 44663-2024 Insulating liquids—Unused modified or blended esters for electrotechnical applications
Basic Information
Scope
This document specifies the classification, performance requirements, and test methods for unused modified ester insulating fluids or unused mixed ester insulating fluids used in electrical applications, as well as their labeling and delivery requirements. This document applies to unused modified ester insulating fluids or mixed ester insulating fluids used as insulating and cooling media in transformers and other electrical equipment. It does not apply to modified ester insulating fluids or mixed ester insulating fluids that contain used insulating fluids in any proportion. unused modified or synthetic esters derived from natural or synthetic base oils, or a mixture of both. This document covers other ester insulating fluids not covered by the standards for natural ester insulating fluids (NB/T 10199) or synthetic ester insulating fluids (GB/T 41632). Since this document involves various types of ester insulating fluids, some performance indicators have a wide range of values. Viscosity is an important performance parameter that affects the design and cooling performance of electrical equipment. Therefore, this document classifies ester insulating fluids based on their kinematic viscosity.