Tiêu chuẩn quốc tế

• Số hiệu / Standard Number: ASTM D4652-20
• Năm ban hành / Publication date: 2020
• Tình trạng / Status: A - Còn hiệu lực
• Tên tiếng Anh / Title in English: Standard Specification for Silicone Liquid Used for Electrical Insulation
• Chỉ số phân loại Quốc tế (ICS) / By field: 29.035.20 - Vật liệu cách điện nhựa và cao su; 71.100.55 - Silicon
• Số trang / Page: 2

Phạm vi áp dụng / Scope of standard

1.1 This specification covers silicone liquid for use in transformers, capacitors, and electronic assemblies as an insulating or cooling medium, or both.

1.2 Silicone liquid covered by this specification is polydimethylsiloxane having a nominal viscosity of 50 mm²/s at 25°C and a fire point of 340°C or greater. This specification applies only to new silicone liquid. Information on in-service maintenance testing is available in appropriate guides.2

1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.