T/CES 047-2020 The technical specifications for determining dissolved gases in insulating oil using helium ion gas chromatography

Scope

Scope: The standard specifies the determination method of the content of dissolved gas components (including hydrogen, methane, ethane, ethylene, acetylene, carbon monoxide, carbon dioxide, etc.) in insulating oil by helium ionization gas chromatography. The determination of gases such as sulfur hexafluoride dissolved in insulating oil and free gases in oil-filled electrical equipment can refer to this standard for the analysis of component content. Main technical content: This standard specifies the determination method of the content of dissolved gas components (including hydrogen, methane, ethane, ethylene, acetylene, carbon monoxide, carbon dioxide, etc.) in insulating oil by helium ionization gas chromatography. The determination of gases such as sulfur hexafluoride dissolved in insulating oil and free gases in oil-filled electrical equipment can refer to this standard for the analysis of component content. The standard consists of 10 chapters, and the main structure and content of the standard are as follows: Chapter 1 "Scope", mainly explaining the main content and scope of application of the standard. Chapter 2 "Normative References", lists three national standards referenced by this standard. Chapter 3 "Terms and Definitions", defines the main terms applicable to this standard. Chapter 4 "Method Outline", mainly briefly introduces the basic principle of the method. Chapter 5 "Sample Collection", due to the special requirements for sample collection in the detection of dissolved gas in insulating oil, this section mainly regulates the collection of samples. Chapter 6 "Instrumentation and Materials", specifies the instrumentation and materials used for the determination of the content of dissolved gas in insulating oil by helium ionization gas chromatography. Chapter 7 "Minimum Detection Sensitivity", specifies the minimum detection sensitivity of the eight gases dissolved in insulating oil. Chapter 8 "Preparation of Degassing Devices", regulates the prepar

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