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Yangzhou Enyuan Electric Co., Ltd

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What are the national standards and regulations for determining the component content of dissolved gases in insulating oil by gas chromatography
Date: 2025-07-31Read: 5

1productIntroduction

The gas chromatography method is used to determine the component content of dissolved gases in insulating oil. It is used by power generation and supply enterprises to determine whether there are latent overheating, discharge and other faults in the oil filled power equipment during operation, in order to ensure the safe and effective operation of the power grid. It is also a means for oil filled electrical equipment manufacturers to conduct factory inspections on their equipment. Adopting the three detector process recommended by the national standard, a single injection can complete the analysis of dissolved gases (including...) in insulating oilH2TheCH4TheC2H4TheC2H6TheC2H2TheCOandCO2)Complete analysis of content.
YE862Special gas chromatograph for transformer oil analysisCompliant with the standards of the People's Republic of ChinaGB/T17623-2017Gas chromatography method for determining the gas content of dissolved gas components in insulating oilGB/T7252-2001Guidelines for Analysis and Determination of Dissolved Gases in Transformer OilDL/T 722-2016The provisions on chromatographic process design in the Guidelines for Analysis and Determination of Dissolved Gases in Transformer Oil.

Equipped with high sensitivity thermal conductivity detector and hydrogen flame ionization detector, as well as a nickel catalyst conversion furnace,YE862Special gas chromatograph for transformer oil analysisCan achieve the analysis of dissolved gas components in transformer oil:H2TheCH4TheC2H4TheC2H6TheC2H2TheCOTheCO2O2TheN2All tests of the optional gas chromatograph have been conducted, and its performance meets the requirements of relevant national standards for gas chromatographs. It is for power generation and supply enterprises to determine whether there are latent overheating, discharge and other faults in the oil filled power equipment during operation, in order to ensure the safe and effective operation of the power grid. It is also a means for oil filled electrical equipment manufacturers to conduct factory inspections on their equipment.

twoTechnical parameters
1One injection, with an injection volume of1 mLIn the oilzuiThe small detection concentration reached (μ g/mL)L/L):

component

H2

CO

CO2

CH4

C2H4

C2H6

C2H2

zuiSmall detection concentration(Ml/l)

2

1

5

0.06

0.06

0.06

0.06

2Environmental temperature:040Stable time at ℃: <30min

Temperature control accuracy:±0.1℃ power:1.9KW

Temperature control range: room temperature+5450℃ external dimensions:660×550×585mm

IIIPerformance characteristics

1 adopt7Inch LCD vertical display, large screen Chinese display, clear and intuitive picture. Can be displayed simultaneously within the same interface10Road temperature control value (column box)12, sampler123, detector123Assist12Waiting for the set temperature value and actual value, and reserving fault alarm location area, time display area, event area, etc

2It can display the temperature, time, events, range rise, stopwatch, and extreme temperature protection values of the instrument, and add status indicator lights, fault alarm lights, etc. on a universal basis, making the system more user-friendly and convenient.

3Having core temperature control development technology, precisePIDThe temperature control system utilizes the characteristics of bus development technology, adopts military grade control chips, and dual over temperature protection for temperature control software and hardware, ensuring the long-term operation, reliability, and durability of the temperature control system

4In addition to the universal injection interface, this machine is also equipped with interface protocol docking to facilitate the installation of automatic injectors and meet expansion requirements such as valve center cutting.

5The carrier gas adopts a two-stage stable voltage and current method, using digital precision diaphragm control valves. Each assembly undergoes strict offline testing to ensure the reproducibility of each instrument's gas path. The special installation process avoids the phenomenon of wear and tear before reaching the customer due to bumps and vibrations during long-distance transportation.

6The gas pipelines used in the instrument are all made of high brightness stainless steel pipelines that are free of cleaning, providing a dry and clean carrier for high-purity gases. Each section of the pipeline is cut neatly through wire cutting technology to make its interface cut. The application of vacuum welding technology breaks the high-temperature sand holes and leakage caused by argon arc welding and silver welding in the past, allowing the instrument to work year-round at high temperatures without being burned out

7The instrument can be equipped with a hydrogen flame detector(FID),Thermal conductivity pool detector(TCD),Electron capture detector(ECD),Flame photometric detector(FPD),Nitrogen and phosphorus detector(NPD), as well as nickel catalyst conversion furnaces, can be equipped with up to three types of detectors per unitFIDThe detector system adopts a quartz nozzle with an integrated collection electrode, and the polarized voltage electrode uses high-temperature resistant stainless steel connectors, which will not burn out even under high temperature conditions and have higher stability. The thermal conductivity pool adopts a right angle installation process, and the pool body and joint are designed to be integrated, making disassembly and assembly easy and convenient for users to maintain.