GB/T 7602.4-2017 English PDF

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GB/T 7602.4-2017: Quantitative determination of T501 oxidation inhibitor content in transformer oil or turbine oil -- Part 4: GC/MS method
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 7602.4-2017	119	Add to Cart	3 days	Quantitative determination of T501 oxidation inhibitor content in transformer oil or turbine oil -- Part 4: GC/MS method	Valid

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Basic data

Standard ID: GB/T 7602.4-2017 (GB/T7602.4-2017)
Description (Translated English): Quantitative determination of T501 oxidation inhibitor content in transformer oil or turbine oil -- Part 4: GC/MS method
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: E38
Classification of International Standard: 75.100; 29.040
Word Count Estimation: 6,687
Date of Issue: 2017-11-01
Date of Implementation: 2018-05-01
Regulation (derived from): National Standard Announcement 2017 No. 29
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China

GB/T 7602.4-2017: Quantitative determination of T501 oxidation inhibitor content in transformer oil or turbine oil -- Part 4: GC/MS method

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Quantitative determination of T501 oxidation inhibitor content in transformer oil or turbine oil-Part 4. GC/MS method ICS 75.100; 29.040 E38 National Standards of People's Republic of China Transformer oil, turbine oil T501 Antioxidant content assay Part 4. GC/MS Quantitative determination of T501oxidation inhibitor Part 4.GC/MSmethod (IEC 60666.2010, Detection and determination of specific additivesinmineralinsulatingoils, NEQ) 2017-11-01 Release.2018-05-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released Directory Preface Ⅰ 1 Scope 1 2 Normative references 1 3 Method summary 1 4 reagents and materials 1 5 instruments 1 Preparatory work 2 7 test procedures 3 8 Results Calculation 3 9 precision 3 10 Test Report 3

Foreword

GB/T 7602 "transformer oil, turbine oil T501 antioxidant content assay" is divided into four parts. --- Part 1. Spectrophotometry; --- Part 2. Liquid chromatography; --- Part 3. Infrared spectroscopy; --- Part 4. GC/MS. This section GB/T 7602 Part 4. This section drafted in accordance with GB/T 1.1-2009 given rules. This section uses the redrafted law reference IEC 60666.2010 "Qualitative and quantitative detection of specific additives in mineral insulating oil" in 3.4 The degree of conformity with IEC 60666.2010 is not equivalent. This part is proposed by China Electricity Council. This part of the National Electrochemical Standardization Technical Committee (SAC/TC322) centralized. This section drafted unit. Guangdong Power Grid Co., Ltd. Electric Power Research Institute, China Petroleum Lanzhou Lubricant Research and Development Center, West An Thermal Research Institute Co., Ltd., Guangzhou Power Supply Bureau Electric Power Research Institute Ltd., Guangdong Power Grid Co., Ltd. Zhuhai Power Supply Bureau. The main drafters of this section. Su Wei, Meng Yuchan, Qian Yihua, Zhang Li, Rao Zhangquan, Huang Dan, Chen Xiao country, Yang Zhen Yang, Ma Shujie, Mo Wenxiong, Wan Caiyun, Liu Mengna. Transformer oil, turbine oil T501 Antioxidant content assay Part 4. GC/MS

1 Scope

GB/T 7602 provisions of this part of the transformer oil, turbine oil added T501 (2,6-di-tert-butyl p-cresol) antioxidant containing Quantitative gas chromatography - mass spectrometry method. This section applies to unused and in operation transformer oil, turbine oil T501 antioxidant content determination.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this article Pieces. For undated references, the latest edition (including all amendments) applies to this document. Electric power oil (mineral insulating oil, turbine oil) sampling method

3 Method summary

This section uses the T501 antioxidants after the transformer oil and turbine oil mass spectrum 205,220 signal peaks appear, and The peak intensity of this signal is proportional to the concentration of T501. By plotting the standard curve, the T501 in transformer oil and turbine oil Content, the results with the concentration (%) said.

4 reagents and materials

Iso-octane. Analytical pure. 4.2 2,6-Di-tert-butyl-p-cresol (DBPC, T501). Analytical purity. 4.3 Dimethyl Phthalate (DMP). Analytical purity. 4.4 Blank oil T501-free mineral insulating oil or turbine oil. 4.5 syringe filter membrane .0.45μm, PTFE material. 4.6 syringe .2.5 mL. 4.7 centrifuge tube .50mL. 4.8 Helium - Purity not less than 99.99%.

5 instruments

5.1 gas chromatograph 5.1.1 injection device. With the sample vaporization, diversion and collection of residual oil function. 5.1.2 Capillary column .5% phenylpolysiloxane and 95% methylpolysiloxane stationary phase, length 30m, inner diameter 0.25mm, film thickness 0.25 μm. ......

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