GB/T 7602.3-2008Determination of T501 oxidation inhibitor content in transformer oil or turbine oil - Part 3: Infrared spectroscopy method (English PDF)
变压器油、汽轮机油中T501抗氧化剂含量测定法 第3部分：红外光谱法
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
December 30, 2008
Implementation date
October 1, 2009
Scope
GB/T 7602.3-2008 is the English-translated version of 变压器油、汽轮机油中T501抗氧化剂含量测定法 第3部分：红外光谱法.
GB/T 7602.3-2008 is the Chinese standard "Determination of T501 oxidation inhibitor content in transformer oil or turbine oil - Part 3: Infrared spectroscopy method".
Its scope clause reads: This section specifies the determination of transformer oil and turbine oil T501 (2,6- tert-butyl-p-cresol) antioxidant content of IR method.
This section applies to the determination of unused or used transformer oil and turbine oil T501 antioxidant content. Its clauses include method summary; equipment; reagents and materials; preparations.
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Document preview — GB/T 7602.3-2008
National Standard of the People's Republic of China
- ICS
- 75.100
- Classification
- E 38
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 1 Scope
- 2 Normative references
- 3 Method Summary
- 4 Equipment
- 5 Reagents and materials
- 6 Preparations
1 Scope
This section specifies the determination of transformer oil and turbine oil T501 (2,6- tert-butyl-p-cresol) antioxidant content of IR method.
This section applies to the determination of unused or used transformer oil and turbine oil T501 antioxidant content.
2 Normative references
The following documents contain provisions which, through reference in this text, constitute provisions of this part. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
GB/T 7597 Power oil (transformer oil, turbine oil) sampling method
3 Method Summary
This part is the use of transformer oil and turbine oil after the addition of the wave number T501 antioxidant 3650cm-1 (2.74µm)
Appears at the phenolic hydroxyl stretching vibration absorption peak absorbance is proportional to the concentration of the relationship between the T501 and the absorption peak through the standard curve, thereby
Determined percentage of its quality in the oil sample.
The minimum detection limit. 0.005%.
4 Equipment
4.1
infrared spectrophotometer.
4.2 Analytical balance
accuracy 0.0001g.
4.3 liquid-absorbing pool
transparent in 3800cm-1 ~ 3500cm-1 Scope, any material non-selective absorption of the cell window (common
Cell window has KBr, NaCl), the optical path length of 0.3mm ~ 1.0mm (also depending on the instrument status, choose the appropriate path length) of the absorption cell.
4.4
suction ears ball.
4.5 glass syringes
1mL ~ 2mL.
4.6
stirrer.
5 Reagents and materials
5.1 CTC
chemically pure.
Concentrated sulfuric acid 5.3. Density 1.84g/cm3,98%, AR.
5.4 drying clay
clay particle size less than 200 mesh to about 500g, at 120 °C drying 1h, stored in a dryer.
6 Preparations
6.1 oil sample collection
Oil samples were collected in accordance with GB/T 7597 carried out.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
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Related Standards
GB/T 7602.1-2008 — Determination of T501 oxidation inhibitor content in transformer oil or turbine oil - Part 1: Spectrophotometric method
GB/T 7602.2-2008 — Determination of T501 oxidation inhibitor content in transformer oil or turbine oil - Part 2: Liquid chromatography
GB/T 7602.4-2017 — Quantitative determination of T501 oxidation inhibitor content in transformer oil or turbine oil -- Part 4: GC/MS method
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