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GB/T 28552-2012: Determination of acid number in transformer oils and turbine oils by BTB method
Status: Valid
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 28552-2012 | English | 169 |
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Determination of acid number in transformer oils and turbine oils by BTB method
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GB/T 28552-2012
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Basic data | Standard ID | GB/T 28552-2012 (GB/T28552-2012) | | Description (Translated English) | Determination of acid number in transformer oils and turbine oils by BTB method | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | E38 | | Classification of International Standard | 75.100 | | Word Count Estimation | 7,716 | | Quoted Standard | GB/T 601 | | Regulation (derived from) | National Standards Bulletin 2012 No. 13 | | 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 | | Summary | This standard specifies the transformer oil, turbine oleic acid value determination method. This standard applies to transformer oil, turbine oleic acid value determination. Determination of acid phosphate ester fire-resistant oil may refer to the use of | GB/T 28552-2012: Determination of acid number in transformer oils and turbine oils by BTB 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.
ICS75.100
E38
National Standards of People's Republic of China
Transformer oil, turbine oleic acid value measurement method (BTB method)
BTBmethod
Issued on. 2012-11-01 2012-06-29 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Table of Contents
Preface Ⅰ
1 Scope 1
2 Normative references 1
3 Summary of Method 1
4 1 instrument
5 Reagent 1
6 Test Procedure 1
7 Results Calculation 2
8 Precision 2
9 Results
(Informative) Preparation of standard solution of potassium hydroxide in ethanol Appendix A 3
Foreword
This standard rule according to GB/T 1.1-2009 given draft.
The standard proposed by China Electricity Council.
This standard by the National Standardization Technical Committee of Chemical Electrical (SAC/TC322) centralized.
This standard was drafted. Xi'an Thermal Power Research Institute Co., Ltd.
The main drafters of this standard. Xiaoxiu Yuan, Feng Liping, Meng Yuchan, Zhaorui Ju.
Transformer oil, turbine oleic acid value measurement method (BTB method)
1 Scope
This standard specifies the oil, oleic acid value determination turbine transformer.
This standard applies to transformer oil, turbine oleic measured values. Determination of acid phosphate ester fire-resistant oil can refer to the use of this method.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated edition applies to this article
Member. For undated references, the latest edition (including any amendments) applies to this document.
Preparation of GB/T 601 standard titration solution of chemical reagent
3 Method Summary
This method is the use of ethanol extract oil boiling acidic components in the sample, and then potassium hydroxide in ethanol standard solution titration and 1g
Quality oil sample acidic components of potassium hydroxide required (mg) is the oil sample acid value.
4 Instrument
4.1 Erlenmeyer flask.200mL ~ 300mL.
4.2 spherical or straight reflux condenser. about 300mm.
4.3 microburette. 1mL ~ 2mL, indexing of 0.02mL.
4.4 constant temperature water bath. room temperature ~ 90 ℃.
4.5 Analytical balance. accuracy 0.0001g.
5 Reagents
5.1 potassium hydroxide in ethanol standard solution. according to the standard GB/T 601 dubbed 0.03mol/L ~ 0.05mol/L potassium hydroxide in ethanol standard
Solution.
5.2 bromine thyme phenol blue (BTB) indicator. 0.5g of bromine thyme phenol blue (weighing accuracy of 0.01g) placed in a beaker, add
100mL of anhydrous ethanol, then with 0.1mol/L ethanolic potassium hydroxide solution to a pH of 5.0.
5.3 ethanol. AR.
NOTE. The standard solution of potassium hydroxide in ethanol should not exceed three months, save when ethanol standard solution of potassium hydroxide precipitate or yellow, they should be clear liquid.
Calibrated before use.
6 Test procedure
6.1 with a clean, dry Erlenmeyer flask weighed oil sample 8g ~ 10g (weighing accuracy of 0.01g). If the tested oil sample acid value is large, can be reduced, as appropriate,
Less oil sample sample weight.
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