1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationOil-filled electrical equipment Sampling of gases and analysis of free and dissolved gases GuidanceBS EN 60567:2011Copyright European Committee for Electrotechnical Standardizati
2、on Provided by IHS under license with CENELECNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-National forewordThis British Standard is the UK implementation of EN 60567:2011. It is identi-cal to IEC 60567:2011. It supersedes BS EN 60567:2005 which is withdrawn.The
3、UK participation in its preparation was entrusted to Technical CommitteeGEL/10, Fluids for electrotechnical applications.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisions of acont
4、ract. Users are responsible for its correct application. The British Standards Institution 2012ISBN 978 0 580 69888 0ICS 17.220.99; 29.035.99; 29.040.10Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of the Stand
5、ardsPolicy and Strategy Committee on 29 February 2012.Amendments issued since publicationAmd. No. Date Text affectedBRITISH STANDARDBS EN 60567:2011Copyright European Committee for Electrotechnical Standardization Provided by IHS under license with CENELECNot for ResaleNo reproduction or networking
6、permitted without license from IHS-,-,-EUROPEAN STANDARD EN 60567 NORME EUROPENNE EUROPISCHE NORM December 2011 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Management Centre: Avenue M
7、arnix 17, B - 1000 Brussels 2011 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60567:2011 E ICS 29.040 Supersedes EN 60567:2005English version Oil-filled electrical equipment - Sampling of gases and analysis of free and dissolve
8、d gases - Guidance (IEC 60567:2011) Matriels lectriques immergs - Echantillonnage de gaz et analyse des gaz libres et dissous - Lignes directrices (CEI 60567:2011) lgefllte elektrische Betriebsmittel Probennahme von Gasen und Analyse freier und gelster Gase Anleitung (IEC 60567:2011) This European S
9、tandard was approved by CENELEC on 2011-11-24. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references conc
10、erning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC m
11、ember into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Gre
12、ece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 60567:2011Copyright European Committee for Electrotechnical Standardization Provided by IHS un
13、der license with CENELECNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-EN 60567:2011 - 2 - Foreword The text of document 10/849/FDIS, future edition 4 of IEC 60567, prepared by IEC/TC 10 “Fluids for electrotechnical applications“ was submitted to the IEC-CENELEC p
14、arallel vote and approved by CENELEC as EN 60567:2011. The following dates are fixed: latest date by which the document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2012-08-24 latest date by which the national standards conflicting
15、with the document have to be withdrawn (dow) 2014-11-24 This document supersedes EN 60567:2005. EN 60567:2011 includes the following significant technical changes with respect to EN 60567:2005: Since the publication of EN 60567:2005, CIGRE TF.D1.01.15 has made progress in several areas of dissolved
16、gas analysis (DGA), notably a) oil sampling, b) laboratory analysis and solubility coefficients of gases in non-mineral oils, c) calibration of the headspace gas extraction method, d) more sensitive detectors for chromatography, e) preparation of air-saturated standards and f) evaluation of gas moni
17、tor readings. These advances are included in EN 60567:2011. Sampling of oil for DGA from oil-filled equipment has been moved from EN 60567 to EN 60475 as reflected in the revised title of this standard. Attention is drawn to the possibility that some of the elements of this document may be the subje
18、ct of patent rights. CENELEC and/or CEN shall not be held responsible for identifying any or all such patent rights. Endorsement notice The text of the International Standard IEC 60567:2011 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibliogr
19、aphy, the following notes have to be added for the standards indicated: 1 ISO/IEC 17025 NOTE Harmonized as EN ISO/IEC 17025. 2 ISO 3675 NOTE Harmonized as EN ISO 3675. BS EN 60567:2011Copyright European Committee for Electrotechnical Standardization Provided by IHS under license with CENELECNot for
20、ResaleNo reproduction or networking permitted without license from IHS-,-,- 3 - EN 60567:2011 Annex ZA (normative) Normative references to international publications with their corresponding European publications The following referenced documents are indispensable for the application of this docume
21、nt. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. Public
22、ation Year Title EN/HD Year IEC 60296 - Fluids for electrotechnical applications - Unused mineral insulating oils for transformers and switchgear EN 60296 - IEC 60475 2011 Method of sampling insulating liquids EN 60475 2011 IEC 60599 - Mineral oil-impregnated electrical equipment in service - Guide
23、to the interpretation of dissolved and free gases analysis EN 60599 - ISO 5725 Series Accuracy (trueness and precision) of measurement methods and results - - ASTM D2780 - Standard Test Method for Solubility of Fixed Gases in Liquids - - BS EN 60567:2011Copyright European Committee for Electrotechni
24、cal Standardization Provided by IHS under license with CENELECNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- 2 60567 IEC:2011 CONTENTS INTRODUCTION . 7 1 Scope . 9 2 Normative references . 9 3 Sampling of gases from gas-collecting (Buchholz) relays 10 3.1 General
25、 remarks 10 3.2 Sampling of free gases by syringe . 10 3.2.1 Sampling equipment 10 3.2.2 Sampling procedure. 11 3.3 Sampling of free gases by displacement of oil . 12 3.4 Sampling of free gases by vacuum 13 3.5 Sampling of oil from oil filled equipment 14 4 Labelling of gas samples 14 5 Sampling, la
26、belling and transferring of oil from oil-filled equipment . 14 5.1 Sampling and labelling of oil 14 5.2 Transfer of oil for DGA analysis . 14 5.2.1 Transfer from oil syringes 14 5.2.2 Transfer from ampoules . 15 5.2.3 Transfer from flexible metal bottles 15 5.2.4 Transfer from glass and rigid metal
27、bottles 15 6 Preparation of gas-in-oil standards . 15 6.1 General remark . 15 6.2 First method: preparation of a large volume of gas-in-oil standard . 15 6.2.1 Equipment . 15 6.2.2 Procedure 16 6.2.3 Calculation 18 6.3 Second method: preparation of gas-in-oil standards in a syringe or a vial 18 6.3.
28、1 Equipment . 19 6.3.2 Procedure 20 7 Extraction of gases from oil 20 7.1 General remarks 20 7.2 Multi-cycle vacuum extraction using Toepler pump apparatus . 21 7.2.1 Toepler pump extraction apparatus 21 7.2.2 Extraction procedure . 24 7.3 Vacuum extraction by partial degassing method 25 7.3.1 Gener
29、al remark . 25 7.3.2 Partial degassing apparatus 25 7.3.3 Extraction procedure . 26 7.4 Stripping extraction method . 26 7.4.1 Stripping apparatus . 26 7.4.2 Outline of procedure 29 7.5 Headspace method . 30 7.5.1 Principle of the method 30 7.5.2 Symbols and abbreviations 30 7.5.3 Headspace extracti
30、on apparatus 31 7.5.4 Headspace extraction procedure . 35 BS EN 60567:2011Copyright European Committee for Electrotechnical Standardization Provided by IHS under license with CENELECNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-60567 IEC:2011 3 7.5.5 Calibration
31、of the headspace extractor 39 8 Gas analysis by gas-solid chromatography . 41 8.1 General remarks 41 8.2 Outline of suitable methods using Table 4 . 42 8.3 Apparatus 42 8.3.1 Gas chromatograph . 42 8.3.2 Columns 44 8.3.3 Carrier gas 44 8.3.4 Detectors . 44 8.3.5 Methanator 44 8.3.6 Cold trap . 44 8.
32、3.7 Integrator and recorder 44 8.4 Preparation of apparatus . 45 8.5 Analysis 45 8.6 Calibration of the chromatograph . 45 8.7 Calculations 46 9 Quality control 46 9.1 Verification of the entire analytical system . 46 9.2 Limits of detection and quantification . 47 9.3 Repeatability, reproducibility
33、 and accuracy 47 9.3.1 General remark . 47 9.3.2 Repeatability . 48 9.3.3 Reproducibility . 48 9.3.4 Accuracy . 48 10 Report of results . 49 Annex A (informative) Correction for incomplete gas extraction in partial degassing method by calculation . 51 Annex B (informative) Mercury-free and shake tes
34、t versions of the standard extraction methods 53 Annex C (informative) Preparation of air-saturated standards 55 Annex D (informative) Correction for gas bubbles in syringes and air gap in rigid bottles 56 Annex E (informative) Procedure for comparing gas monitor readings to laboratory results 57 Bi
35、bliography 58 Figure 1 Sampling of gas by syringe 11 Figure 2 Sampling of free gases by oil displacement 12 Figure 3 Sampling of free gases by vacuum . 13 Figure 4 First method of preparing gas-in-oil standards . 17 Figure 5 Second method for preparing gas-in-oil standards 19 Figure 6 Example of a T
36、oepler pump extraction apparatus . 23 Figure 7 Types of glass strippers . 27 Figure 8 Stainless steel stripper . 28 Figure 9 Schematic arrangement for connecting an oil stripper to a gas chromatograph 29 Figure 10 Schematic representation of headspace sampler 30 BS EN 60567:2011Copyright European Co
37、mmittee for Electrotechnical Standardization Provided by IHS under license with CENELECNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- 4 60567 IEC:2011 Figure 11 Vial filled with water . 32 Figure 12 Revolving table 34 Figure 13 Schematic arrangement for gas chrom
38、atography 43 Figure B.1 Schematic representation of methods in Annex B . 54 Table 1 Information required for gas samples 14 Table 2 Examples of headspace operating conditions 35 Table 3 Headspace partition coefficients at 70 C in mineral insulating oil . 40 Table 4 Examples of gas chromatographic op
39、erating conditions . 41 Table 5 Required limits of detection in oil . 47 Table 6 Examples of accuracy of extraction methods . 49 Table A.1 Examples of solubility coefficients ai(at 25 C) reported by CIGRE TF D1.01.15 . 51 Table C.1 Examples of solubility values of air for different oil types . 55 Ta
40、ble C.2 Examples of temperature variations for oxygen and nitrogen solubility in mineral oil . 55 BS EN 60567:2011Copyright European Committee for Electrotechnical Standardization Provided by IHS under license with CENELECNot for ResaleNo reproduction or networking permitted without license from IHS
41、-,-,-60567 IEC:2011 7 INTRODUCTION Gases may be formed in oil-filled electrical equipment due to natural ageing but also, to a much greater extent, as a result of faults. Operation with a fault may seriously damage the equipment, and it is valuable to be able to detect the fault at an early stage of
42、 development. Where a fault is not severe, the gases formed will normally dissolve in the oil, with a small proportion eventually diffusing from the liquid into any gas phase above it. Extracting dissolved gas from a sample of the oil and determining the amount and composition of this gas is a means
43、 of detecting such faults, and the type and severity of any fault may often be inferred from the composition of the gas and the rate at which it is formed. In the case of a sufficiently severe fault, free gas will pass through the oil and collect in the gas-collecting (Buchholz) relay if fitted; if
44、necessary, this gas may be analysed to assist in determining the type of fault that has generated it. The composition of gases within the bubbles changes as they move through the oil towards the gas-collecting relay. This can be put to good use, as information on the rate of gas production may often
45、 be inferred by comparing the composition of the free gases collected with the concentrations remaining dissolved in the liquid. The interpretation of the gas analyses is the subject of IEC 60599. These techniques are valuable at all stages in the life of oil-filled equipment. During acceptance test
46、s on transformers in the factory, comparison of gas-in-oil analyses before, during and after a heat run test can show if any hot-spots are present, and similarly analysis after dielectric testing can add to information regarding the presence of partial discharges or sparking. During operation in the
47、 field, the periodic removal of an oil sample and analysis of the gas content serve to monitor the condition of transformers and other oil-filled equipment. The importance of these techniques has led to the preparation of this standard, to the procedures to be used for the sampling, from oil-filled
48、electrical equipment, of gases and oils containing gases, and for subsequent analysis. NOTE Methods described in this standard apply to insulating oils, since experience to date has been almost entirely with such oils. The methods may also be applied to other insulating liquids, in some cases with modifications. General caution, health, safety and environmental protection This International Standard does not purport to address all the safety problems associated with its use. It is the responsibility of the user of the standard to establis
