SIST EN 61181:2010/A1:2012
(Amendment)Mineral oil-filled electrical equipment - Application of dissolved gas analysis (DGA) to factory tests on electrical equipment
Mineral oil-filled electrical equipment - Application of dissolved gas analysis (DGA) to factory tests on electrical equipment
This International Standard specifies oil-sampling procedures, analysis requirements and procedures, and recommends sensitivity, repeatability and accuracy criteria for the application of dissolved gas analysis (DGA) to factory testing of new power transformers, reactors and instrument transformers filled with mineral insulating oil when DGA testing has been specified. The most effective and useful application of DGA techniques to factory testing is during the performance of long-term tests, typically temperature-rise (heat run) and overloading tests on power transformers and reactors, also impulse tests on instrument transformers. DGA may also be valuable for over-excitation tests run over an extended period of time. Experience with DGA results, before and after short-time dielectric tests, indicates that DGA is normally less sensitive than electrical and acoustic methods for detecting partial discharges. However, DGA will indicate when these partial discharges become harmful to the insulation and may be detected by inspection.
Getränkte Isolierstoffe - Verwendung der Gasanalyse für gelöste Gase (DGA) als Werksprüfung für elektrische Betriebsmittel
Matériels électriques imprégnés d'huile minérale - Application de l'analyse des gaz dissous (AGD) lors d'essais en usine de matériels électriques
Impregnirani izolacijski materiali - Uporaba analize raztopljenih plinov pri tovarniškem preskušanju električne opreme
Ta mednarodni standard določa postopke za vzorčenje olj ter zahteve in postopke za analizo ter priporoča merila za občutljivost, ponovljivost in natančnost pri uporabi analize raztopljenih plinov (DGA) za tovarniško preskušanje novih impregniranih izolacijskih močnostnih transformatorjev, reaktorjev in instrumentnih transformatorjev, kadar je bilo določeno preskušanje z analizo raztopljenih plinov. Tehnike analize raztopljenih plinov so za tovarniško preskušanje najučinkovitejše in najuporabnejše, kadar se uporabijo za dolgotrajne preskuse, običajno za preskuse močnostnih transformatorjev in reaktorjev s segrevanjem in preobremenitvijo ter sunkovne preskuse instrumentnih transformatorjev. Analiza raztopljenih plinov je lahko pomembna tudi pri preskusih s pretiranim vzbujanjem, ki se izvajajo v daljšem časovnem obdobju. Izkušnje z rezultati analize raztopljenih plinov pred kratkoročnimi dielektričnimi preskusi in po njih kažejo, da je zaznavanje pri analizi raztopljenih plinov običajno slabše kot pri električnih in akustičnih metodah za zaznavanje delnih razelektritev. Vendar analiza raztopljenih plinov kaže, kdaj lahko te delne razelektritve poškodujejo izolacijo, zaznati pa jih je mogoče s pregledom 2.
General Information
Relations
Overview
EN 61181:2007/A1:2012 (IEC 61181:2007/A1:2012) specifies the application of dissolved gas analysis (DGA) to factory tests on mineral oil‑filled electrical equipment. It is a CENELEC adaptation of the IEC document covering procedures for sampling, extraction and laboratory analysis of gases dissolved in insulating oil during production and type/acceptance testing. The 2012 amendment updates normative references, sampling guidance and analysis recommendations to reflect newer IEC publications.
Key Topics
- Scope and purpose: Applies DGA methods specifically to factory tests (type and routine tests) on mineral oil‑filled equipment, not continuous online monitoring.
- Sampling methods and containers: Aligns factory sampling practices with current IEC guidance to ensure representative oil samples for DGA.
- Dissolved gas extraction and analysis: Describes laboratory extraction procedures and chromatographic analysis of dissolved gases; the amendment recommends use of high‑sensitivity capillary columns for improved detection.
- Typical gas generation data: Annex A (updated by the amendment) provides reference ranges of typical gas formation rates during thermal tests for modern mineral oil‑filled power transformers (core‑type, shell‑type and special cases) to help interpret factory test results.
- National conditions and compliance: Includes provisions for national characteristics (Annex ZB); a France‑specific note references CO values during temperature‑rise tests per EN 60076‑2:2011 Annex D.
- Normative references: Replaces and updates key references to IEC 60475:2011 (sampling of insulating liquids) and IEC 60567:2011 (sampling and analysis of free and dissolved gases).
Applications
Who uses EN 61181:2007/A1:2012 and why:
- Manufacturers of transformers, bushings and other mineral oil‑filled equipment - for factory acceptance testing and quality control.
- Independent testing laboratories - to perform standardized DGA for type tests and production checks.
- Utility test engineers and commissioning teams - to verify oil condition and detect incipient faults during factory tests.
- Certification bodies and compliance assessors - to ensure test methods meet recognized international practice.
Practical benefits:
- Provides repeatable, comparable DGA results for acceptance decisions.
- Supports early detection of manufacturing defects (partial discharges, thermal faults, arcing) during controlled tests.
- Improves test reproducibility by standardizing sampling and analytical methods.
Related Standards
- IEC 60475:2011 - Method of sampling insulating liquids
- IEC 60567:2011 - Oil‑filled electrical equipment - Sampling of gases and analysis of free and dissolved gases
- EN 60076‑2:2011 - Power transformers (referenced for national CO guidance in France)
Keywords: dissolved gas analysis, DGA, mineral oil‑filled, factory tests, transformer testing, IEC 60567, IEC 60475, oil sampling, high‑sensitivity capillary columns.
Frequently Asked Questions
SIST EN 61181:2010/A1:2012 is a amendment published by the Slovenian Institute for Standardization (SIST). Its full title is "Mineral oil-filled electrical equipment - Application of dissolved gas analysis (DGA) to factory tests on electrical equipment". This standard covers: This International Standard specifies oil-sampling procedures, analysis requirements and procedures, and recommends sensitivity, repeatability and accuracy criteria for the application of dissolved gas analysis (DGA) to factory testing of new power transformers, reactors and instrument transformers filled with mineral insulating oil when DGA testing has been specified. The most effective and useful application of DGA techniques to factory testing is during the performance of long-term tests, typically temperature-rise (heat run) and overloading tests on power transformers and reactors, also impulse tests on instrument transformers. DGA may also be valuable for over-excitation tests run over an extended period of time. Experience with DGA results, before and after short-time dielectric tests, indicates that DGA is normally less sensitive than electrical and acoustic methods for detecting partial discharges. However, DGA will indicate when these partial discharges become harmful to the insulation and may be detected by inspection.
This International Standard specifies oil-sampling procedures, analysis requirements and procedures, and recommends sensitivity, repeatability and accuracy criteria for the application of dissolved gas analysis (DGA) to factory testing of new power transformers, reactors and instrument transformers filled with mineral insulating oil when DGA testing has been specified. The most effective and useful application of DGA techniques to factory testing is during the performance of long-term tests, typically temperature-rise (heat run) and overloading tests on power transformers and reactors, also impulse tests on instrument transformers. DGA may also be valuable for over-excitation tests run over an extended period of time. Experience with DGA results, before and after short-time dielectric tests, indicates that DGA is normally less sensitive than electrical and acoustic methods for detecting partial discharges. However, DGA will indicate when these partial discharges become harmful to the insulation and may be detected by inspection.
SIST EN 61181:2010/A1:2012 is classified under the following ICS (International Classification for Standards) categories: 29.040.01 - Insulating fluids in general. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 61181:2010/A1:2012 has the following relationships with other standards: It is inter standard links to SIST EN 61181:2010. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase SIST EN 61181:2010/A1:2012 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of SIST standards.
Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2012
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Mineral oil-filled electrical equipment - Application of dissolved gas analysis (DGA) to
factory tests on electrical equipment
Getränkte Isolierstoffe - Verwendung der Gasanalyse für gelöste Gase (DGA) als
Werksprüfung für elektrische Betriebsmittel
Matériels électriques imprégnés d'huile minérale - Application de l'analyse des gaz
dissous (AGD) lors d'essais en usine de matériels électriques
Ta slovenski standard je istoveten z: EN 61181:2007/A1:2012
ICS:
29.040.01 Izolacijski fluidi na splošno Insulating fluids in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN 61181/A1
NORME EUROPÉENNE
May 2012
EUROPÄISCHE NORM
ICS 29.040
English version
Mineral oil-filled electrical equipment -
Application of dissolved gas analysis (DGA) to factory tests on electrical
equipment
(IEC 61181:2007/A1:2012)
Matériels électriques imprégnés d'huile Getränkte Isolierstoffe -
minérale - Verwendung der Gasanalyse für gelöste
Application de l'analyse des gaz dissous Gase (DGA) als Werksprüfung für
(AGD) lors d'essais en usine de matériels elektrische Betriebsmittel
électriques (IEC 61181:2007/A1:2012)
(CEI 61181:2007/A1:2012)
This amendment A1 modifies the European Standard EN 61181:2007; it was approved by CENELEC on 2012-
03-29. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate
the conditions for giving this amendment the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the CEN-CENELEC Management Centre or to any CENELEC member.
This amendment exists in three official versions (English, French, German). A version in any other language
made by translation under the responsibility of a CENELEC member 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, Greece, Hungary, Iceland, Ireland, Italy,
Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia,
Spain, Sweden, Switzerland, Turkey and the United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Management Centre: Avenue Marnix 17, B - 1000 Brussels
© 2012 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61181:2007/A1:2012 E
Foreword
The text of document 10/881/FDIS future edition 1 of IEC 61181:2007/A1, prepared by IEC/TC 10 "Fluids
for electrotechnical applications" was submitted to the IEC-CENELEC parallel vote and approved by
CENELEC as EN 61181:2007/A1:2012.
The following dates are fixed:
(dop) 2012-12-29
• latest date by which the document has
to be implemented at national level by
publication of an identical national
standard or by endorsement
(dow) 2015-03-29
• latest date by which the national
standards conflicting with the
document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject 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 61181:2007/A1:2012 was approved by CENELEC as a
European Standard without any modification.
- 3 - EN 61181:2007/A1:2012
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited appl
...
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