IEC 62770:2013
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Fluids for electrotechnical applications - Unused natural esters for transformers and similar electrical equipment
Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users
08-10-2024
English - French, Spanish, Castilian
19-11-2013
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FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 Properties, their significance and
test methods
5 Classification, identification, general delivery
requirements and sampling
Annex A (normative) - Summary of the test method
for evaluating oxidation stability of unused
natural esters
Annex B (informative) - Specifications of low-viscosity
insulating fluids derived from natural esters
Bibliography
IEC 62770:2013 describes specifications and test methods for unused natural esters in transformers and similar oil-impregnated electrical equipment in which a liquid is required as an insulating and heat transfer medium. Natural esters with additives are within the scope of this standard. Because of their different chemical composition, natural esters differ from insulating mineral oils and other insulating fluids that have high fire points, such as synthetic esters or silicone fluids. Natural, ester-derived insulating fluids with low viscosity have been introduced but are not covered by this standard. Pertinent properties of such fluids are given in Annex B. This standard is applicable only to unused natural esters. Reclaimed natural esters and natural esters blended with non-natural esters fluids are beyond the scope of this standard.
| Committee |
TC 10
|
| DevelopmentNote |
Stability date: 2019. (11/2013)
|
| DocumentType |
Standard
|
| Pages |
34
|
| PublisherName |
International Electrotechnical Committee
|
| Status |
Superseded
|
| SupersededBy |
| Standards | Relationship |
| NF EN 62770 : 2014 | Identical |
| NBN EN 62770 : 2014 | Identical |
| NEN EN IEC 62770 : 2014 | Identical |
| PN EN 62770 : 2014 | Identical |
| DIN EN 62770 : 2014 | Identical |
| VDE 0370-70 : 2014 | Identical |
| BIS IS 16659 : 2017 | Identical |
| UNE-EN 62770:2014 | Identical |
| BS EN 62770:2014 | Identical |
| CEI EN 62770 : 2014 | Identical |
| EN 62770:2014 | Identical |
| SN EN 62770:2014 | Identical |
| I.S. EN IEC 61125:2018 | INSULATING LIQUIDS - TEST METHODS FOR OXIDATION STABILITY - TEST METHOD FOR EVALUATING THE OXIDATION STABILITY OF INSULATING LIQUIDS IN THE DELIVERED STATE |
| IEC 60076-7:2018 | Power transformers - Part 7: Loading guide for mineral-oil-immersed power transformers |
| IEC 61125:2018 | Insulating liquids - Test methods for oxidation stability - Test method for evaluating the oxidation stability of insulating liquids in the delivered state |
| EN IEC 61125:2018 | Insulating liquids - Test methods for oxidation stability - Test method for evaluating the oxidation stability of insulating liquids in the delivered state |
| I.S. EN 60079-6:2015 | EXPLOSIVE ATMOSPHERES - PART 6: EQUIPMENT PROTECTION BY LIQUID IMMERSION 'O' |
| IEC 60079-6:2015 | Explosive atmospheres - Part 6: Equipment protection by liquid immersion "o" |
| UNE-EN 60079-6:2016 | Explosive atmospheres - Part 6: Equipment protection by liquid immersion "o" |
| BS EN IEC 61125:2018 | Insulating liquids. Test methods for oxidation stability. Test method for evaluating the oxidation stability of insulating liquids in the delivered state |
| BS EN 60079-6:2007 | Explosive atmospheres Equipment protected by oil immersion \'o\' |
| IEEE C57.155-2014 | IEEE Guide for Interpretation of Gases Generated in Natural Ester and Synthetic Ester-Immersed Transformers |
| EN 60079-6:2015 | Explosive atmospheres - Part 6: Equipment protection by liquid immersion "o" |
| ISO 3016:1994 | Petroleum products Determination of pour point |
| ISO 2719:2016 | Determination of flash point — Pensky-Martens closed cup method |
| IEC 61125:1992 | Unused hydrocarbon based insulating liquids - Test methods for evaluating the oxidation stability |
| ISO 3675:1998 | Crude petroleum and liquid petroleum products Laboratory determination of density Hydrometer method |
| IEC 61039:2008 | Classification of insulating liquids |
| IEC 60422:2013 | Mineral insulating oils in electrical equipment - Supervision and maintenance guidance |
| IEC 60156:1995 | Insulating liquids - Determination of the breakdown voltage at power frequency - Test method |
| IEC 60050-212:2010 | International Electrotechnical Vocabulary (IEV) - Part 212: Electrical insulating solids, liquids and gases |
| IEC 60076-14:2013 | Power transformers - Part 14: Liquid-immersed power transformers using high-temperature insulation materials |
| IEC 62535:2008 | Insulating liquids - Test method for detection of potentially corrosive sulphur in used and unused insulating oil |
| IEC 60475:2011 | Method of sampling insulating liquids |
| IEC 61100:1992 | Classification of insulating liquids according to fire-point and net calorific value |
| IEC 61099:2010 | Insulating liquids - Specifications for unused synthetic organic esters for electrical purposes |
| IEC 61868:1998 | Mineral insulating oils - Determination of kinematic viscosity at very low temperatures |
| ASTM D 1275 : 2015 | Standard Test Method for Corrosive Sulfur in Electrical Insulating Liquids |
| IEC 60296:2012 RLV | Fluids for electrotechnical applications - Unused mineral insulating oils for transformers and switchgear |
| ISO 12185:1996 | Crude petroleum and petroleum products — Determination of density — Oscillating U-tube method |
| IEC 60050-421:1990 | International Electrotechnical Vocabulary (IEV) - Part 421: Power transformers and reactors |
| IEC 62697-1:2012 | Test methods for quantitative determination of corrosive sulfur compounds in unused and used insulating liquids - Part 1: Test method for quantitative determination of dibenzyldisulfide (DBDS) |
| IEC 60666:2010 | Detection and determination of specified additives in mineral insulating oils |
| IEC 61620:1998 | Insulating liquids - Determination of the dielectric dissipation factor by measurement of the conductance and capacitance - Test method |
| IEC 60814:1997 | Insulating liquids - Oil-impregnated paper and pressboard - Determination of water by automatic coulometric Karl Fischer titration |
| IEC 60247:2004 | Insulating liquids - Measurement of relative permittivity, dielectric dissipation factor (tan d) and d.c. resistivity |
| IEC 61619:1997 | Insulating liquids - Contamination by polychlorinated biphenyls (PCBs) - Method of determination by capillary column gas chromatography |
| IEC 61198:1993 | Mineral insulating oils - Methods for the determination of 2-furfural and related compounds |
| IEEE C57.147-2008 | IEEE Guide for Acceptance and Maintenance of Natural Ester Fluids in Transformers |
| IEC 62021-3:2014 | Insulating liquids - Determination of acidity - Part 3: Test methods for non-mineral insulating oils |
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