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Electrical insulation systems - Procedures for thermal evaluation - Part 22: Specific requirements for encapsulated-coil model - Wire-wound electrical insulation system (EIS) (IEC 61857-22:2008); German version EN 61857-22:2008
Edition 2009-05

Electrical insulation systems - Procedures for thermal evaluation - Part 31: Applications with a designed life of 5 000 h or less (IEC 61857-31:2017); German version EN 61857-31:2017
Edition 2017-09

Electrical insulation systems - Procedures for thermal evaluation - Part 32: Multifactor evaluation with increased factors during diagnostic testing (IEC 61857-32:2019); German version EN IEC 61857-32:2019
Edition 2021-05

Electrical insulation systems - Procedures for thermal evaluation - Part 33: Multifactor evaluation with increased ageing factors at elevated temperature (IEC 112/605/CDV:2023); German and English version prEN IEC 61857-33:2023
Edition 2024-05

Electrical insulation systems - Thermal evaluation of modifications to an established electrical insulation system (EIS) - Part 1: Wire-wound winding EIS (IEC 61858-1:2014); German version EN 61858-1:2014
Edition 2014-11

Electrical insulation systems - Thermal evaluation of modifications to an established electrical insulation system (EIS) - Part 1: Wire-wound winding EIS; German version EN 61858-1:2014/AC:2024
Edition 2024-09

Electrical insulation systems - Thermal evaluation of modifications to an established electrical insulation system (EIS) - Part 2: Form-wound EIS (IEC 61858-2:2014); German version EN 61858-2:2014
Edition 2014-11

Standards [CURRENT]

DIN EN 61866

Audiovisual systems - Interactive Text Transmission System (ITTS) (IEC 61866:1997); German version EN 61866:1997
Edition 1998-04

Mineral insulating oils - Determination of kinematic viscosity at very low temperatures (IEC 61868:1998); German version EN 61868:1999
Edition 1999-12

Instrument transformers - Part 1: General requirements (IEC 61869-1:2023); German version EN IEC 61869-1:2024
Edition 2025-09

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