prEN IEC 61857-51

Electrical insulation systems - Procedures for thermal evaluation - Part 51: Specific requirements for electrical insulation systems in dry-type resin-encapsulated high-voltage windings using AC dielectric breakdown as diagnostic prEN IEC 61857-51

Current stage: 10.99 New project approved Nov 17, 2025

Originator: CENELEC

Owner: CLC/SR 112 Evaluation and qualification of electrical insulating materials and systems (to be defined)

Type: European Norm

IN_DEVELOPMENT
prEN IEC 61857-51
10.99 New project approved
Nov 17, 2025

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