IEEE/IEC 65700-19-03-2025

Anotace textu normy IEEE/IEC 65700-19-03-2025 :

Revision Standard - Active.

This content has been transferred from the main text, since todays predominant bushing technology does not suffer from flashover during conditions of uneven wetting, in comparison to the earlier used ceramic insulators. Todays outdoor bushings in HVDC applications are made with composite insulators with silicon sheds with well proven hydrophobicity.

Furthermore, there exist no verified test method with sufficient reproducibility between different laboratories. It is also difficult for operators to have full knowledge or clear data on how to arrange a test setup that reflects actual site conditions.

Subsequently, uneven wetting test is not relevant for composite insulators.

The testing may still be performed to outdoor bushings, particularly with ceramic insulators, but shall be agreed between purchaser and manufacturer.

ISBN: 979-8-8557-0865-3, 979-8-8557-2380-9, 979-8-8557-2381-6

Number of Pages: 78

Product Code: STDAPE27033, STD28073, STDPD28073

Category: Transformers

Draft Number: P65700-19-03/CDV, May 2024 - APPROVED DRAFT