61857-21-2009 Electrical insulation systems – Procedures for thermal evaluation – Part 21: Specific requirements for general-purpose models – Wire-wound applications (Edition 3.0)
Systèmes d'isolation électrique – Procédures d'évaluation thermique – Partie 21: Exigences particulières pour les modèles d'usage général – Applications aux enroulements à fil (Edition 3.0)
Electrical insulation systems – Procedures for thermal evaluation – Part 21: Specific requirements for general-purpose models – Wire-wound applications (Edition 3.0) 是非强制性国家标准,您可以免费下载前三页
This part of IEC 61857 describes a general-purpose model (GPM) and a tall channel alternative model (GPM-TC) which can be used for the evaluation of wire-wound electrical insulation systems (EIS) where specific electrotechnical products are not available or required.