标题: IEC 61857-21:2009 Electrical insulation systems – [打印本页] 作者: hgundas 时间: 2020-4-24 04:57:36 标题: IEC 61857-21:2009 Electrical insulation systems –
[attach]224326[/attach] IEC 61857-21:2009
Electrical insulation systems – Procedures for thermal evaluation –
Part 21: Specific requirements for general-purpose models – Wire-wound
applications