UNE-EN IEC 60112:2020 Method for the determination of the proof and the comparative tracking indices of solid insulating materials (Endorsed by Asociación Española de Normalización in January of 2021.)
2021UNE-EN IEC 60112:2020 Method for the determination of the proof and the comparative tracking indices of solid insulating materials (Endorsed by Asociación Española de Normalización in January of 2021.)