40.20 Mar 13, 2026
PRVC Jun 5, 2026
IEC
TC 42
International Standard
PROJECT
IEC 63405 ED1
40.20
DIS ballot initiated: 12 weeks
Mar 13, 2026
High-voltage test techniques - Dielectric loss measurements "PROPOSED HORIZONTAL STANDARD"
40.20 DIS ballot initiated: 12 weeks
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