40.20 Jul 10, 2026
PRVC Oct 2, 2026
IEC
TC 9
International Standard
PROJECT
IEC 63477 ED1
40.20
DIS ballot initiated: 12 weeks
Jul 10, 2026
Railway applications - Fixed installations - Coordination requirements and energy-saving performance evaluation for energy feedback equipment in DC traction systems
40.20 DIS ballot initiated: 12 weeks
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