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IEC
IEC 61203:2025
En Vigor
2025-05-21
Synthetic organic esters - Guidelines for maintenance and use in
electrical equipment
IEC
IEC 63522-5:2025
En Vigor
2025-05-21
Electrical relays - Tests and measurements - Part 5: Insulation resistance
IEC
IEC TR 62933-3-200:2025
En Vigor
2025-05-21
Electrical energy storage (EES) systems – Part 3-200: Planning and
performance assessment of electrical energy storage systems –
Design principles of electrochemical based EES systems
IEC
IEC 61847:2025
En Vigor
2025-05-20
Ultrasonics - Surgical systems - Measurement and declaration of the
basic output characteristics
