This part of the IEC 61400 series is applicable to enclosed speed increasing gearboxes for horizontal axis wind turbine drivetrains with a power rating in excess of 500 kW. This standard applies to wind turbines installed onshore or offshore.

Standard:

NEW DIN EN IEC 61400-4 VDE 0127-4:2026-04

Wind energy generation systems

Part 4: Design requirements for wind turbine gearboxes

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