International Standards and Conformity Assessment for all electrical, electronic and related technologies

TC 88

Wind energy generation systems

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JWG 1 Convenor & Members


Mr Jens Demtröder
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Mr Eckart BodenbachDE
Mr William A. BradleyUS
Mr Stephen BrownGB
Mr C.P. Sandy ButterfieldUS
Mr Tae Hyong ChongKR
Mr Arne CzarnojanDE
Mr Ekkehard DaschnerDE
Mr César Díaz De Cerio García de MendazaES
Mr Christer ErikssonDK
Robert ErrichelloUS
Gerald FoxUS
Mr Daniel GarcíaES
Mr Paul GibbsGB
Mr Steve GilkesGB
Mr Rainer GrzybowskiDE
Mr Ralf HambrechtDE
Mr Javier Ibañez MayayoES
Mr Tae Ki KimKR
Mr Sookrae KimKR
Mr Andreas KleinDE
Mr Frank Dieter KrullDE
Ms Nadiège LudivionFR
Mr Peter Hauge MadsenDK
Ms Helen MarkouDK
Mr Takatoshi MatsushitaJP
Mr Brian McNiffUS
Donald McVittieUS
Andrew MilburnUS
Mr Madhuphani NamburiDK
Mr Veniamin NyrkovskyRU
Brian O'ConnorUS
Mr Esa PeltolaFI
Mr Ferran Perez AyatsES
Mr Klaus Ørsted PetersenDK
Doug PowellUS
Brent ReardonUS
Mr Matthias ReichertDE
Mr Gregory SimmonsSE
Mr Arto SirviöFI
Mr Manfred SpilkerDE
Mr Tim StrehlauDE
Mr Ryoichi TakemotoJP
Mr Yasuyoshi TozakiJP
Mr Martin Winther-JensenDK
Mr Mike WöbbekingDE

Title & Task


Wind turbine gearboxes


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.
This International Standard provides guidance on the analysis of the wind turbine loads in relation to the design of the gear and gearbox elements.

The gearing elements covered by this standard include such gears as spur, helical or double helical and their combinations in parallel and epicyclic arrangements in the main power path. This standard does not apply to power take off gears (PTO).

The standard is based on gearbox designs using rolling element bearings. Use of plain bearings is permissible under this standard, but the use and rating of them is not covered.

Also included is guidance on the engineering of shafts, shaft hub interfaces, bearings and the gear case structure in the development of a fully integrated design that meets the rigours of the operating conditions.
Lubrication of the transmission is covered along with prototype and production testing. Finally guidance is provided on the operation and maintenance of the gearbox.

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Liaison Member
Liaison ISO
ISO/TC 43 
ISO/TC 60Mr Ekkehard Daschner
Mr Hanspeter Dinner
Mr Charlie Fisher
Mr Robert Godau
Mr David Ingham
Mr Dirk Kempkes
Mr Petri Lahtinen
Mr Bernd Lohmeyer
Mr Shinichi Natsumeda
Mr Peter Poon
Mr Michael Reinehr
Mr Armin Schmidt
Mr Manfred Spilker
Mr Tomoyuki Takahashi
Mr Jorma Tirkkonen