ISO 10816-21:2015

Mechanical vibration — Evaluation of machine vibration by measurements on non-rotating parts — Part 21: Horizontal axis wind turbines with gearbox

Publication date:   Apr 29, 2015

General information

90.92 Standard to be revised   May 13, 2022


ISO/TC 108/SC 2 Measurement and evaluation of mechanical vibration and shock as applied to machines, vehicles and structures

International Standard

17.160   Vibrations, shock and vibration measurements



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ISO 10816-21:2015 specifies the measurement and evaluation of mechanical vibration of wind turbines and their components by taking measurements on non-rotating parts. It applies to horizontal axis wind turbines with mechanical gearbox and rated generator output exceeding 200 kW and the following design and operational characteristics:
a) installation on supporting systems (tower and foundation) made of steel and/or concrete;
b) horizontal axis rotor with several rotor blades;
c) rotor bearing separate from or integrated into the gearbox;
d) generators driven via gearbox;
e) generators of the synchronous or asynchronous type (mostly equipped with 4-pole generator);
f) generators with only a fixed pole number or which are pole-changeable for speed adjustment;
g) output control by rotor blades (pitch or stall wind turbines);
h) generator coupled to the power grid via converter or directly.

Life cycle


ISO 10816-21:2015
90.92 Standard to be revised
May 13, 2022


ISO/WD 20816-21