IEC 60349-2:2010 applies to converter-fed alternating current motors forming part of the equipment of electrically propelled rail and road vehicles. The object of this part is to enable the performance of a motor to be confirmed by tests and to provide a basis for assessment of its suitability for a specified duty and for comparison with other motors. The main technical changes with regard to the previous edition are as follows: - the limits valid for traction motors are now directly stated in this standard; - the methods described in the relevant ISO standards are now allowed.