This part of IEC 61377 applies to the combinations of motor(s), chopper and their control, and its object is to specify: - the performance characteristics of electric drives consisting of a chopper, direct current motors, and the related control system;
IEC 61377-2:2002 history
2002IEC 61377-2:2002 Railway applications - Rolling stock; Combined testing - Part 2: Chopper-fed direct current traction motors and their control
IEC 61377-2:2002 Railway applications - Rolling stock; Combined testing - Part 2: Chopper-fed direct current traction motors and their control was changed to IEC 61377:2016 Railway applications - Rolling stock - Combined test method for traction systems.