DIN EN 61377-2:2003 Railway applications - Rolling stock; Combined testing - Part 2: Chopper-fed direct current traction motors and their control (IEC 61377-2:2002); German version EN 61377-2:2002
2016DIN EN 61377:2016 Railway applications - Rolling stock - Combined test method for traction Systems (IEC 61377:2016); German version EN 61377:2016
2003DIN EN 61377-2:2003 Railway applications - Rolling stock; Combined testing - Part 2: Chopper-fed direct current traction motors and their control (IEC 61377-2:2002); German version EN 61377-2:2002