标准摘要
[中文适用范围]： 适用于供直流电流供电的机车车辆上使用的直接直流半导体功率转换器。该标准是为车辆牵引电路供电的变流器制定的，但原则上也可适用于为这些车辆提供辅助服务的变流器。 [外文原描述]： Applicable to direct d.c. semiconductor power convertors intended for service on rolling stock supplied with d.c. current. This standard has been drawn up for convertors supplying vehicle traction circuits, but it can be applied, in principle, to convertors for the supply to auxiliary services on these vehicles.
英文名称Corrigendum 1 - Power convertors for electric traction - Part 4: Direct d.c. convertors (d.c. chopper convertors) for rolling stock