北京海特科工自动化设备有限公司维修ABB直流调速器:DSC 500B系列;
DCS 501B1503-51,DCS 501B2003-51,DCS 502B0025-51,DCS 502B0050-51,DCS
502B0075-51,DCS 502B0100-51,DCS 502B0140-51,DCS 502B0200-51,DCS
502B0250-51,DCS 502B0350-51,DCS 502B0450-51,DCS 502B0520-51,DCS
502B0680-51,DCS 502B0820-51,DCS 502B1000-51,DCS 502B1203-51,DCS
502B1503-51,DCS 502B2003-51,DCS 501B0050-61,DCS 501B0110等;