| 摘要 |
963,847. Transformers. ELIN-UNION A.G. FUR ELEKTRISCHE INDUSTRIE. March 3, 1961 [March 7, 1960], No. 7935/61. Heading H1T. [Also in Division H2] In a control arrangement for traction motors similar to that disclosed in Specification 888,822, a reversing switch US connects the two secondary windings S H , S Z so that their buck or boost relationship may be reversed. The switch is operated when cut-out contactors have rendered this secondary circuit currentless. |
