| 摘要 |
A transformer (15) has at least two primary coils (1, 2) and at least one secondary coil (4), the primary coils being mutually separated galvanically. The primary coils (1, 2) are connected to separate 6 kV sources to maintain a continuous supply to a load (17). If undervoltage or lack of synchronism is detected, one of a pair of switches (13.1, 14.1) is opened to disconnect one of the sources from the transformer (15). <IMAGE> |
