| 摘要 |
The invention relates to an apparatus intended to determine the clock hour figure of a vector group in three-phase transformers. According to the invention, the apparatus comprises a measuring block to be connected to some pairs of terminals () of a transformer to be checked, the results from the measuring block being then simulated in a computing block and viewed by means of a displaying block which will indicate, by means of some light-emitting diodes (), the clock hour figure of the vector group and the occurrence of a fault, respectively. |
