| 摘要 |
A single measuring system is capable of meeting all cases and is supplied with the voltage and a variable quantity. The voltage is obtained from a delta or a star connection and the variable quantity corresponds to the total or the difference of the auxiliary variable quantities which have been derived from the phase currents. The phase angle between the delta voltages or the star voltages is taken into consideration by the phase shift of the variable quantities. From the phases two auxiliary variable quantities are derived by means of current transformers with the aid of two switch components. |
