Patent ID: 6459257
Filing Date: 2002-10-01
Classification: G01R

Abstract:
A measuring system, comprising:a plurality of at least two measuring instruments for measuring power and/or power factors, each corresponding to one of a plurality of at least two measuring points in an ac voltage network; a voltage transformer device having a respective voltage transformer for each phase of the ac voltage network arranged at a voltage-detection site of the ac voltage network; a current transformer for each phase of the ac voltage network arranged at each one of the measuring points, a first of the plurality each of the measuring instruments being assigned to one of the corresponding measuring points and connected at a current transformer output, a shared transmission device, the voltage transformer device and each of the plurality of measuring instruments being interconnected via the shared transmission device, the shared transmission device digitally transmitting predefined information pertaining to detected voltages to the first of each of the measuring instruments; and at least a third measuring instrument having voltage transformer inputs connected at the same location as the voltage transformers, configured at the voltage-detection site as the voltage transformer device, and configured to produce the predefined information pertaining to the detected voltages.