Patent ID: 6856256
Filing Date: 2005-02-15
Classification: G08C,H02J

Abstract:
1. A method for sensing and digitally transmitting analog output measurement variables of a plurality of transformers to a protective unit or panel unit in which: the analog output measurement variables of each transformer are converted into digital measurement variables, the digital measurement variables are transmitted to a data concentrator, a telegram with the digital measurement variables of the transformers is formed in the data concentrator with a predefined minimum sampling rate, and the telegram is transmitted to the protective unit or panel unit, characterized in that the analog output measurement variables are converted into the digital measurement variables (Md) with a sampling rate which is higher than the minimum sampling rate by a factor (m), and are transmitted, the factor (m) being an integral division of the number (n) of filter coefficients of in each case one FIR filter (FIR) in the data concentrator ( data is transferred, with the clock of a clock generator of the data concentrator ( the telegram is composed, by means of a multiplexer (