Calculating discretization step of controlled values in relay protection communication channels

In relay protection devices with information digital processing the input controlled values are currents and voltages of protected object received from traditional measuring transformers, which converted into voltage signals using appropriate converters. To limit frequency spectrum these subjected to preliminary analog filtering, after they discretized in time a desired step Δt quantized by level. The difference between adjacent discrete value is proved depend on its amplitude, minimum this can be observed signal mode. When choosing mode amplitude decisive. It has been that depends decreases decrease latter, i.e. when sampling it necessary take account possible frequency. There shown an example dependence sinusoidal 50 Hz ADC bit depth. analysis presented dependences shows largely determined multiplicity inferred possibility proposed methods for rough estimation quantities processing.