Measuring value transmission ( Infrared, KoSchutzIR )




The measuring value evaluation of the bridge voltage takes place in the high-tension plane. The selective handling of the 50 Hz signals makes sure that the supervision of the bridge differential voltage is not falsified by ripple control transmissions. The power supply takes place via bar-type current transformers which are mounted on the current rails. The measuring value of the 50 Hz voltage is being transmitted as a serial data stream by the 38 kHz modulated IR signal with Manchester-Coding and CRC check sum to the corresponding receiver.