Transducers of the new ProLine P50000 series from Knick Elektronische Messgeräte were specially developed for voltage and current measurement in the main and auxiliary power circuits of locomotives and multiple units. They are used, for example, for short circuit detection as well as for monitoring of traction motors and inverters, auxiliary inverters and accumulator batteries. The devices comply with all applicable railway standards and thus meet the high demands of fire protection (HL3 according to EN 45545-2 (2016)), electrical safety, mechanical robustness as well as insensitivity to extreme environmental conditions and electromagnetic interferences.
Compared to conventional sensors used in railway vehicles, ProLine P50000 transducers stand out due to their calibrated range selection feature and integrated universal power supply unit. Calibrated range selection allows different input ranges (up to 4200 V) to be selected quickly and easily. After the switchover, the specified high accuracy is maintained without re-adjustment. Combined with a shunt resistor, the device is suitable for precise current measurement up to the kA range. A new, patent-pending design with covered high-voltage terminals ensures contact protection.
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