The MRU3-2 is a relay for voltage supervision with universal application, it protects the three-phase network against voltage unbalance or earth faults in isolated networks. Beside the pure rms value measurement of the line voltage the MRU3-2 evaluates the symmetrical components (positive-, negative- and zero sequence system). By evaluating these components relay MRU3-2 can detect the phase sequence, voltage unbalance and earth-faults. Important: For additional common data of all MR-relays please refer to technical description "MR - Digital Multifunctional Relays".
FEATURES & FUNCTIONALITY
The MRU3-2 is a relay for voltage supervision with universal application, it protects the three-phase network against voltage unbalance or earth faults in isolated networks. Beside the pure rms value measurement of the line voltage the MRU3-2 evaluates the symmetrical components (positive-, negative- and zero sequence system). By evaluating these components relay MRU3-2 can detect the phase sequence, voltage unbalance and earth-faults. Important: For additional common data of all MR-relays please refer to technical description "MR - Digital Multifunctional Relays".