Voltage monitoring relay 0...540V AC CM-UFD.M31

Voltage monitoring relay 0...540V AC CM-UFD.M31 – ABB – 1SVR560730R3401 – 4013614492914: Monitoring relay CM-UFD.M31 Rated control supply voltage Us at AC 50 Hz 24 ... 240V, Rated control supply voltage Us at AC 60 Hz 24 ... 240V, Rated control supply voltage Us at DC 24 ... 240V, Undervoltage detection function, Overvoltage detection function, voltage measuring range 0 .. 540V, number of contacts as opener 0, number of contacts as closer 0, number of contacts as changer 3, width 108mm, height 90mm, depth 67mm, The grid feed monitoring relay CM-UFD.M31 monitors voltage and frequency in single and three-phase grids. In connection with inverters with integrated island grid detection, it meets the conditions for NS protection according to VDE-AR-N 4105:2018-11 (generating systems on the low-voltage grid), or VDE-AR-N 4110:2018-11 ((generating systems on the medium-voltage grid ). For use in old systems, the setting values according to VDE-AR-N 4105:2011 or BDEW (supply to medium-voltage network) can also be selected. The last 99 causes of switch-off and their respective times are stored in an alarm memory Monitoring of the connected tie switches, vector surge detection and ROCOF frequency gradient monitoring.