Hager EU400

Voltage and frequency relay, NA protection according to VDE AR-N 4105. Network and system protection in accordance with the VDE application rules VDE-AR-N 4105:2011-06 and 4105:2018-11, VDE-AR-N 4110:2018-11. Compliance with the BDEW guidelines and DIN V VDE 0126-1-1, DIN V VDE V 0126-1-1/A1. Monitoring of overvoltage and undervoltage as well as frequency, 10-minute average vector jump monitoring (ROCOF), monitoring of the frequency gradient df/dt. Fault-tolerant with monitoring of the coupling switch for island grid monitoring (passive). Integrated 4-digit digital display for measurement values and programming. All values on the device are adjustable and readable. Pre-set basic programs according to standards and guidelines, digital display for measurement values and programming of limit values. Hysteresis and switching times for each alarm can be set individually. MIN/MAX memory for measurement values, test button, and simulation function with measurement of switching times. Integrated alarm counter for 100 alarms, with relative timestamp and recording of total alarm time. Switching outputs: output relays 2 x 1 changeover, transistor outputs for reporting the switching cause. Operating status and alarm display with LEDs. Option for code protection for parameters and sealing for set values.