frequency measurement range 45…65 Hz [Us] rated supply voltage 80...277 V AC 45...65 Hz +/- 10 % 100...277 V DC +/- 10 % network frequency 50 Hz 60 Hz ride-through time 50 ms 120 V AC typical 50 ms 230 V AC typical 50 ms 125 V DC typical [In] rated current 1 A 5 A maximum power consumption in VA 8 VA at 277 V AC maximum power consumption in W 3.3 W (power lines (AC)) 3.3 W at 277 V (power lines (DC)) input impedance Current (impedance <= 0.3 mOhm) Voltage (impedance > 5 MOhm) tamperproof of settings Protected by access code display type 7 segments LED display colour Red messages display capacity 3 fields of 4 characters display digits 12 digit(s) - 14.2 mm in height Demand intervals Configurable from 1 to 60 min information displayed Demand current (past value)