Single Phase Smart kWh Meter

DDSD285 Single Phase Smart kWh Meter Specification Item Parameter Accuracy (kWh) Class B (EN 50470-3) or Class 1 (IEC 62053-21) Accuracy (kvarh) Class 2 (IEC 62053-23) Basic current Ib 10A Maximum current Imax 100A(Direct Connection) Minimum current 0.05Ib Starting current 0.004Ib(Direct Connection) Rated voltage Un 230 V Operating voltage range 85 480V(wide voltage range) Operating frequency 50Hz Communication interface 1 circuit optical interface 1 circuit Connect to external GPRS module 1circuit M-bus wired module built-in(option) 1circuit RJ11 wired module built-in(option) Communication Protocol Optical: IEC62056-21 E mode GPRS: DLMS/COSEM MBus: En13757-3 RJ11: IEC62056-21 D mode Optical interface IEC/EN standards Relay 1 Main contactor(100A); RTC ≤0.5s/day(normal temperature) RTC support 10 years battery operation life Operating for at least 2 years in case of any power failure Backup battery Battery can be replaced Ultra capacitor can maintain RTC for at least 5 minutes Pulse constant 1000 imp/kWh Power consumption Current circuit power consumption<1VA Voltage circuit power consumption<2W/10VA Compression strength 4kV, 50Hz, 1 minute Anti-surge Voltage 6kV, 1.2/50μs Current 5kA, 8/20μs Immunity to short-circuit current 30Imax Immunity to electrical fast transients/bursts (EFTB) 4 kV (IEC 61000-4-4) Anti-magnetic Anti-strong magnetic, magnetic detection and display Anti-strong magnetic, magnetic detection and display -25°C +70°C Storage temperature -40°C +85°C