Funtion of the STS three-phase four-wire electronic prepaid electricity meter features:

(1)Record the forward direction and oppsite direction active power energy;Combination active energy(programming selects for net active, or absolutely active); The four-quadrant reactive,combination reactive power 1(programming selects for forward direction active power or inductive reactive power) combination reactive power 2(programming selects for forward direction active power or capacitive reactive power);

(2)measurment accuracy: Active power level 1S: comply with IEC62052-21      Reactive power level 2S: comply with IEC62052-23;

(3)Start current to maximum current wide range;

(4)Multi-rate metering: active, reactive, and electric power shall be measured according to the rate period;

(5)LCD liquid crystal display data, indicating the power direction, each corresponding prompt;

(6)Maximum demand calculation method: slip difference time can be set;

(7)Measure, record and monitor in real time, such as voltage, current, frequency, active / reactive power / apperant power and power factor and other power parameters;

(8)Load curve record (programmable selection record time interval, record data items);

(9)Data freezing function: the measurement and measurement value can be daily frozen;

(10)Event record and preservation function: can detect and record presure loss, flow loss, phase loss, reverse, overcurrent, overvoltage, undervoltage, reverse phase sequence, trip, closing, strong magnetic interference, cover opening and other events

(11)Anti-tamper function: to detect and record the unauthorized opening of the terminal cover;

(12)In the case of individual phase failure or when applied to the two-phase or single-phase power network, the power meter can still work normally and measure accurately;

(13)Optical communication interface conforming to IEC62056-21: use computer to read meter data; multi-level secret key;

(14)With an RS-485 communication interface;

(15)The replacement communication module can be selected to expand the communication interface according to the actual application, and currently supports PLC, RF and GPRS;

(16)The energy meter has a power failure display;

(17)The energy meter can output electric power test pulses and RTC clock pulses.