three-phase electricity meters

DTSD846/DSSD846 Static three-phase multi-function electricity meters Functions and features 1.Measurement of positive and negative active power can be performed both forward and reverse directions. 2. Measurement for reactive power of four quadrants can be performed. 3.Compensation for varied gain measurement and multi-segment digital are used realize measurement of high over-load multiple electric energy. 4.Demand can be provided in interval or slip mode and the slip time can be preset as minutes1,2,3,5. and demand interval as minutes 5, 10, 15, 30 and 60. 5.Four tariffs, ten tariff times, ten time zones and control for three-degree time segments (holidays, weekends and ten zones) 6.Working status, setting of parameters and other measured data can be display on the LCD. 7.One line of display for monitoring voltage and current has been increased under the display panel. The meter can also display real-time voltage, current a power factor for phase A, B and C as well as total power factor. Detailed and time can be preset through programming. 8.The meter is equipped with recording function or varieties of events, including voltage loss, current loss voltage-eligible rate, power-off and power and power restoring, phase loss, unbalance of current, over voltage, programming and broadcast timing. 9.The meter is equipped with active and reactive pulse test output port, and remote active and reactive power pulse output ports. 10. The meter is equipped with such functions as load curve and electric quantity store. 11.Infrared data transmitting channel is provided for the meter. The 38 KHz modulation infrared signal is used for transmitting data. The meter is also provided with isolated RS485 data communication channel. The data transmitting baud rate is in accordance with 1200, 2400, 4800, and 9600, and is also in accordance with more communication protocols, including the DL/T645-1997 communication protocol of multi-function electric energy meter. 12.The meter is provided with functions including programming prohibition, demand reset and meter reading at power off. Specifications and parameters: 1.Rated voltage: 3*220/380V(three phases with four wires), 3*100V(three phases with three wires) 2.Basic current: 1.5(6)A,10(40)A, 20(80)A 3.Accuracy class: 0.5, 1.0(active power), 2.0(reactive power) 4. Rated frequency: 50Hz