Electronic Three-phase Three -wire Energy Meter

DSS520 Electronic Three-phase Three-wire Prepaid Energy Meter Descriptions: DSS520 Electronic Three-phase Three-wire energy meter is a full electronic energy meter to measure the three-phase AC active power at 50Hz.The product adopts advanced microelectronic technology and SMT manufacturing technique,and completely conforms to GB/T17215-2002 standard. Applications: Designed for electricity metering of new or reconstructed three-phase user. It is suitable in residential area ,organization ,factories ,mines etc.. Working Principle: There are two basic function modules in the energy meter separately named energy-metering module and MPU-controlling module(LCD display only). The energy-metering module adopts advanced special integrated circuit-ADE7752. The six analogue-to-digital converters in ADE7752 digitise the output of current and voltage sensors,and the true power into the load is represented in terms of the equivalent frequency at CF,F1 and F2 output points. When LCD display,the pulse frequency is sent to MPU.The MPU-controlling module accumulates the consumption power ,processes data,reads or writes IC card,controls magnetism-keeping relay operating and LCD display. Functions and Features: ·Imported chips with high precision which could precisely calculate active power; ·With reliable start-up and creep performances; ·Special circuit against tamper and fraud;·Display of recycled information including accumulated energy value,etc.; ·With the protection from harmonic wave and high-frequency pulse interference; ·Alarming and switching off when overload; ·Data in meter can be kept for 10 years when there is no power; ·Indicating broken-phase Main Techical Parameters: Accuary class1.0,2.0Rated voltage3×100VBasic current(Ib)/ Max current(Imax)3×1.5(6)A,3×5(20)A,3×10(40)A,3×20(80)ARated frequency50HzNormal operating temperature-25°C 55°CLimit operating temperature-30°C 60°CStorage temperature-40°C 70°CRelative humidity≤85%Power consumptionVoltage Circuit<2WCurrent Circuit <5VAData storeDate store under no energy 10 yearsSize260mm×164mm×78mmWeightAbout 2KgService life>10 yearsMeter constant800/1600/3200/6400imp/kWhStart current0.004IbNormal operating voltage0.8Un 1.15UnLimit operating voltage0.7Un 1.2UnDegree of protectionIP54