Электронные однофазные счетчик

DDS520 Electronic Single-phase Energy MeterDescriptions: DDS520 electronic single-phase energy meter is a full electronic energy meter to measure the single-phase active power at AC 220V and 50Hz.It adopts advanced microelectronic technology and SMT manufacturing technique,and completely conforms to GB/T17215.321-2008 standard. Applications: Designed for electricity metering of new or reconstructed single-phase user, it is particularly suitable in residential area ,organization ,factories , and schools etc.. Working Principle: There area basic function module in the energy meter separately named energy-metering module. The energy-metering module adopts advanced special integrated circuit-ADE7755. The two analogue-to-digital converters in ADE7755 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. 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;·Digester display; ·Bidirectional active energy measurement; ·Display of recycled information including accumulated energy value; ·With the protection from harmonic wave and high-frequency pulse interference; Main Techical Parameters: Accuary class1.0,2.0Rated voltage220VBasic current(Ib)/ Max current(Imax)1.5(6)A,2.5(10)A,5(20)A,10(40)A,20(80)ARated frequency50HzNormal operating temperature-25°C 55°CLimit operating temperature-30°C 60°CStorage temperature-40°C 70°CRelative humidity≤85%Size153mm×109mm×57mmWeightAbout 0.4KgService life>10 yearsMeter constant800/1600/3200/6400imp/kWhStart current0.004Ib(1.0),0.005Ib(2.0)Normal operating voltage0.8Un 1.15UnLimit operating voltage0.7Un 1.2UnDegree of protectionIP54