| 概述 Application（） |
| 该产品采用大规模集成电路，先进技术制造的国内新电能计量新产品，用来计量额定电压为220V，频率为50Hz的交流单相有功电能，该产品能够计量正、反两方向的有功电能，且以同一个方向累计，具有防止窃电的功能。采用光耦输出检测信号，发光二极管指示用电，便于监控。 ；本产品质量技术指标符合GB/T17215.321-2008国家标准和lEC1036—2002国际标准。 DDS333 series electronic single—phase electric meter is the most advanced static electronic meter in China．The meter designs use large—scale integrated circuit，high reliability step motor,it can meter the AC single—phase active energy(voltage rating：220Vlfrequency 50Hz)，positive and negative two directions and accumulates in one direction．The test signal is isolated by phototransistor；it also has the function of anti—fraud，and indicates it operation situation on flash light，so it could be managed very easy . The quality technical norm of the products is in accordance with the GB／T1 721 5-2002 national standard and lEC1036—2002 intemational standard. |
| 主要特点 Strncture（） |
用户使用电表时，对分流分压器上进行信号取样，经放大、乘法、积分、V／F变换、分频、功率驱动等电路的处理，驱动步进马达带动计度器累计电能度数。
The meter samples the voltage and the current at the voltage divider and the current divider built in the meter．These samples are sent to the amplifier and multiplier,output of the multiplier is processed by the integrated circuit，V／F conversion，frequency divider，power drive circuits to provide plus to drive step motor and mechanical register to accumulate customer electrical energy consume． |
| 规格及主要技术参数 Main Technical Parameter（） |
| ◎高：误差<±1．0％<±2．0％ ◎High accuracy：error<±1．O％<±2．0％ ◎高灵敏度：启动电流<O．4％Ib ◎High sensitivety：initial staring current<O．4％lb ◎宽负荷：电流过载倍数>12倍 ◎Range of large load：current overload ratio>12 ◎低功耗：电表自身耗电<lW ◎Low power consumption：consumption of meter itself<1W ◎高可靠性：MTBF>10万小时 ◎High reliability：MTBF>10×10。 ◎重量轻：<0．6kg ◎Weight：<O．6Kg ◎起动电流：在额定电压，额定频率、功率因素为1．O的条件下，当负载电流大于0．4％1blt,~电能表能正常工作。 ◎Starling current the meter can work correctly at rated voltage，rated frequency，when load current is larger than 0 4％1 b(Power factor：1 0)Runningwith no—load ◎潜动：电表具有防潜动逻辑电路。 ◎The meter use logic circuit to anti—creep ◎参比电压(V)：220 ◎基本电流lb(A)：1.5(6)，2．5(10)，5(20)，10(40)，15(60) |
