| 概述 Application（） |
| 該產(chǎn)品采用大規(guī)模集成電路，先進(jìn)技術(shù)制造的國內(nèi)新電能計量新產(chǎn)品，用來計量額定電壓為220V，頻率為50Hz的交流單相有功電能，該產(chǎn)品能夠計量正、反兩方向的有功電能，且以同一個方向累計，具有防止竊電的功能。采用光耦輸出檢測信號，發(fā)光二極管指示用電，便于監(jiān)控。 ；本產(chǎn)品質(zhì)量技術(shù)指標(biāo)符合GB/T17215.321-2008國家標(biāo)準(zhǔn)和lEC1036—2002國際標(biāo)準(zhǔn)。 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. |
| 主要特點(diǎn) Strncture（） |
用戶使用電表時，對分流分壓器上進(jìn)行信號取樣，經(jīng)放大、乘法、積分、V／F變換、分頻、功率驅(qū)動等電路的處理，驅(qū)動步進(jìn)馬達(dá)帶動計度器累計電能度數(shù)。
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． |
| 規(guī)格及主要技術(shù)參數(shù) Main Technical Parameter（） |
| ◎高：誤差<±1．0％<±2．0％ ◎High accuracy：error<±1．O％<±2．0％ ◎高靈敏度：啟動電流<O．4％Ib ◎High sensitivety：initial staring current<O．4％lb ◎?qū)捸?fù)荷：電流過載倍數(shù)>12倍 ◎Range of large load：current overload ratio>12 ◎低功耗：電表自身耗電<lW ◎Low power consumption：consumption of meter itself<1W ◎高可靠性：MTBF>10萬小時 ◎High reliability：MTBF>10×10。 ◎重量輕：<0．6kg ◎Weight：<O．6Kg ◎起動電流：在額定電壓，額定頻率、功率因素為1．O的條件下，當(dāng)負(fù)載電流大于0．4％1blt,~電能表能正常工作。 ◎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 ◎潛動：電表具有防潛動邏輯電路。 ◎The meter use logic circuit to anti—creep ◎參比電壓(V)：220 ◎基本電流lb(A)：1.5(6)，2．5(10)，5(20)，10(40)，15(60) |
