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Product Name: 3-Phase Static Prepayment Watt-Hour MeterModel Number: DTSY200-BPlace of Origin: ChinaGeneral introduction:DTSY200-B three-phase static prepayment watt-hour meter is used to measure three-phase active electric energy in the 50Hz AC circuit. Adopting high-accuracy three-phase sampling special purpose chips, the product can carry through sampling measurement and transmit it to intellective microprocessor. After conversion and processing, the electric quantity display and interface control are completed. Data transfer is completed by IC card. Electric quantity and power consumption data are mutually transferred between the meter and electricity selling managemen t system to realize the functions of electric energy measurement and electricity charge prepayment. So, the meter is a necessity for power departments to reform electricity charge method and to achieve the management of prepayment power use.Main technical index:1) Current specifications: 3 x 5(20)A, 3 x 10(40)A, 3 x 15(60)A, 3 x 20(80)A2) Accuracy class: 1.0 class3) Reference voltage: 3 x 220/380V4) Reference frequency: 50Hz5) Operation voltage range: 0.9 Un ~ 1.1 Un6) Temperature range in operating environment: -25 ~ +55oC7) Contact capacity of electrical relay while power is turn off: AC 3A /220VMain functions:1) Energy measuring function: the meter can measure and display the usersaccumulative energy charge2) Monitor and control function: when the remnant electric quantity is less than thepresetting warning quantity 1, the meter will display remnant electric quantity at alltimes to remind the user to purchase electricity. When the remnant electric quantityis less than the presetting warning quantity 2, the meter will turn off power once toremind the user. Three minutes later after inserting electricity card, the user canmanually close breaker outside the meter. Thus, the meter resumes to supplypower. When the remnant electric quantity reduces to zero, the meter will turn offpower automatically3) Memory function: the remnant electric quantity and information stored in the meterwill not be lost due to power supply failure over a long period4) Display function: Nixie tube displays the remnant electric quantity (kWh). Watt-hourmeter displays the accumulative energy charge5) Identification function: the meter wont work while the non-designated IC card ormedium is used6) Adding function: when the user insert prepayment card, in which purchased electricquantity is stored, into the meter, the remnant electric quantity will be added to thenewly bought electric quantity7) Back writing function: when the user inserts prepayment card into the meter, theprepayment watt-hour meter can not only input the newly bought electric quantityinto the meter, but also write the information about power consumption back intoprepayment card, so that power departments can inspect how the user consumespower
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