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Product Name: Single-Phase Static Prepayment Electric MeterModel Number: DDSY200-APlace of Origin: ChinaGeneral introduction:This product adopts special electric energy conversion chips ADE 7755 to carry out electric energy sampling. Then through a special microcomputer, the electric energy is processed and transferred into watt degree. By adopting IC card, a two-way transmission of the electric quantity purchased and consumed between the electric energy meter and the electricity selling management system is performed. Thus, the products can achieve the functions of electric energy measurement and electric charge prepayment.At the same time, the watt meter microcomputer can preset, measure and control the users power use load to prevent the user from danger resulted from exceeding power use load.This product is an indispensable instrument for power departments to reform the civil power use electricity charge mode and to realize the prepayment power use management.Main applications: this product is mainly applied to the self-control urban residents who care about meter costs, but do not demand much for encryption, such as the property estate.Main performance index (completely meet the requirements of standard GB/T18460.3-2001):1) Accuracy: 1.0 class, 2.0 class reference voltage (Un) 220V2) Basic current (Ib): 5A, 10A, and 20A3) Overloading multiple: 4 multiples4) Reference frequency: 50Hz5) Operation voltage range: 70% Un ~ 120% Un6) Limited operation temperature range: -25 ~ 55oC7) Humidity: annual average humidity8) Display mode: watt-hour meter displays the total energy charge, and nixie tubedisplays watt-hour meters running state and remnant electric quantity9) Power cut control mode: same as the above mentioned10) Medium: memory card 24C 01 card11) Life: >10 years12) Mounting dimensions (length, width, height): 178mm x 128mm x 64mMain functions:1) Measuring function: the meter can realize a two-way active energy measurement(backward energy charge is counted into forward energy charge)2) Prepayment function3) Display function4) Memory function5) Inspection function6) The meter is provided with the optial couple isolated passive pulse output terminal,which can be used to check the accuracy of the electric energy meter7) Load control function: When the users power use value exceeds the maximumsetting load value, the watt-hour meter will automatically cut load off8) System function : IC card can perform a two-way information transmission betweenthe watt-hour meter and the electricity selling system , that is, IC card can transmitthe purchase information from the management system to the watt-hour meter.And after the electricity card is inserted into the watt-hour meter, the power useinformation can be transmitted from the wattmeter to the management system.Thus, the management departments can manage the users power use
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