（）DTSY型电子式三相四线预付费公用表是采用***的单片机处理系统进行数据的采集、处理和保存。其用途是计量额定频率为50Hzl),~有功电能。其性能符合GB／T15283—1994、JB／T8382—1996标准对三相公用表的各项技术要求。本电表适用于环境温度为-20℃～50℃，相对湿度不超过85％。DTSYtypeelectronicthree——phasefour——wireprepaidpublicmeteradoptsadvancedSCMprocessingsystemfordatacollecting，processingandstoringItisusedformeasuringtheactiveelectricenergywithratedfrequency50HzItsperformancesareinaccordancewiththetechnicalrequirementsofGBFFl5283-1994andJB／T8382-1996tothethree-phasepublicmeterThismeterisapplicableforconditi***ofambienttemperature一20℃～50℃andrelativehumiditynotexceed85％主要特点Strncture（）采用专用售电机管理，先购电后用电；在同一区域内一表多卡，插卡用电，拨卡断电；能自动扣除所用电量；电量为零时，自动拉闸断电；并具有一定的防窃电软件设计等。购电卡采用SF4442~11密IC卡，每一张购电卡均有一个随***码，防止***。购电卡在同一区域内可重复购电反复使用。Adoptionofmanagementofspecialpowersellingmachine，purchasefirstbeforepowerutilization；multi—metermulti-cardinthesameregion，utilizingpowerbypluggingincard，cuttingpowersupplybypullingout；itisabletodeductthec***umedquantityofelectricityautomatically；whentherestelectricityquantityiszero，thepowersupplywouldbecutoffautomatically；itisdesignedwithcertainelectricity—stealingpreventionsoftwareThepowerpurchasecardisaSF4442encryptedICcard，eachcardhasarandompassword，preventingcounterfeitingThepowerpurchasecardisabletopurchasepoweranduserepeatedly)