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General introduction:DSSF200/DTSF200 serial 3-phase static multi-tariff watt-hour meters are the new-model three-phase time-sharing measurement products designed and developed by Seasun Electronic Industrial Co., Ltd. The meter adopts the latest three-phase energy measuring special chips to achieve high-accuracy and high-overloading three-phase complex-rate electric energy measurement. The product with high stability, high accuracy and easy operation, is an indispensable high-tech product for power departments to carry out time-sharing electric charge and modern energy measurement management.Main technical index:1) Accuracy class: class 1.0, 2.02) Rated frequency: 50Hz3) Power consumption:a) Voltage circuit: ≤2W and 10VAb) Current circuit: ≤0.6VA4) Daily timing accuracy: ≤±0.5s (23±3oC)5) Daily timing error while power cut: ≤±1.0s/d6) Power consumption while power cut: stand-by current ≤45μA (batteryvoltage is 3.6V, and 32768Hz)7) Influence upon voltage: if operating voltage changes ±20%, its stability is ingood condition8) Environmental conditions:a) Operation temperature: -20 ~ +45oCb) Limited operation temperature: -40 ~ +60oCc) Relative humidity:i) The annual average humidity: ≤75%ii) 30 days, and these days are randomly distributed in one year ≤95%iii) In other days it sometimes reaches ≤85%9) Appearance dimensions: 278mm x 172mm x 74mmMain functions and characteristics:1) Multi-tariff (time-sharing) electric energy measurement2) Measure the maximum demand3) Display4) Data are displayed by the special wide temperature model LCD in Chinese. Whilepower is cut off, data will be displayed by LCD automatically in cycles. The displayingdata items and alternate display circle can be set5) Programme and data communication6) The meter has the functions of infrared remote control programme, hand computerprogramme and RS485 remote communication programme.The last programme dateand programme times can be recorded automatically. Data communication is verifiedfor many times to guarantee its accuracy and reliability. Programme operation isprotected by two encrpytion techniques, switch (hardware) and password(software). The open data communication platform is convenient for the conversionbetween multiple communication specifications. The meter has the functions ofcircuit display, RAM, EEPROM memory and WDT selfchecking7) Time switch8) Phase losing date record
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