Prepaid-Energie-Messinstrument

DDSY881 electronic single-phase prepaid energy meter is used to measure single-phase energy with 50/60Hz rated frequency, it realizes the functions of prepayment management and load control.Function and features: 1) Full electronic single-phase active energy measurement 2) Protecting against tamper and fraud 3) Prepayment management system by use of IC card to commercialize energy so as to pay for it first and use it afterwards 4) Scrolling display energy consuming information which is convenient for user 5) Warning when residual energy is deficient to remind users of purchasing energy in time 6) Delay trip at overload automatically 7) IC card adopting ISO standard IC card 8) Adopting large-scale special IC with industrial class design and high accuracy 9) Special large capacity meter reading card with high accuracy 10) One meter with one IC card which adopts special security measures to ensure the security and reliability of data 11) Special Setting Card and Meter-replacing Card are convenient for registration and maintenance of management department 12) Adopting check and error correction measures in the software to ensure the data's validity and reliability 13) Reading back energy consuming data automatically through IC card, convenient for management 14) Adopting power failure treatment technique to ensure the data being kept for 10 years