Model Number

DDSY450

DDSY450 single phase prepaid electronic meter ,briefly named as single phase intelligent card watt hour meter ,is used for measuring single phase AC active energy with rated frequency of 50Hz to realize using electric power after prepayment ,the product adopts CPU card ,and advanced micro electrionic techniques to collect ,process and memorize data ,its technical performance are complying with the requirements of national standards of GB/T18460.3 IEC61036 ,it has strong function of preventing the meter from decoding ,compatibility as well as features of samll size ,light weight and high reliablity
working principle :
there are two basic function modules in the meter separately named the energy metering module and the MPU controller module ,,the energy metering module adopts well selected special integrated circuits as will send the pules frequency to the MPU to accumulate the consumption of the elctricity
the MPU controller module transfers message between the prepaid card and the port of card to realize the prepaid metering function and other appointed function
Basic function :
1. Bi directional active energy measurement
2. LED display or LCD display
3. pulse output with optical coupling isolated
4.over load alarm ,precautiion alarm ,power down alarm ,
5.purhcase reminding
6.accuracy class :2.0 1.0,
7.rated voltage :220v,230v
8.working temperature :-30degree ~65 degree
9. basic current :1.5(6)A 5(20)A 10(40)A 20(80)A