Однофазный счетчик предоплаты DDSY283 СК карты

Single Phase Prepaid Energy Meter DDSY283 IC card 1. General: The model DDSY283 Single Phase Prepayment energy 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 (named as smart card) and advanced micro-electronic technique to collect, process and memorize data. Its technical performances are complying with the requirements of national standards of GB/T18460.3, IEC61036 and JB/T8382-1996. It has strong function of preventing the meter from decoding, compatibility as well as features of small size, weight light and high reliability. 2. Work 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 pulse frequency to the MPU to accumulate the consumption of the electricity. 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. The working principle of DDSY283 that has basic functions is as follows: Fig 1: Working principle (Skim) 3. Basic functions 3. 1. Bi-directional active energy measurement 3. 2. LED display or LCD display 3. 3. Pulse output with optical-coupling isolated 3. 4. Over-load alarm 3. 5. Precaution alarm 3. 6. Power down alarm 3. 7. Purchase reminding 4. Technical Data Applicable Standard IEC 61036-2000 Service Lifetime 10 years Accuracy ClassClass1, Class2 Working Temperature -30oC +65 oC Working Voltage Range 0.7 1.2Un Power Loss Less than 2W or 10VA 5. Specifications Rated Voltage 220V, 230V Reference Frequency 50Hz Class: Class 1, Class 2 Basic Current (Maximum Current)A 1.5(6) 5(20) 10(40) 20(80) 2.5(10) 5(30) 15(60) 30(100) Or design other specified meter