Single phase electronic prepayment energy meter

Single phase electronic prepayment energy meter,prepaid meter,intelligent prepay watt-hour meter IntroductionThe series of products are applicable to the place where have rules of paying in advance and then consuming to measure single phase AC active electrical energy,it also has multiple functions,such as purchasing in advance, maximal load limiting, user’s information management. Each of performation accords with GB/T17215-2002,GB/T18460.3-2001 standard, display mode can be selected (LED or LCD),it has many advantages,such as long ser­vice life,high accuracy,good overload,low consume and small volume. 2.Specifications and types Specifications and typesReference voltage(V)Rated frequency(Hz)Rated current(A)Meter constant(imp/kw.h)DDSY87022050/601.5(6) 2.5(10) 5(20) 10(40) 15(60) 20(80)As shown in nameplate 3. Technical parameter 3.1 Electrical required. 3.1.1 Accuracy rating:class 1.0,class 2.0 3.1.2 Normal working voltage:0.9Un 1.1Un reference voltage 3.1.3 Limiting working voltage:0.7Un 1.3Un reference voltage 3.1.4 Isolation voltage:≥2000VAC 3.1.5 Power consumption: ≤2W 3.1.6 Apparent power:≤10VA 3.1.7Start:Under the condition that reference voltage, rated frequency and power factor is 1, the meter will record energy continuously. 3.1.8 Creeping:when put on 115% rated voltage in voltage circuit ,and there is no current in current circuit,the pulse outputs less than 1wh. 3.1.9 Designed life: ≥10 years 3.2 Environment requirements 3.2.1 Normal working temperature:-25-+60(three phase) 3.2.2 Limiting working voltage:-40—+70 3.2.3 Transportation and Storage temperature:-45—+70 3.2.4 Relative humidity (RH):annual mean should be less than 80% 4.Main function 4.1 This meter have function of two direction measurement,it can accurately measure the power of forward direction and reverse direction,besides,it accumulate quantity of electricity n one direction, and anti-theft. 4.2 Adopt photoelectric isolated technology,which output pulse signal, power supply will be can instructed by light emitting diode. 4.3 Paying in advance and then consuming,when the purchasing electricity has been used up, cut electricity off. 4.4 Can display used electricity and remaining power alternately. 4.5 Resolving ability:When using unspecified medium,the meter will not accept order, and refuse to make its operation. 4.6 Memory function:when power failure,the data will not be lost,it can be recovered when there is electricity. 4.7 Alarm function:when electricity purchased in advance is less than preset electricity, it will alarm user to purchase electricity immediately Optional functions: supplying electricity to meet an emergency(one time), correcting electricity prices function,loging out assigned function, monitoring electricity load function. 5. Outline, mounting dimensions(MM) 5.1Outline dimensions: 229.5mm*145mm*73.5mm, the box can also be designed by module 5.2 Measurement function can be designed by customers’ demand to develop