Three-phase code prepaid energy meter

Working conditions a.Working temperature:-20centidegree to 55 centidegree b.Humidity:≤85% Feature a.Kwh measurement need no adjustment under a long work b.Code prepayment:pay the fee before using c.Surplus caution 1. Automatic power off when the balance reaches 50 kwh or 20kwh , and can be re-opened by pressing the “Start” key on the board 2. Automatic power off when the balance reaches 0 m3 , it won’t open until the meter is recharged. d. It work well if there is not enough voltage in single phase or two phases e. Display the amount of consumption and surplus,times and amount of purchase,the number of the meter and version. f. Adopt cryptology and date intergration technology in order to make up 10 billion of combiations,so it is hard to decode. g. It will show the surplus when pressing the “Start” key. Main Performance Specification a. Basic Errors Load Errors Power Factor Basic Errors (%) 0.05Ib≤I<0.1Ib 1.0 ±1.5 0.1Ib≤I<Imax 1.0 ±1.0 0.1Ib≤I<0.2Ib 0.5L :0.8C ±1.5 0.2Ib≤I<Imax 0.5L:0.8C ±1.0 b.Main Performance Specification 1. Minimum Display Value: 0.1kwh 2. Maximum Amount Pre-payable:9900kwh 3. Minimum Amount Pre-payable:0.1m 3 4. Screen Display: Accumulative Consumption: 0 999999.9kWh Surplus Consumption: 0 999999.9kWh 5. Time of power-fail : ≥10years Parameter Date Reference Voltage 3*220V/380V+20%-15% Starting current ≤0.4%Ib Accuracy 1 Grade Reference Frequency 50Hz,60Hz Isulation Voltage ≥2000V Power Consumption less than 2W/10VA Maximimu Cutting Capacity 100A(Resistive) cen