Electric meter The main functions and features : 1. Energy measurement ways: total single-phase power meritorious =positive meritorious + reverse meritorious. 2. Right through infrared interface programming meter settings and copied sheet data to support meter reading with shrinking table, table factory default is bar code numbers. 3. After the blackout enter low-power work, in the blackout shows that the current state of total consumption, continuous 24-hour blackout revealed about the closure. 4. Meter procedural device to prevent the failure caused flight function, and after the failure to stop measurement. Main technical parameters Reference voltage 220v Voltage reference 0.7 u un .2 b -1 Current specifications 10-40a Reference frequency 50hz Grading accuracy ++ level Starting current 0.4% ib Voltage power lines "2w Communication transmission distance 5 meters Environmental conditions -25fªf+55fª Relative humidity 25f+95+¦ Automatic relay depth Data transmission speed Center frequency Dimensions 150 * 122 * 56.5