DDSI26 three-phase electronic energy meter is used a large-scale carrier-specific integrated circuit, the latest micro-electronics technology and SMT process design made of high-tech products, circuit design and component selection to allow a larger environment, tolerance as the basis, can be a reliable guarantee for the long-term stability Meter. At the same time have a long life, high accuracy, high reliability, strong overload capacity, power consumption, small size, light weight and so on.