Guideway installation wireless GPRS three-phase multifunctional power meter,designed for energy efficiency management cloud platform system;Convenient rail installation mode,can be directly installed with air switch,circuit breaker,contactor.Can be connected to the external current transformer,PT,CT multiplier can be set;It can also be connected to the all-in-one open transformer or RogowskiCoil coil to realize the installation without dismantling,simplify the installation steps,save the construction cost,and facilitate the engineering installation and the construction and implementation of the system.It can measure 30 electrical parameters such as current,voltage,active power,reactive power and four-quadrant electric energy on three-phase power grid.Built-in GPRS wireless communication module,directly transfer real-time data to energy efficiency management cloud platform;Compared with the traditional system,it can realize the cable-free networking,that is,out of the box.