So far, low-voltage electrical standards at home and abroad have not yet defined the low-voltage electrical intelligence. However, the claim of intelligent low-voltage electrical appliances has been accepted by low-voltage electrical R & D personnel, designers, manufacturers, engineering designers and users. Low-voltage intelligent appliances should have four basic features of the function: the protection is very complete, measuring the actual current parameters, fault records and displays, internal fault self-diagnosis. With the development of building electrical and smart grid, low-voltage electrical appliances with intelligent functions are increasingly valued by residential distribution system suppliers. Compared with the ordinary low-voltage electrical appliances has the following advantages: 1) Ordinary distribution electrical appliances will make the distribution system produce higher harmonics, while the intelligent distribution electrical appliances can eliminate the higher harmonics in the input signal, thus avoiding the mistakes caused by the higher harmonics. 2) The intelligent overload device can protect the motor with a variety of starting conditions and has high operational reliability such as motor overload and phase failure protection, grounding protection, three-phase unbalance protection and reverse phase or low-current protection. 3) Intelligent protection relay with monitoring, protection and communication functions. 4) Smart appliances can achieve centralized control of the central computer and improve the automation degree of the power distribution system, so that the dispatching and maintenance of the power distribution and control systems reach a new level. 5) Smart appliances adopt digital new monitoring components to maximize the information provided by the power distribution system and control center. The wiring is simple and easy to install, which improves the reliability of the work. 6) Smart appliances can share data and reduce information duplication and information channels. Spiral Tube,Spiral Corrugated Pipe,Spiral Metal Pipe,Steel Spiral Pipe Tianjin Gongjiantiangang Steel Pipe Co., Ltd. , https://www.tjgjtggt.com