Remote Supervisory System of Motor Control Protection Device Based on Virtual Instrument Technology

With the development of low-voltage electrical apparatus toward intelligent, network, communication-capable, and its special application, it is necessary to realize remote supervisory for it. This paper designs a remote supervisory system for intelligent motor control protection device based on virtual instrument technology. The system realizes the communication of monitoring PC with lots-dot of motor control protection devices through Modbus RTU communication protocol, and realizes remote supervisory by web sever in LabVIEW 7 Express, also the system has a friendly interactive interface. The practical application shows that this system is reliable and has certain application value.