In this paper

the control

supervisory and communication functions of electric chassis are integrated into an intelligent breaker’s research platform. The integrated control and supervisory unit used power electronic devices to replace the electrical relays and used pulse width modulation（PWM） to achieve the forward and exit functions of electric chassis operation

used hall current sensor to survey the motor current. This integrated control and supervisory unit realized on-line condition monitoring and IEC 61850 protocols

which can reduce the number of signal detecting and the intelligent electronic devices and increase device comprehensive properties.