Generator end three-phase-voltage monitoring symmetric output transmitter

This model utility is a symmetrical output transmitter for monitoring three phase voltages of a generator. This device is connected with the three phase transformer at the output port of the generator, all ports are separately connected with the same phase shift circuit comprising with resistors and capacitors, all output ports also separately are connected with the same resistances between lines, and the other end of those resistances between lines orderly are connected with ends of the corresponding phase shift branches, the resistances or capacitive reactance ratio of phase shift branch resistances, in line resistance and phase shift branch capacitors is 1:2: *, all phase shift branches are separately connected with corresponding full wave rectifiers, the output ports of all full wave rectifiers are connected with the same one resistive divider circuit and the voltage divider is the output port of the DC monitoring voltages. The detectors comprising phase shift branch and lines can modify the dissymmetrical three phase voltage as symmetrical three phase voltage and kept a linear relationship between rectified DC voltages and changes of three phase symmetrical voltage amplitude. This model utility is featured in a simple circuit structure for reliable monitoring and quick responding.