Zero sequence transformer

Zero sequence current protection of the basic principle is based on Kirchhoff's current law: inflow of any node in the circuit current of complex algebra and zero. In line with the electrical equipment under normal circumstances,Electric transformer the vector sum of the phase currents is zero, so the two zero-sequence current transformer

Secondary winding is no signal output actuator does not operate. When a ground fault occurs in each phase current vector is not zero, the fault current to zero sequence current transformer toroidal flux is generated, zero-sequence current transformer secondary induced voltage actuators move

Work, drive tripping device, switch power supply network, reaching ground fault protection purposes. Role: When the circuit electric shock or leakage fault occurs, the protective action, cut off the power. Use: in the three-phase line of the tube with a current transformer, or let the three phase conductors

Together through a zero-sequence current transformer can also be installed on the neutral line N a zero-sequence current transformer,Circuit breaker  use it to detect three-phase current vector. Zero sequence current transformer is made of ABS plastic shell, resin cast into sealed, effectively avoiding the transformer in

Long-term use in the process of corrosion. Good insulation, beautiful appearance. High sensitivity, good linearity, reliable operation, convenient installation. Its performance is superior to the general zero-sequence current transformer, using a wide range, not only for electromagnetic relay, also

Can be applied to electronic and computer protection device.