The scanning testing for the brazing joints of contactor were carried out by this system, and the preliminary experiment results was described.

This paper describes the magnetic field structure of the contactors in arc-extinguishing chamber, permanent magnet device and the types of vacuum circuit breaker.

Starting from an establishment of a mathematical model on the contactor in relation to the longitudinal magnetic field, the paper analyzes the regulation and law for designing the area introducing electric arc to result from the surface of the contactor and its contacting coils in the longitudinal magnetic field of a vacuum switch.

Electrical contact characteristics of three contacts with different configurationswere studied according to the electrical contact theory in this paper,the experiments which werecarried out in outdoor and indoor and theoretical calculations all showed the H-contacts keeps thehighest reliability,on the contrary,the bridge contacts has the worst results.

In this paper, contacts parts of current limting circuit breaker and contactor are studied.

Effect of rare earths on electrical breakdown property of contacts made from Cu-Cr alloys in vacuum;

Computation and Analysis of Magnetic Blowout Forces in Transverse Magnetic Field Contacts of Vacuum Interrupter;

Feasibility Study Using Vibration Measurement to On-line Detect the Contact Condition of OLTC;

Analysis on Arcing Characteristics and Experiments of Electrical Contacts in Automobile Relays;

Analysis on Arc Duration and Experiments of Electrical Contacts;

In view of the distinguished feature and application prospect of nanomaterials, the nanotechnology was first applied in the fabrication of silver/graphite electrical contact materials, and newly developed AgC electrical contacts were prepared in the thesis.

Development of hot extrusion die for ZF16-252 contact pedestal used in high voltage switch;

Production of ZF16 Contact Pedestal Used in High Voltage Switch by Hot Extrusion;