The vacuum arcing chamber core eddy current profile
Vacuum arcing chamber core eddy current is introduced in the 2019 - 03 - 30 15:05:40 vacuum arcing chamber through the alternating current with eddy current, and eddy current will reduce the performance of vacuum arcing chamber open. Core type longitudinal magnetic poles vacuum arcing chamber is a new type vacuum arcing chamber. In this kind of vacuum arcing chamber, the introduction of ferromagnetic material, eddy current in alternating magnetic field, and eddy current will reduce the performance of vacuum arcing chamber open. Eddy current ability of vacuum arcing chamber open displays in three aspects: ( 1) Eddy current to reduce the longitudinal magnetic field intensity, the longitudinal magnetic field strength reduce unfavorable to keeping the vacuum arc is in diffusion condition, thus reduce the breaking capacity; ( 2) Divide the contact eddy current lags behind the current longitudinal magnetic field, so for a period of time ( Ms level) No longitudinal magnetic field or only very weak longitudinal magnetic field effect on the arc, arc is agglomeration state burning at this moment, the contact surface ablation serious; ( 3) Eddy current in the current zero still produce longitudinal magnetic field, prevent spread of remaining particles and thus not give full play to the vacuum arcing chamber open circuit ability. Should try to suppress vortex and reduce its effects. In order to achieve this goal, various kinds of structure design of vacuum arcing chamber is trying to reduce the eddy current. Core type longitudinal magnetic poles vacuum arcing chamber in produced by alternating current symmetric alternating longitudinal magnetic field, it makes the eddy current in the opposite direction on the contact blade offset each other, so the contact blade without slot. The vacuum arcing chamber of the eddy current is mainly in the core, thus inhibiting eddy current eddy current in iron core were analyzed.