Medium voltage vacuum circuit breaker with per phase electromagnetic actuator

In medium voltage vacuum circuit breakers, in order to achieve an even distribution of force along the entire length drive shaft, mechanism is made per phase, that is, a separate electromagnet installed under each pole. The analysis designs and features operation breakers with phase electromagnetic carried out. Deficiencies these drives have been identified. design breaker kinematic diagram monostable polarized return spring during closing are considered. As drive, it proposed use three electromagnets springs, which makes possible reduce overall dimensions not only electromagnet, but also breaker. Moreover, included part mechanism. housing synchronizing shaft has developed, impossible for non-simultaneous opening main contacts when performing switching operations. calculation out possibility its as per-phase confirmed.