| 摘要 |
FIELD: electricity. ^ SUBSTANCE: invention is related to electrical engineering. Fast-acting automatic circuit breaker with sensor of anchor motion speed and device of electromagnet coil current control comprises electromagnet system of ""-shaped type, microprocessor device, which in case speed of anchor motion increases over maximum permissible value generates control pulses for unit of power switches, generating current of electromagnetic coil at the level, when speed of anchor motion does not exceed established maximum value, and also sensor of anchor motion speed and sensor of circuit breaker closed condition, in case of actuation of which microprocessor device provides for supply of control pulses to unit of power switches, parametres of which provide for generation of output current value from unit of power switches equal to value of electromagnet coil holding current. ^ EFFECT: provision of possibility, due to limitation of anchor motion speed limitation and according control of current in electromagnet coil for the whole process of circuit breaker closing, for elimination of trip-free release mechanism from its design with preservation of acceptable value of disconnecting time, as a result of which mechanical resource and reliability are increased, together with simplification of design and maintenance of fast-acting circuit breaker. ^ 1 dwg |
