COMBINED ELECTROMAGNETIC MAXIMUM TRIPPER Russian patent published in 1995 - IPC

FIELD: electrical equipment engineering. SUBSTANCE: combined electromagnetic tripper contains magnetic conductor 1 shaped as crampon, rotor 2, core 3, disconnecting spring 4, and winding 5. Core 3 has internal area 6, terminated from one face of the core in a wall with opening 12, from the opposite face in plug 11 implemented of nonmagnetic material with opening 13, the plug is engaged in a thread opening of core 3, in internal area 6 of core ferromagnetic plunger 7 with ferromagnetic pushers 8 and 9 is mounted. EFFECT: widened range of regulated switch current and higher speed of response with short circuit currents. 1 dwg