| 摘要 |
FIELD: electrical engineering; circuit-opening devices. ^ SUBSTANCE: proposed electromagnetic operating mechanism has magnetic core with armature, control coil, current-carrying bus, and armature-holding permanent magnet. Operating mechanism is also provided with additional inductive-reactance current-carrying bus connected in parallel with main current-carrying bus and disposed beyond magnetic circuit of mentioned core or shielded therefrom. ^ EFFECT: enhanced speed of response to emergency currents. ^ 1 cl, 2 dwg |
