Actuation device for auxiliary release of residual current actuation release breaker
A technology of residual current and action mechanism, applied in the direction of protection switch operation/release mechanism, etc., can solve the problems of short enough tripping time and complex structure, and achieve the effect of compact structure, reduced movement resistance, and reliable tripping.
- Application Information
AI Technical Summary
Problems solved by technology
 The auxiliary release includes a four-bar linkage mechanism and an electromagnetic relay 13. The electromagnetic relay 13 controls the action mechanism 12 to trip by controlling the lock 26 of the action mechanism 12, and the electromagnetic relay 13 collects the zero-sequence current transformer. The received tripping command is transmitted to the extended shaft 28 of the circuit breaker unit through the arc wall 55 of the rocker arm 25, thereby driving the circuit breaker to trip.
 The electromagnetic relay 13 is electrically connected with the induction coil of a zero-sequence current transformer. The induction coil of the zero-sequence current transformer can detect the residual current. When the residual current reaches a certain value, the coil of the electromagnetic relay 13 is excited, and the ejector rod of the electromagnetic relay 13 27 pops out, pushes the lock 26 to rotate, the hook 52 of the lock 26 is released, so that the mechanical interlock 35 o...
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