Electromagnetic actuator and circuit breaker comprising such an actuator
AssigneeSchneider Electric Industries SAS
InventorPhilippe SCHUSTER
Life of this patent
Estimating the term…
Abstract
An electromagnetic actuator including a magnetic housing, a coil that is rigidly connected to the housing and is capable of being connected to an electric circuit, a magnetic core that is arranged in the coil and can move along a central axis defined by the coil and according to the strength or the current flowing in the coil, and a shunt that is arranged in the coil and includes a magnetocaloric material the magnetisation of which is temperature-dependent. The shunt is arranged is the coil along the central axis along a length so as to create an air gap between the shunt and the magnetic core. The actuator further includes a device for attaching the shunt to the housing that are designed to adjust said the length.
Claims10
An electromagnetic actuator comprising a magnetic field frame, a coil secured to the field frame and which can be linked to an electrical circuit, a magnetic core arranged in the coil and that can move, along a central axis defined by the coil as a function of the intensity of the current flowing in the coil, and a shunt device arranged in the coil and comprising a magnetocaloric material, the magnetization of which is a function of the temperature, the actuator being characterized in that the shunt device is arranged in the coil for a length, along the central axis, in such a way as to form an air gap between the shunt device and the magnetic core, the actuator further comprising means for fixing the shunt device to the field frame, designed to set this length.
Dependencies are inferred from the claim text.