Back to results
US 6,472,964 B2Granted
Magnetic trip
AssigneeSchneider Electric Industries SAS
InventorsFrançois Chaudot, Frédéric Dorshner, Dominique Millot, Daniel Riffaud
Life of this patent
Estimating the term…
Abstract
A magnetic trip with a fixed magnetic circuit polarised by a permanent magnet. The magnetic circuit includes two preferably identical parallel wafers each defining a main branch and a deflection tab with the presence of a coil on each branch. At their ends opposite to the mobile pallet, the wafers have in cross-section an L shape. The insulation structure carrying the coils is formed of two half-shells tightly holding the wafers. The trip can be used in circuit breakers.
Claims8
A magnetic trip for an electrical switching device, comprising:
- a fixed magnetic circuit in association with a permanent magnet;
- at least one coil configured to be passed through by an electric current and in association with a circuit branch so as to determine a magnetic flow current function;
- and
- a moveable pallet acted upon by a spring and determining, with the fixed magnetic circuit, a main flow loop, wherein
- the magnetic circuit includes, near the permanent magnet, at least one magnetic flow deflection tab defining a secondary flow loop and equipped with at least one first fixed secondary transverse air gap, and
- at least one magnetic flow deflection tab is configured relative to the fixed magnetic circuit and to the permanent magnet so that an excess current in the at least one coil deflects the flow of the permanent magnet to the secondary flow loop.
3 more elements
Dependencies are inferred from the claim text.