Current trip unit for circuit breaker
AssigneeGeneral Electric Company
InventorsJacek Mrowiec, Dominik Banaszcyzyk, Pawel Lazarczyk
Life of this patent
Estimating the term…
Abstract
A trip unit having a current carrying element, an anchor having an up and a down position, and an oscillator having a first position and a second position. The oscillator in the first position permits the anchor to move into the down position, and the oscillator in the second position blocks the anchor from moving into the down position. Additionally, a magnetic yoke surrounds the current carrying element and the anchor. A magnetic flux flowing through the magnetic yoke moves the anchor into the down position. A magnetic yoke surrounding the current carrying element and the oscillator provides a magnetic flux flowing through the magnetic yoke moves the oscillator into the first position, or into the second position.
Claims17
A trip unit, comprising:
- a movable anchor having a tripped position and an untripped position;
- an oscillator having a first and second position, wherein in said first position said oscillator allows said anchor to move into said tripped position, and in said second position said oscillator prevents said anchor from moving into said tripped position;
- a magnetic yoke surrounding said movable anchor and said oscillator, wherein said magnetic yoke provides a magnetic current to move said movable anchor into said tripped position, and said magnetic yoke provides a magnetic current to move said oscillator into said first or second positions;
- and
- a current carrying element surrounded by said magnetic yoke, wherein said current carrying element generates said magnetic current perpendicular to an electric current conducted through said current carrying element, wherein said electric current conducted through said current carrying element in a forward direction positions said oscillator in said second position, and said electric current conducted through said current carrying element in a reverse direction positions said oscillator in said first position.
A trip unit, comprising:
- a current carrying element;
- an oscillator having a first position and a second position;
- an anchor having a tripped position and an untripped position;
- a first magnetic yoke surrounding said current carrying element and said anchor, wherein a first magnetic flux flowing through said first magnetic yoke moves said anchor into said tripped position;
- and
- a second magnetic yoke surrounding said current carrying element and said oscillator, wherein a second magnetic flux flowing through said second magnetic yoke moves said oscillator into said first position or into said second position.
A trip unit, comprising:
- a current carrying element;
- an anchor having an up position and a down position;
- an oscillator having a first position and a second position, wherein when said oscillator is in said first position said anchor is permitted to move into said down position, and when said oscillator is in said second position said anchor is blocked from moving into said down position;
- at least one magnetic yoke surrounding said current carrying element, said anchor, and said oscillator, wherein said at least one magnetic yoke provides a magnetic current to move said movable anchor into said down position, and said at least one magnetic yoke provides a magnetic current to move said oscillator into said first or second positions;
- a blockade latch connected to said oscillator, wherein said blockade latch interacts with said anchor to prevent downward movement of said anchor;
- and
- a bumper, wherein said bumper is disposed about said anchor and is contacted by said blockade latch to prevent downward movement of said anchor,
- wherein said at least one magnetic yoke comprises a first magnetic yoke surrounding said current carrying element and said anchor and a second magnetic yoke surrounding said current carrying element and said oscillator.
Dependencies are inferred from the claim text.