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 leading 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 leading 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 leading 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.
Claims10
A trip unit, comprising:
- a current-carrying element;
- an anchor having an up 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;
- 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 down 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 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;
- 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 down position;
- 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 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.
Dependencies are inferred from the claim text.