Crossbar assembly and trip assembly comprising same
AssigneeLs Electric Co., Ltd.
InventorJeongjae Lim
Life of this patent
Estimating the term…
Abstract
A crossbar assembly and a trip assembly comprising same are disclosed. The crossbar assembly according to an embodiment of the present disclosure comprises a crossbar and an instant bar. The crossbar and the instant bar can be rotatably coupled so as to be rotatable around the same rotary shaft. Therefore, the space required for rotation can be reduced to be less than when the crossbar and the instant bar are individually rotated. In addition, the crossbar can move in a longitudinal direction when coupled to the instant bar. Therefore, a metallic bar for movement of the crossbar is unnecessary. Therefore, interference between different-phase currents flowing through the trip assembly can be minimized.
Claims15
A crossbar assembly comprising:
- a crossbar extending in one direction, and configured to rotate in response to an overcurrent flowing in a circuit associated with a circuit breaker in which the crossbar assembly is disposed to perform a trip operation of the circuit breaker;
- and
- an instant bar extending in the one direction and rotatably coupled to the crossbar, and configured to rotate independently of rotation of the crossbar in response to a fault current flowing in the circuit to perform the trip operation,
- wherein the crossbar comprises:
- an insertion space portion formed through an inside of the crossbar in the one direction, accommodating the instant bar, and having one side facing the instant bar open;
- a first body portion extending in the one direction and surrounding a part of the insertion space portion;
- and
- a second body portion extending in the one direction and surrounding another part of the insertion space portion.
A trip device comprising:
- a frame with an inner space;
- a shooter rotatably coupled to the frame;
- and
- a crossbar assembly rotatably coupled to the frame to be brought into contact with or separated from the shooter,
- wherein the crossbar assembly comprises:
- a crossbar extending in one direction and including an insertion space portion formed through an inside thereof in the one direction, and configured to rotate in response to an overcurrent flowing in a circuit associated with the trip device to perform a trip operation of the trip device;
- and
- an instant bar extending in the one direction and rotatably coupled to the insertion space portion of the crossbar, and configured to rotate independently of the crossbar in response to a fault current flowing in the circuit to perform the trip operation.
Dependencies are inferred from the claim text.