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Electromagnetic trip circuit breaker

An electromagnetic tripping and circuit breaker technology, which is applied in the direction of circuit breaker components, etc., can solve the problem of unreasonable installation position of the spiral coil for arc extinguishing, and achieve the effect of improving breaking performance, expanding the application range, and suppressing arc reignition

Pending Publication Date: 2018-07-24
SOOAR TIANJIN ELECTRICAL EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of unreasonable installation position of the spiral coil for arc extinguishing added in the existing circuit breaker

Method used

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  • Electromagnetic trip circuit breaker
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  • Electromagnetic trip circuit breaker

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] In this embodiment, the trip system 2 contains a trip solenoid 201, the trip solenoid 201 is located on the left side of the static contact 3, the movable contact 5 is located on the right side of the static contact 3, and the trip solenoid 201 is used To provide overload protection and provide power source for instantaneous protection tripping of circuit breakers. The arc extinguishing system 4 includes an arc extinguishing chamber. The arc extinguishing chamber is provided with an arc extinguishing plate 411 and an arc extinguishing grid 401. The arc extinguishing grid 401 is located below the tripping solenoid 201 and is released. The tripping solenoid 201 and the arcing plate 411 And the arc extinguishing grid 401 are arranged in order from top to bottom, such as figure 2 Shown.

[0036] In order to facilitate understanding and description, the absolute positional relationship is used in the present invention to express the positional word "上" figure 2 In the upper d...

Embodiment 2

[0044] This embodiment is a modification of Embodiment 1. In this embodiment, a trip electromagnetic coil 201 and an arc extinguishing electromagnetic coil 202 are connected in series. This embodiment can also achieve the technical effects of Embodiment 1. In this embodiment, one end of the trip solenoid 201 is electrically connected to the first connection terminal 601, the other end of the trip solenoid 201 is electrically connected to one end of the arc extinguishing solenoid 202, and the other end of the arc extinguishing solenoid 202 is electrically connected to The static contact 3 is electrically connected, such as Figure 4 Shown.

[0045] Specifically, the contact portion 311 has a right-angled structure. The contact portion 311 includes a flat plate and a vertical plate. The right end of the flat plate is connected to the upper end of the vertical plate, and the lower end of the vertical plate is connected to one end of the arc pilot portion 301 to trip the electromagnet...

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PUM

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Abstract

The invention provides an electromagnetic trip circuit breaker. The electromagnetic trip circuit breaker comprises a tripping system (2), a static contact (3), an arc extinguishing system (4), a movable contact (5) and an arc extinguishing electromagnetic coil (202). The contact (3) has a receiving area, the arc extinguishing electromagnetic coil (202) is located in the receiving area, and the arcextinguishing electromagnetic coil (202) is capable of generating an arc extinguishing promoting magnetic field; the arc extinguishing promoting magnetic field can push arc generated while the staticcontact (3) and the movable contact (5) are disconnected, to the arc extinguishing system (4). According to the electromagnetic trip circuit breaker, the arc extinguishing electromagnetic coil is arranged in the receiving area formed by bending the static contact, the area is relatively sufficient with respect to the size of the arc extinguishing electromagnetic coil, and the wire diameter of thecoil is less constrained, and when the electromagnetic trip circuit breaker is applied to the large-specification rated current-for example, circuit breaker products with rated currents greater than63A, the same effect can be achieved.

Description

Technical field [0001] The invention relates to the field of electrical switchgear, in particular to an electromagnetic trip circuit breaker. Background technique [0002] When the circuit breaker divides the circuit, the gas between the moving contact and the static contact produces a discharge phenomenon under the action of a strong electric field. This discharge phenomenon is called an arc. In order to quickly extinguish the arc, Chinese Patent CN 203456403U, on February 26, 2014, disclosed an "arc extinguishing promotion device". In the arc extinguishing promotion device, a spiral coil formed by winding a wire is provided on the right side of the movable contact, and the winding direction of the spiral coil is set relative to the current direction in the wire. When the movable contact of the circuit protection device When the static contact is disconnected, the spiral coil generates a force that pushes the arc between the moving contact and the static contact to the arc exti...

Claims

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Application Information

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IPC IPC(8): H01H73/18
CPCH01H73/18
Inventor 南寅邓艺军南添
Owner SOOAR TIANJIN ELECTRICAL EQUIP CO LTD