CN110739194A

CN110739194A - Circuit breaker testing device and circuit breaker with same

Info

Publication number: CN110739194A
Application number: CN201911200432.6A
Authority: CN
Inventors: 汪联峰; 谭智超; 杨鑫
Original assignee: Garcia Electronic Appliance Ltd By Share Ltd
Current assignee: Garcia Electronic Appliance Ltd By Share Ltd
Priority date: 2019-11-29
Filing date: 2019-11-29
Publication date: 2020-01-31

Abstract

The invention provides circuit breaker testing devices, which comprise a handle, a handle spring, a testing button, a connecting conductor, a testing resistor, a th testing contact and a second testing contact, wherein the handle spring is at least provided with a movable end, the movable end of the handle spring rotates along with a handle , the testing button spring is electrically connected with the handle spring, the movable end of the handle spring is abutted against a th testing contact after the handle spring is closed along with the rotation of the handle, and the movable end of the handle spring is disconnected from a th testing contact after the handle spring is opened or released, so that an electric leakage testing loop is in a disconnected state.

Description

Circuit breaker testing device and circuit breaker with same

Technical Field

The invention belongs to the technical field of circuit breakers, and particularly relates to a test device in a circuit breaker.

Background

With the development of electrical automation, kinds of electronic leakage circuit breakers have become electrical appliances widely applied to low-voltage terminal power distribution systems, such as kinds of , which are used for leakage protection and overload protection of power frequency power supplies.

In the conventional electronic earth leakage circuit breaker, an upper wiring terminal is used as an incoming line of a power supply, generally called an upper incoming line, and a lower wiring terminal is generally used as a connection of a load, generally called a lower outgoing line, the wiring of the upper incoming line on the power supply side and the lower outgoing line on the load side is required to be not misconnected, namely, the power supply cannot be connected to the lower outgoing line, but the load is connected to the upper incoming line, , when the wiring is misconnected, the product is damaged, because the earth leakage protection function part of the electronic earth leakage circuit breaker needs to be taken from the power supply side, if the upper incoming line is correctly connected with the power supply, the circuit breaker receives an earth leakage signal to be tripped, the power supply of the earth leakage protection function part is also cut off, but if the lower outgoing line is incorrectly connected with the power supply, even if the circuit breaker is in an off state after being tripped, the earth leakage protection function part is continuously electrified, and at the test circuit of the earth leakage protection function part is directly in an on state (for example, a user presses a test button of the earth leakage circuit breaker to be not discharged), so that the whole electronic earth leakage protection part is damaged.

Therefore, in order to prevent the damage of the residual current circuit breaker caused by the wrong connection of the wiring, it is preferable that the residual current circuit breaker has a reverse wiring function, that is, even if the power supply is connected to the lower outgoing line and the load is connected to the upper incoming line, the residual current circuit breaker can still work normally, and when the circuit breaker is in an off state due to the protection reasons such as leakage or the test protection reasons, the residual current circuit breaker is not damaged, and even the whole residual current circuit breaker is damaged.

Notice for CN102194619B discloses kind be used for test device of circuit breaker and have this test device's circuit breaker, this circuit breaker test device structure contains test button, test button spring, connecting conductor, lever, test resistor, and its structure is too complicated, need just can realize through mechanical component transmission lever, and the cost is great.

Disclosure of Invention

The invention aims to provide low-cost circuit breaker testing devices and circuit breakers provided with the same.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

the circuit breaker testing device comprises a handle, a handle spring, a testing button, a connecting conductor, a testing resistor, a th testing contact and a second testing contact, wherein two ends of the testing resistor are respectively connected with an N-level main circuit and the second testing contact through the connecting conductor, and an L-level main circuit is connected to a th testing contact through the connecting conductor, wherein the handle spring is at least provided with a movable end, the movable end of the handle spring rotates along with the handle , the testing button spring is electrically connected with the handle spring, the movable end of the handle spring is abutted against the th testing contact after the handle spring is turned on along with the rotation of the handle, and the movable end of the handle spring is disconnected with the th testing contact after the brake is opened or tripped, so that the electric leakage testing circuit is in a.

The testing device has the beneficial effects that the handle spring is electrically connected with the testing button spring, and then the movable end of the handle spring moves along with the handle, so that the handle spring is butted with and separated from the testing contact, the structure of a testing loop is simplified under the condition that the same purpose can be achieved, parts are reduced, and the cost is saved.

Drawings

FIG. 1 is a schematic view of the present invention with the lid removed;

FIG. 2 is a schematic diagram of the structure of the test button spring and handle spring of example ;

FIG. 3 is a schematic view of the handle;

FIG. 4 is a schematic structural diagram of a test button;

fig. 5 is a schematic structural view of a test button spring and a handle spring according to the second embodiment.

Detailed Description

The invention is further illustrated with reference to the following examples.

Example

As shown in fig. 1-4, a circuit breaker includes an insulating housing 1, a cover (not shown), a mechanical assembly 2, an electrical leakage release 3, a movable contact 4, a fixed contact 5, and a testing device, where the movable contact 4 is connected to the mechanical assembly 2 through a movable contact support, the above mechanisms except the testing device are all prior art, and not described in detail herein, a specific structure of the testing device of the circuit breaker is described in detail below, the testing device of the circuit breaker includes a handle 6, a handle spring 7, a test button spring 8, a test button 9, a connecting conductor, a test resistor 10, a -th test contact 11, and a second test contact 12, the handle 6 is movably connected to the housing through a pin, the handle 6 is in transmission connection with the mechanical assembly 2, two ends of the test resistor 10 are respectively connected to an N-stage main circuit and the second test contact 12 through a connecting conductor, a -th test contact 11 is connected to an L-stage test resistor 10 through a connecting conductor, in this embodiment, the test resistor 10 is mounted on a circuit board, the circuit board is connected between the housing and the cover, where the handle spring 7 has at least a -th end 71, a handle spring 7-th end 71, a push-off movable-push-off contact-point probe 9 is located between the handle 6-push-release-push-release-push-release-push-release-handle-push-release-push-release-push-handle 6-push-handle-push-handle 6-handle 71, a push-handle-push-handle 71.

The test button spring 8 is movably sleeved on the convex column of the insulating shell 1, the test button spring 8 is at least provided with a second movable end 81, the second movable end 81 extends to the range of the movable track of the test button 9, and the test button 9 is movably connected to the insulating shell 1, so that the prior art is provided, details are not described, when the test button 9 is pressed, the second movable end 81 of the test button spring 8 is abutted to the second test contact 12. the handle spring 7 and the test button spring 8 are of a body structure, in the embodiment, the fixed ends of the two torsion springs are bodies, the specific structure refers to fig. 2, the end part of the test button 9 is provided with a bayonet 91, and the end of the test button spring 8 extends to the bayonet 91. the bayonet 91 is of a V-shaped structure, so that the movable end of the test button spring 8 can be conveniently clamped and installed.

Example two

As shown in fig. 5, the difference between the present embodiment and the embodiment is that the handle spring 7 and the test button spring 8 are of a split structure, and the handle spring 7 is electrically connected to the test button spring 8.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to explain the principles of the invention, and that various modifications and alterations can be made by those skilled in the art without departing from the spirit and scope of the invention.

Claims

1. The circuit breaker testing device comprises a handle, a handle spring, a testing button, a connecting conductor, a th testing contact and a second testing contact, and is characterized in that the handle spring is at least provided with a movable end, the movable end of the handle spring rotates along with a handle , the testing button spring is electrically connected with the handle spring, the movable end of the handle spring is abutted against the th testing contact after the handle spring is switched on along with the rotation of the handle, and the movable end of the handle spring is disconnected from the th testing contact after the handle spring is switched off or tripped, so that an electric leakage testing loop is in a disconnected state.

2. The circuit breaker testing device as claimed in claim 1, further comprising a testing resistor, wherein two ends of the testing resistor are respectively connected with the N-class main circuit and the second testing contact through connecting conductors, and the -th testing contact is connected with the L-class main circuit through a connecting conductor.

3. The circuit breaker tester as recited in claim 1, wherein the handle spring is coupled to the handle, the handle having tabs thereon for urging the free end of the handle spring toward the test contact.

4. The circuit breaker tester as claimed in claim 1, 2 or 3, wherein the test button spring has at least movable ends, the movable ends extending into the range of the movable track of the test button, the movable ends of the test button spring abutting against the second test contacts when the test button is pressed.

5. The circuit breaker testing apparatus of claim 4, wherein the handle spring and the test button spring are of a one-piece or a two-piece structure, and the handle spring and the test button spring are electrically connected when the handle spring and the test button spring are separated.

6. The circuit breaker tester as claimed in claim 1, 2 or 3, wherein the end of the test button is provided with an bayonet, and the end of the test button spring extends to the bayonet.

7, circuit breakers, including the insulation shell, the mechanical assembly, the leakage release, the moving contact, the static contact and the test device, wherein the moving contact through the moving contact support with the mechanical assembly connected, the characteristics of the circuit breaker test device including the handle, the handle spring, the test button, the connection conductor, the test resistance, the test contact and the second test contact, the test resistance two ends through the connection conductor connection N level main circuit and the second test contact, the test contact through the connection conductor connection L level main circuit, wherein the handle spring at least has the movable end, the handle spring movable end with the handle rotation, the test button spring and the handle spring electrical connection, the handle spring with the handle rotation after closing the handle spring with the handle rotation handle spring the handle spring movable end and test contact, the open or the release handle spring movable end and the test contact between the connection disconnection, thus make the leakage test circuit in the disconnection state.

8. The circuit breaker of claim 7, wherein the handle spring is coupled to the handle and the handle has tabs thereon for urging the free end of the handle spring toward the test contact.

9. The circuit breaker of claim 7 or 8, wherein the test button spring has at least free ends, the free ends extending into the range of the test button's path of motion, the free ends of the test button spring abutting the second test contact when the test button is depressed.

10. The circuit breaker of claim 9, wherein the handle spring and the test button spring are formed as a single piece or a split piece, the handle spring and the test button spring are electrically connected when the handle spring and the test button spring are split, the test button spring end is provided with a bayonet, and the test button spring end extends to the bayonet.