KR20200009461A - Current Leakage Express Device for Circuit Braker - Google Patents

Abstract

The present invention relates to a circuit breaker leakage trip display structure for wiring (circuit) with an improved structure comprising: a housing (10) constituting a body of an image current transformer which contains a core (20) of the image current transformer; a moving core (20) going forward by an electromagnetic force generated by leakage electricity in the housing (10) to make an operating lever (30) go forward; the operating lever (30) slidably coupled to one side wall (12) of the housing (10), retracted and stopped in an initial (ON) state, going forward together with the moving core (20) by the generation of the electromagnetic force due to the leakage electricity, and hitting a trip bar (not shown) of a circuit breaker to trip the circuit breaker (1); and a display mechanism (40) formed in front of the operating lever (30) of a front side wall (11) of the housing (10) to display a leakage trip caused by the image current transformer.

Description

Improved Structure Circuit Breaker Earth Leakage Trip Display Structure Using Current Transformers {Current Leakage Express Device for Circuit Braker}

The present invention relates to an improved circuit breaker short circuit trip display device of an improved type using an image current transformer.

In general, a circuit breaker is an electrical device used to automatically cut off a circuit or open or close a load by using a detection device in an electrical overload condition or a short circuit accident in a power system line of transmission and distribution or a connection system line with an electrical device. In general, the wiring breaker can switch the electrical line to which the wiring breaker is connected to an open or closed state by a user's operation handle on / off manual operation.

In general, the electrical installation of circuit breakers and earth leakage breakers are selectively installed in the electrical equipment of a certain size or more to block and interrupt excessive current flowing to the use load due to a short circuit or ground fault in the distribution system and various branch lines. It prevents safety accidents such as electric shock of human body or fire caused by short circuit load.

Since the circuit breaker did not know the leakage condition of each line, there was a problem that an electric shock or a fire occurred due to a ground fault.As a result, a single phase, three phase, or neutral wire connected to a load was included. The above-mentioned problem is caused by operating a ground fault fire alarm that quickly displays the ground fault state by the electromotive force excited by the winding terminal of the video transformer when the ground fault occurs through the video current transformer which detects the collapse of the current balance flowing in each phase through the output line of the circuit breaker. Could resolve.

As a prior art, No. 20-0234477 has a multi-layer arcing apparatus for cooling and extinguishing arcs generated by the separation of a fixed contact and a movable contact due to overcurrent, and a conductive arc due to a short-circuit current is quickly used for the arcing apparatus. Three-phase lines including single-phase or neutral wires branched from switchboards in the upper and lower parts of the current-limiting device in which a magnetic augmentation device such as an induced core or arc runner is attached to a fixed contact point, and an over-current trip device for blocking the over-current or short-circuit current In the conventional circuit breaker equipped with a plurality of inlet terminals connected to the arc extinguishing device, a plurality of load terminals connected to the overcurrent trip device, the front side one side of the three-phase line and the on-off switch to disconnect the load line, Including a single phase or a neutral wire on one side inside the wiring breaker is installed the lead terminal and the load terminal Disclosed is a wiring circuit breaker with a built-in video current transformer, characterized in that the three-phase line is passed through the video current transformer and its winding terminal is exposed to one side of the front circuit breaker to form a terminal portion combined with a conventional earth leakage fire alarm.

The present invention is to provide a circuit breaker earth leakage trip display structure of an improved structure using an image current transformer that is reliable in operation and excellent in production assembly in displaying an earth leakage trip of an image current transformer.

The present invention is a circuit breaker of an improved structure using an image current transformer that increases the assemblability of the current transformer and the operability in a narrow space by using a mechanism for indicating a short circuit trip by the strike of the operating lever rather than a direct stroke of the moving core. It is for providing a short circuit trip display structure.

The circuit breaker earth leakage trip display structure of the improved structure using the video current transformer of the present invention is a wiring (circuit) circuit breaker earth leakage trip display structure, comprising: a housing constituting the body of the video current transformer incorporating the core 20 of the video current transformer. 10); A moving core 20 for advancing by the electromagnetic force generated by the leakage electricity in the housing 10 to advance the operation lever 30; It is slidably coupled to one side wall 12 of the housing 10, is retracted and stopped in an initial state (ON), and moves along with the moving core 20 by the generation of electromagnetic force due to leakage electricity, so that the trip bar of the circuit breaker ( An operation lever 30 for hitting the circuit breaker 1 by hitting it; And a display mechanism 40 formed in front of the operation lever 30 of the front side wall 11 of the housing 10 to display a short circuit trip by the image current transformer.

In the circuit breaker earth leakage trip display structure of the improved structure using the image current transformer of the present invention, the display mechanism 40 is formed in front of the operation lever 30, and the operation lever 30 is advanced by the leakage trip. In this case, the display unit 45 is exposed by being struck by the tip 32 of the operating lever 30 and rotated in one direction, and is restored by a restoring force (restoration spring, not shown) when the operating lever 30 retreats to the initial position. By rotating in the other direction in the opposite direction, the display portion 45 is concealed (to an invisible position) from the external view.

In the circuit breaker earth leakage trip display structure of the improved structure using the video current transformer of the present invention, the display mechanism 40 includes a support plate 41 protruding from the front wall 11 of the housing 10 and the support plate 41. A rotary shaft 42 rotatably installed at an upper portion of the upper side), a striker 43 extending horizontally in the direction of the tip 32 of the operating lever 30 from the middle of the rotary shaft 42, and the rotary shaft ( It is fixed to the upper part of 42, and when a short circuit trips, the striker 43 is hit by the tip 32 of the operating lever 30, and when the rotating shaft 42 rotates in one direction, it is displayed on the upper case of the breaker. Located in the lower portion of the window (3) indicating the state of the short-circuit trip state of the current transformer and the operating lever 30 when the retracted to the initial position by rotating the rotary shaft 42 in the other direction to the initial state It is configured to include a restoring spring (not shown), to restore to.

According to the present invention, there is provided a circuit breaker earth leakage trip display structure of an improved structure using an image current transformer which is reliable in operation and excellent in production assembly in displaying an earth leakage trip.

According to the present invention, an improved structure using an image current transformer that increases the assemblability of the current transformer and its operability in a narrow space by using a mechanism for displaying a short circuit trip by hitting the operating lever rather than directly moving the moving core. A circuit breaker short circuit trip display structure is provided.

1 is a diagram illustrating a video current transformer leakage display method according to the related art.
2 and 3 is an external view of a circuit breaker of the present invention.
Figure 4 is a detailed view of the video current transformer and display structure of the present invention.
5 is an operational state diagram of an image current transformer and a display structure of the present invention.

Hereinafter, a circuit breaker earth leakage trip display structure of an improved structure using an image current transformer according to an exemplary embodiment of the present invention will be described in detail with reference to the accompanying drawings. 1 is a view illustrating an image current transformer leakage display method according to the prior art, FIGS. 2 and 3 are external views of a circuit breaker of the present invention, FIG. 4 is a detailed view of the video current transformer and display structure of the present invention, and FIG. This is the operational state diagram of the image current transformer and display structure.

2 to 5, the circuit breaker earth leakage trip display structure (apparatus) of the improved structure using the image current transformer of the present invention is displayed with the housing 10, the moving core 20, the operation lever 30, and the display. It comprises a mechanism 40.

The description of the structure of the operation principle of the general video current transformer is omitted. The moving core 20 interacts with the coil and the permanent magnetic flux located inside the housing 10 to prevent the permanent magnet from being fixed by a spring (not shown) force and a moving core electromagnetic force positioned together with the actuating lever on the side when a leakage current occurs. Win and move forward. As a result, the rear end of the operation lever moving forward touches the trip bar (not shown) of the wire breaker, and the line is blocked by the action of the trip bar. Description of the process of blocking the line of the breaker by the touch of the trip bar is omitted, and the related art disclosed at the time of filing the present invention is considered to be described in the specification of the present invention.

As shown in Figs. 4 and 5 (a, b), the housing 10 constitutes a body of the image transformer that houses the core 20 of the image transformer. The moving core 20 is advanced by the electromagnetic force generated by the leakage electricity in the housing 10 to advance the operation lever 30. The moving core 20 interacts with the coil and the permanent magnetic flux located inside the housing 10 to protrude and move forward to overcome the force to be fixed by the permanent magnet at the occurrence of the leakage current and the spring force positioned with the operating lever on the side.

2 to 5, in the circuit breaker earth leakage trip display structure (apparatus) of the improved structure using the image current transformer of the present invention, the operation lever 30 is one side wall 12 of the housing 10. Is slidably coupled to the circuit, and retracts and stops in an initial state, and moves together with the moving core 20 when the electromagnetic force is generated by the leakage electricity, and strikes a trip bar (not shown) of the circuit breaker to break the wiring breaker 1. Trips. The display mechanism 40 is formed in front of the operation lever 30 of the front side wall 11 of the housing 10 to display a short circuit trip by the current transformer.

As shown in Figs. 2, 4 and 5 (a, b), the display mechanism 40 is formed in front of the operating lever 30, and the operating lever 30 is advanced by the leakage trip. In this case, the display unit 45 is exposed by being hit by the tip 32 of the operating lever 30 and rotating in one direction. When the operation lever 30 is retracted to the initial position, the display portion 45 is concealed from an external perspective (to an invisible position) by rotating in the other direction in the opposite direction by a restoring force (restoration spring, not shown).

As shown in FIGS. 2, 4, and 5 (a, b), the display mechanism 40 includes a support plate 41 protruding from the front wall 11 of the housing 10 and a support plate 41. A rotating shaft 42 rotatably installed upright on the upper portion, a striker 43 protruding horizontally in the direction of the tip 32 of the operating lever 30 from the middle of the rotating shaft 42, and an upper portion of the rotating shaft 42; Fixed to the ground, and when the short-circuit tripping striker 43 is hit by the tip 32 of the operating lever 30 to rotate together when the rotating shaft 42 rotates in one direction, the display window (3) of the upper case of the breaker Located at the bottom of the display unit 45 to indicate that the leakage current trip state of the current transformer and the restoring spring to restore the initial state by rotating the rotating shaft 42 in the other direction when the operating lever 30 is retracted to the initial position It is configured to include (not shown).

<Action description>

As shown in FIGS. 4 and 5, the operating lever 30 slidably coupled to one side wall 12 of the housing 10 in the initial state ON is in a retracted stop state in the initial state. have. The actuating lever 30 connected to the moving core 20 may maintain an initial (retracted stop) state by, for example, a force of the permanent magnet inside holding the moving core 20.

When a certain amount of leakage electricity is generated in the wiring and the electromagnetic force is applied to the moving core 20, the moving lever 20 overcomes the holding force of the permanent magnet along with the restoring force in the forward direction of the operating lever, and protrudes and moves forward (trip operation). At this time, the rear end 31 of the operation lever 30 hits a trip bar (not shown) of the circuit breaker to trip the circuit breaker 1.

When the forward trip of the moving core 20 occurs in the initial state of FIG. 5B, the tip 32 of the actuating lever 30 to be advanced is horizontal in the direction of the tip 32 of the actuating lever 30 in the middle of the rotating shaft 42. Hitting the projected strike band 43, thereby rotating the rotation shaft 42 and the display unit 45 is in a state as shown in Figure 5a.

As shown in Figs. 2, 3, and 5 (a, b), in the initial state of Fig. 5b, the non-display 46 (eg gray, white, black) is displayed on the display window 3 of the upper case of the breaker. It is located at the bottom of the display to indicate that it is normal, and in the short circuit trip state as shown in FIG. 5A, the non-display unit 46 (for example, red and red) is located at the bottom of the display window 3 of the upper case of the circuit breaker to indicate a short circuit trip state. Display.

When the display mechanism is located at the tip of the conventional moving core, there may be a malfunction due to the tripping operation and a problem that is difficult to assemble. Thus, by developing a configuration in which the tip of the operating lever 30 touches the display mechanism, It has a favorable effect to solve the problem.

Although the present invention has been described in connection with the above-mentioned preferred embodiments, the scope of the present invention is not limited to these embodiments, and the scope of the present invention is defined by the following claims, and equivalent scope of the present invention. It will include various modifications and variations belonging to.

The reference numerals set forth in the claims below are merely to aid the understanding of the present invention, not to affect the interpretation of the scope of the claims, and the scope of the claims should not be construed narrowly.

1: wiring breaker 10: housing
3: display window 11: front wall
12: one side wall 20: moving core
30: operating lever 32: tip
40: display mechanism 41: support plate
42: rotation axis 45: display unit

Claims (3)

In a circuit breaker earth leakage trip display structure,
A housing 10 constituting a body of the video current transformer having a core 20 of the video current transformer;
A moving core 20 for advancing by the electromagnetic force generated by the leakage electricity in the housing 10 to advance the operation lever 30;
It is slidably coupled to one side wall 12 of the housing 10, is retracted and stopped in the initial state (ON), and advances with the moving core 20 by the generation of electromagnetic force due to leakage electricity to trip bar of the wire breaker ( An operation lever 30 for hitting the circuit breaker 1 by hitting it;
And a display mechanism (40) formed at the front of the operation lever (30) of the front wall (11) of the housing (10) to display a short circuit trip by the current transformer. Circuit breaker earth leakage trip display structure with improved structure.
The method of claim 1,
The display mechanism 40,
Is formed in front of the operating lever 30,
When the operating lever 30 is advanced by the leakage trip, it is hit by the tip 32 of the operating lever 30 and rotates in one direction to expose the display unit 45,
When the operating lever 30 is retracted to the initial position by rotating the other direction in the opposite direction by the restoring force (restoration spring, not shown), it characterized in that the display portion 45 concealed from the external view (to the invisible position) Improved structure of circuit breaker earth leakage trip display using image current transformer.
The method of claim 1,
The display mechanism 40,
A support plate 41 protruding from the front wall 11 of the housing 10,
A rotating shaft 42 rotatably installed upright on an upper portion of the support plate 41;
A striker 43 which protrudes horizontally in the direction of the tip 32 of the operation lever 30 in the middle of the rotation shaft 42;
It is fixed to the upper portion of the rotary shaft 42, when the short-circuit tripping striker 43 is hit by the tip 32 of the operating lever 30 to rotate together when the rotary shaft 42 rotates in one direction to the top of the breaker A display unit 45 positioned below the display window 3 of the case to indicate a short-circuit trip state of the current transformer;
Restoring spring (not shown) to restore the initial state by rotating the rotary shaft 42 in the other direction when the operation lever 30 is retracted to the initial position,
The circuit breaker earth leakage trip display structure of the improved structure using the image current transformer, characterized in that comprising a.

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