KR20180109800A - Current detection device with PCB multi-layer core structure - Google Patents

Abstract

The present invention relates to a current leakage breaker to which an AC and DC leakage current detection device having a multi-layered PCB core structure is applied. Specifically, a current detection device having a multi-layered PCB core structure is applied to the current leakage breaker to provide a function of automatically shutting off a current exceeding a set value from the power supply line to the load side. In addition, it is possible to greatly reduce the space occupied by the components constituting the conventional electronic circuit board by providing the electronic circuit board including a PCB core circuit block and a trip coil. In addition, it is possible to replace the coil of the conventional current detection device, to make the electric characteristic constant (uniform), to be able to mass-produce, to reduce the manufacturing cost, and to improve the affinity to make the finished product. In addition, according to the current leakage breaker, it is possible to increase the affinity to make finished products.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an AC circuit breaker having a multi-layered PCB core structure,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an earth leakage breaker to which an AC and DC leakage current detection device having a multi-layered PCB core structure is applied. More particularly, It is possible to provide a function of automatically shutting off when a current equal to or higher than a set value flows. In particular, by providing an electronic circuit board including a PCB core circuit block and a trip coil, the space occupied by the components constituting the conventional electronic circuit board is greatly reduced It is possible to replace the conventional coil of the current detecting element, thereby making the electric characteristics constant (uniform), enabling mass production, thereby reducing the manufacturing cost and improving the affinity for making the finished product AC and DC leakage with multi-layered PCB structure Relates to a circuit breaker is applied to the detector element.

1, a load 20 that operates according to an input power source and a power source PS that is supplied with power from the power source PS are connected to the load A coil CL wound around a voltage-carrying copper wire PP for transferring a current passing through the load 20 to the power supply source PS; An induced current amount detecting unit 40A for detecting a current flowing in the coil CL when the current flows through the coil PP according to the electromagnetic induction and the induced current amount detecting unit 40A, And a voltage amount sending section 40B for changing the amount of induced current outputted from the voltage output control section 10 to a voltage amount.

The current detection system constructed as described above has the effect of solving the problem caused in the current detection system according to the voltage detection described above. However, since the coil of a specific capacity needs to be wound around the circuit, the manufacturing process is complicated, There is a problem that the electrical characteristics depending on the interval and the direction are not constant, which causes a problem that the detection accuracy of the current detecting device is deteriorated.

On the other hand, as a method for measuring the current flowing through the conductor, there is a direct measuring method in which a current meter is electrically connected directly to the conductor, and a current measuring device for detecting an electromagnetic field generated around the conductor, And the like.

Here, the direct measurement method is complicated and difficult to connect the measuring instrument, and it can not be separated from the circuit. Therefore, in recent years, an indirect measurement method for avoiding the restriction of the direct measurement method is emerging.

As a representative example of the indirect measurement method, there is a method using a flux gate method.

According to the current measuring method using the flux gate method, the alternating current is applied to the two cores so that the alternating magnetization directions are opposite to each other, and the electromotive force change generated in the coils wound on the two cores is sensed, And detects a direct magnetic flux (Magnetic Flux)

The alternating magnetic flux caused by the electric current of the electric wire is detected by using a separate coil and the electric current corresponding to the detected direct current flux and alternating magnetic flux is applied to cancel the electromagnetic field caused by the current flowing in the electric wire, The current flowing through the conductor is measured by detecting the current.

As described above, conventional techniques for measuring a current by a flux gate method include Registration Practical Utility Modules 20-0283971, 10-2010-0001504, and 10-2004-0001535 .

According to the above-mentioned prior arts, when two cores are magnetized in directions opposite to each other by applying a current generated by a square wave or a sinusoidal wave, distortions occurring in the two cores due to the influence of the electromagnetic field due to the measured current of the conductor Detects a direct current component by detecting it as a voltage signal, and detects an alternating current component with a separate core or a separate circuit configuration.

Then, a magnetic flux is applied with a compensating current corresponding to the detected component, the compensating current is converged to cancel the magnetic flux due to the measured current, and the converged compensating current is measured to measure the measured current.

However, the current meter of the flux gate type according to the above-described conventional techniques is provided separately from the coil wound around the core to generate a sine wave or a square wave oscillation signal, Respectively.

As a result, the time constant varies depending on the magnetic characteristics of the core. As a result, when a fixed frequency oscillation signal that does not reflect the magnetic characteristics of the core is applied, the core is incompletely magnetized, .

In order to eliminate these factors, it is necessary to generate an oscillation signal that matches the magnetic characteristics of the core. However, since the deviation of the error ratio of the core is large in the fabrication of the current meter, it is very difficult to fit the circuit element generating the oscillation signal to the core. It is also very troublesome to adjust each time, resulting in a problem of deterioration of productivity and deterioration of performance.

Furthermore, in the above-mentioned conventional techniques, the cores are connected in series (in parallel when viewed from a connection point connecting for input of an oscillation signal) so that the opposite cores appear in opposite cores, and then an oscillation signal is applied to the series connection points of both coils, And magnetization is performed in the directions opposite to each other, so that even if a slight magnetization error is generated in both cores, there is a problem that the measurement performance appears to be large.

On the other hand, in the conventional techniques described above, since both cores to be magnetized by the oscillation signal are magnetized by the current to be measured flowing in the conductor, if the measured current is large, the core is saturated at the beginning of measurement and oscillates at a high frequency which is much larger than the frequency of the oscillation signal , It is impossible to detect the direct current component using the fluxgate method.

In general, in an opening / closing control device, the opening / closing device is a device that opens and closes an electric circuit and can open and close the load current. The circuit breaker is used for instantaneous interruption of leakage current at the time of an accident, And is capable of opening and closing the load current of 5 to 10 times of its normal load current.

That is, as shown in FIG. 2, the conventional earth leakage breaker installed on the electric line includes a handle knob 11 for turning on / off the current application from the earth leakage breaker to the load side either artificially or in the event of an accident, A trip coil 12 for turning off the knob 11, a video current transformer (not shown) for detecting the amount of a leakage current, a bimetal 13 operated at an overheat temperature, and an electronic circuit board 14, A terminal 15 to be connected is provided on the body 10 as a lower case so that the flow of current can be automatically cut off against a leakage current or an overheating temperature higher than a set value.

However, in such a conventional circuit breaker, the control circuit of the trip coil 12, which is operated to cut off the power supply line when a leakage current is generated, is mounted on the electronic circuit board 14, The trip coil 12 for operating the knob 11 on the body 10 and the electronic circuit board 14 and the image deflector can not be mounted on a relatively small electronic circuit board and are installed separately.

Therefore, it is very troublesome and difficult to install and assemble the components in the space of the limited body 10 around the knob 11 and the bimetal 13 during assembly work of the components, There is a problem that the incidence of defective products is high in terms of structure as time increases.

In order to solve this problem, in the other conventional example, an earth leakage breaker having improved parts arrangement structure was installed so that the trip coil 12 and the video current transformer could be mounted together on the electronic circuit board 14, A control circuit block (not shown) capable of controlling the trip coil 12 and the video current transformer is mounted on the electronic circuit board 14, It could not be installed together with the trip coil 12 and the video current transformer.

That is, the conventional control circuit block can not be mounted on the electronic circuit board 14 including the trip coil 12 and the video deflector structurally in the form of a DIP (Dual in-line package) The video transformer may be separately installed on the body 10 while the trip coil 12 and the control circuit block are mounted on the circuit board 14 or the video transformer and the control circuit block may be mounted on the electronic circuit board 14 As a result, the space utilization of the body 10 has been solved to some extent, but the assembling work and the assembling time of the component parts have not been reduced, (Including the control circuit block 14) are separated and structured, it is difficult to remove the circuit noise due to the dip shape, so that the defective product rate is inevitably increased.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art,

An object of the present invention is to provide a function of automatically shutting off a current flowing from a power supply line to a load side when a current exceeds a set value by applying a current detection element having a multi-layered PCB core structure to an earth leakage breaker.

Another object of the present invention is to provide an electronic circuit board including a PCB core circuit block and a trip coil to an earth leakage breaker to greatly reduce a space occupied by components constituting a conventional electronic circuit board.

It is a further object of the present invention to replace the coils of the conventional current detecting element to make the electric characteristics uniform (uniform), mass production possible, thereby reducing manufacturing cost, In order to improve the quality of life.

It is another object of the present invention to provide a current detecting element having a multi-layered PCB core structure of a fluxgate type in providing a current detecting element having a multi-layered PCB core structure to provide a current detecting element capable of detecting direct current and alternating current .

According to an aspect of the present invention, there is provided an earth leakage circuit breaker including an AC and DC leakage current detection device having a multi-layered PCB core structure according to the first embodiment of the present invention,

An upper coil pattern forming layer 100 formed of a non-magnetic material and having a plurality of coil patterns 120 connected to each other via a via hole 110 alternately from the lower side and the lower side to the upper side;

A through hole layer 200 which is formed below the upper coil pattern forming layer and is formed horizontally on both sides of the central core layer and has a plurality of via holes 210 of the same size at the positions of the via holes 110, ;

A central core layer 300 formed of a core material between the through holes;

A plurality of coil patterns 420 are formed on the lower side of the through hole layer and the central core layer and are formed of a nonmagnetic material and are connected alternately from the upper side to the lower side and from the lower side to the upper side via a plurality of via holes 410 And a lower coil pattern forming layer (400), wherein a through hole (80) is formed at the center, and the coil pattern is formed along the periphery of the through hole to insulate the wire 70, a plurality of semiconductor integrated circuit blocks 3000,

And a trip coil (7) formed on one side of the PCB core circuit block for operating the knob (3) configured in the circuit breaker under the control of the control circuit part (3300) And the substrate 3500, thereby solving the problems of the present invention.

The leakage current circuit breaker to which the AC and DC leakage current detecting elements having the multi-layered PCB core structure according to the present invention is applied,

By applying the current detecting element having a multi-layered fiber core structure to the earth leakage breaker, it is possible to provide a function of automatically shutting off a current exceeding the set value from the power supply line to the load side.

Therefore, the characteristics of ZCT and CT are uniformly provided.

In addition, by providing the electronic circuit board including the PCB core circuit block and the trip coil to the earth leakage breaker, the space occupied by the components constituting the conventional electronic circuit board can be greatly reduced, Can be greatly reduced.

That is, conventionally, it is very cumbersome and difficult to install and assemble the components in a space of a limited body centered on the knobs and bimetals during assembling work of component parts, and since a complicated assembling process and working time are increased, However, as described above, since the electronic circuit board including the PCB core circuit block and the trip coil is provided to the earth leakage breaker, the space occupied by the components formed on the conventional electronic circuit board is greatly reduced And at the same time, the weight and height of the earth leakage breaker can be greatly reduced.

In addition, since the coil of the conventional current detecting element can be substituted, the electric characteristics can be made uniform (uniform), mass production can be performed, manufacturing cost can be reduced, and the affinity for making the finished product can be increased.

Further, in providing a current detecting element having a multi-layered PCB core structure, a current detecting element capable of detecting direct current and alternating current can be provided to the earth leakage breaker by having a multi-layered PCB structure of a flux gate type, It can substitute fluxgate type devices, and it enables mass production without uniform quality and mechanical error by using printing technique.

1 is a configuration diagram of a conventional current detecting element.
2 is a block diagram of a conventional earth leakage breaker.
FIG. 3 is a view schematically showing a circuit of a conventional earth leakage breaker, and FIG. 4 is an exemplary view schematically showing a circuit of an earth leakage breaker to which an AC and DC leakage current detection device having a multi-layered PCB structure according to the present invention is applied.
FIG. 5 is a perspective view of an electronic circuit board including a PCB core circuit block and a trip coil of an earth leakage breaker to which an AC and DC leakage current detection device having a multi-layered PCB structure according to the present invention is applied, Which is a perspective view before being assembled.
FIG. 7 is a perspective view illustrating layers of the PCB component circuit blocks of the earth leakage breaker to which the AC and DC leakage current detection devices having a multi-layered PCB structure according to the first embodiment of the present invention are applied, Fig.
FIG. 9 is a perspective view showing layers of a PCB core circuit block of an earth leakage breaker to which an AC and DC leakage current detection device having a multi-layered PCB structure according to a second embodiment of the present invention is applied, Fig.
Figs. 11 to 12 are plan views after each layer of the PCB core-structured circuit block according to the second embodiment of the present invention is laminated.
FIG. 13 is a perspective view showing a rectangular shape of the PCB core circuit block formed in the earth leakage breaker to which the AC and DC leakage current detection devices having the multi-layered PCB structure according to the second embodiment of the present invention is applied, And FIG.
FIG. 15 is an exemplary view illustrating a region of a PCB core circuit block formed in an earth leakage breaker to which an AC and DC leakage current detection device having a multi-layered PCB structure according to an embodiment of the present invention is applied.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of an earth leakage breaker to which an AC (AC) and DC (DC) leakage current detection device having a multi-layered PCB core structure according to the present invention is applied will be described in detail.

FIG. 3 is a view schematically showing a circuit of a conventional earth leakage breaker, and FIG. 4 is an exemplary view schematically showing a circuit of an earth leakage breaker to which an AC and DC leakage current detection device having a multi-layered PCB structure according to the present invention is applied.

As shown in Fig. 3, various components for detecting the leakage current amount are complicated based on the control circuit portion for controlling the operation of the trip coil 10 and the trip coil. However, the multi- When the current detecting element having the current detecting element is introduced, as shown in Fig. 4, the trip coil and the control circuit portion may be formed on the circuit board.

Accordingly, the space occupied by various parts will be greatly reduced, and the assembling time for assembling various parts can be eliminated, thereby greatly reducing the manufacturing time.

In addition, a control circuit section for operating the trip coil is constructed by detecting the above-mentioned leakage current on the electronic circuit substrate 3500 including the trip coil 7 and the PCB 308 of the present invention Since the operation principle of the control circuit is a general technique, a detailed description will be omitted.

FIG. 5 is a perspective view of an electronic circuit board including a PCB core circuit block and a trip coil of an earth leakage breaker to which an AC and DC leakage current detection device having a multi-layered PCB structure according to the present invention is applied, Which is a perspective view before being assembled.

As shown in FIG. 5, the electronic circuit substrate 3500 of the present invention constitutes a PCB body circuit block 3000 for detecting a leakage current on one side. As shown in the figure, A through hole 80 is formed at a central portion of the circuit block so that the wires 70 can be penetrated. Specifically, the through hole 80 is formed at the center of the circuit block. The through holes are formed along the circumference of the through holes to penetrate the wires 70 to detect the leakage current, so that leakage currents generated in the through wires can be detected.

In addition, the trip coil 7 is formed on one side of the PCB core circuit block, and the knob 3 configured in the circuit breaker is operated in the off state under the control of the control circuit part during the leakage current.

As shown in FIG. 6, between the bimetal 4 and the terminal 5 provided on the body 1 as the lower case of the earth leakage breaker, An electronic circuit board 3500 including a circuit portion is vertically installed on the body 1 in a direction orthogonal to the terminals 5 and 5 '.

That is, the earth leakage breaker installed and operated on the electric line (not shown in the figure) is operated at the time of overheat temperature (for example, at the center of the knob 3 for turning on / off the application of current from the earth leakage breaker to the load, The bimetal 4 is connected to a corresponding terminal 5 on one side of the body 1 through which an electric wire is connected via a wire (not shown) Through the through holes formed in the electronic circuit substrate 3500, and detects the leakage current amount.

In addition, the control circuit portion is mounted on an electronic circuit board in a chip-on-board (COB) form of a wafer state.

That is, the controller of the trip coil can be directly surface-mounted by wire bonding as a chip-on-board type in a wafer state instead of a dip (DIP) type, and the control circuit portion can be structured on the electronic circuit board to reduce the noise structurally.

In addition, since the control circuit portion is integrally formed with the trip coil on one electronic circuit board, it is possible to reduce the number of assembling steps and assembling time of the components as well as saving the wires to be wired.

As described above, since the PCB component circuit block 3000 for detecting a leakage current has a multi-layered PCB core structure, only a small space is required, so that it is possible to greatly reduce the size of components, So that it is possible to eliminate the defective rate.

The configuration and operation of the above-mentioned PCB component circuit block will be described in detail with reference to FIGS. 7 to 15. FIG.

FIG. 7 is a perspective view illustrating layers of the PCB component circuit blocks of the earth leakage breaker to which the AC and DC leakage current detection devices having a multi-layered PCB structure according to the first embodiment of the present invention are applied, Fig.

As shown in Figs. 7 to 8, the PCB having the multi-layered PCB core structure includes, from above, an upper coil pattern formation layer 100; A through hole layer (200); A central core layer 300 formed on the same horizontal line as the through hole layer; And a lower coil pattern formation layer (400).

The upper coil pattern forming layer 100 is formed of a nonmagnetic material and a plurality of coil patterns 120 connected to the lower coil pattern via the via hole 110 alternately from the lower side to the upper side are formed.

The through hole layer 200 is positioned below the upper coil pattern forming layer, and two holes are formed horizontally on both sides of the central core layer.

At this time, when viewed perpendicularly to the position of the via hole 110, a plurality of via holes 210 having the same size are formed.

At this time, the center core layer 300 is formed of the core material between the through holes.

Then, the lower coil pattern forming layer 400 is positioned below the through-hole layer and the central core layer, and is formed into a non-magnetic body.

A plurality of coil patterns 420 connected to each other through a plurality of via holes 410 alternately from the upper side to the lower side and from the lower side to the upper side are formed.

The coil pattern of the upper coil pattern forming layer 100 is connected to the via hole formed in the through hole layer 200 and the via hole formed in the lower coil pattern forming layer 400 on the lower side, Thereby providing a coil shape.

On the other hand, Ni-Fe based pemalloy is used as the magnetic material described in the invention.

In the case of the above-mentioned one embodiment, it is used for AC detection, which can also provide a cost saving (economical) effect incidentally.

FIG. 9 is a perspective view showing layers of a PCB core circuit block of an earth leakage breaker to which an AC and DC leakage current detection device having a multi-layered PCB structure according to a second embodiment of the present invention is applied, Fig.

Figs. 11 to 12 are plan views after each layer of the PCB core-structured circuit block according to the second embodiment of the present invention is laminated.

9 to 12, the PCB package according to the second embodiment includes an uppermost outer coil pattern formation layer 500; An inner core portion 1000 including an upper coil pattern forming layer 100, a through hole layer 200, a central core layer 300, and a lower coil pattern forming layer 400; And a lowermost outside coil pattern formation layer 600. [

The inner core portion 1000 is formed between the uppermost outer coil pattern forming layer 500 and the lowermost outer coil pattern forming layer 600.

More specifically, the uppermost outer coil pattern forming layer 500 is formed of a nonmagnetic material, and includes a plurality of outer coil patterns (hereinafter, referred to as " outer coil patterns " 520 are formed.

In addition, the lowermost outer coil pattern forming layer 600 is also formed of a non-magnetic material and disposed on the lower side of the inner core portion.

A plurality of outer coil patterns 620 are alternately connected from the upper side to the lower side and from the lower side to the upper side through the outer via holes 610.

In this case, the inner core portion includes the upper coil pattern forming layer 100, the through hole layer 200, the central core layer 300, and the lower coil pattern forming layer 400 as in the first embodiment The difference from the first embodiment is that the outer via holes for connecting the uppermost outer coil pattern forming layer 500 and the outer via holes formed in the lowermost outer coil pattern forming layer 600 form via holes at the same position in the vertical direction It is.

Specifically, the upper coil pattern forming layer 100 includes a plurality of coil patterns 120, which are positioned below the uppermost outer coil pattern forming layer and are alternately connected from the upper side to the lower side and from the lower side to the upper side via the via holes 110, And a plurality of outer via holes 130 having the same size are formed in the vertical position of the outer via holes formed in the uppermost outer coil pattern forming layer.

The through-hole layer 200 is located below the upper coil pattern forming layer and is formed horizontally on both sides of the central core layer. The through-hole layer 200 has the same vertical position of the via hole 110 and the outer via hole 130 A plurality of via holes 210 and an outer via hole 220 are formed.

The lower coil pattern formation layer 400 is disposed below the through-hole layer and the central core layer, and is formed of a non-magnetic material. The lower coil pattern formation layer 400 is connected to the lower coil pattern formation layer 400 through a plurality of via holes 410 alternately from the upper side to the lower side and from the lower side to the upper side A plurality of coil patterns 420 are formed and a plurality of outer via holes 430 of the same size are formed in a vertical position of the outer via holes 130. [

At this time, the PCB body block 3000 having a multi-layer PCB has a structure in which at least two internal core parts are laminated in order to perform the DC and AC detection functions of the fluxgate method.

Therefore, it is possible to detect the direct current and the alternating current by having the multi-layered fiber core structure of the flux gate type.

According to an additional aspect of the present invention, the PCB body circuit block 3000 having the laminated structure of the present invention may have any one of circular, triangular, square, and polygonal shapes having a central through- And the like.

In the embodiment of the present invention, a square was formed.

That is, since it has a shape for passing the electric wire in order to perform the current detecting operation, it may have a circular, triangular, square, or polygonal shape having a central passage hole through which the electric wire can pass.

The polygonal shape may be any shape provided that a center hole is formed at the center, such as a rhombic, hexagonal, or octagonal shape, and any shape that allows the wire to pass therethrough is within the scope of the present invention.

FIG. 13 is a perspective view showing a rectangular shape of the PCB core circuit block formed in the earth leakage breaker to which the AC and DC leakage current detection devices having the multi-layered PCB structure according to the second embodiment of the present invention is applied, And FIG.

13 to 13, in which a central passage hole is formed at a central portion in order to detect the electric current of the electric wire, and as shown in Fig. 13, a central passage hole is formed A rectangular shape, and a triangular shape in which a central passage hole is formed as shown in Fig. 14.

In the case of the conventional coil type current detection, since the coils are wound by using a winding machine, characteristics are inevitably changed due to unevenness in spacing, cross generation, and the like.

However, as shown in FIG. 13, in the case of the present invention, the pattern is formed while maintaining a constant gap, so that the overall shape of the patterns has a shape in which the coil is wound, so that uniform characteristics can be provided during mass production.

That is, if the coils are wound by a winding machine or a manual operation, the spacing between the coils may not be uniform, and coils may be united. In particular, even in a shape other than a circular shape,

For example, when a winding machine is used, only a circular detection element can be used. However, in the case of an elliptical shape, a rectangular shape with an angled corner, or a triangular shape, the gap must be unbalanced and uniform characteristics can not be provided.

In addition, as the industrial structure develops day by day, the structure of industrial machinery is changing to various forms.

For example, in the case of a current detecting element constituted in a solar inverter, a circle is unsuitable.

However, in the case of the present invention, various shapes can be applied to any industrial machine structure, but the effect of excelling in joining with the existing industrial machine structure without increasing the manufacturing cost is exerted.

In other words, since there is no human intervention and no mechanical error, it is possible to provide a uniform quality and miniaturization in size, and to exhibit a synergistic effect that various types of detection elements can be provided.

15 is a perspective view in which a rectangular detection element is cut in one area, and is a perspective view again taken along a broken-away perspective view, and is specifically shown in Figs. 7 to 12. Fig.

In the case of the second embodiment described above, the AC-CT function and the DC-CT function are performed.

That is, a composite measurement can be provided.

By applying the current detecting element having the multi-layered PCB core structure to the earth leakage breaker through the above-described configuration, a function of automatically shutting off when a current equal to or higher than a set value flows from the power supply line to the load side is provided.

It will be understood by those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It is to be understood, therefore, that the embodiments described above are to be considered in all respects as illustrative and not restrictive.

100: upper coil pattern forming layer
200: through hole layer
300: central core layer
400: Lower coil pattern forming layer
500: uppermost outer coil pattern forming layer
600: Lowermost outside coil pattern forming layer
3000: PCB core structure circuit block
3500: Electronic circuit board

Claims (5)

In an earth leakage breaker having an AC and DC leakage current detection element having a multi-layered fiber core structure,
An upper coil pattern forming layer 100 formed of a non-magnetic material and having a plurality of coil patterns 120 connected to each other via a via hole 110 alternately from the lower side and the lower side to the upper side;
A through hole layer 200 which is formed below the upper coil pattern forming layer and is formed horizontally on both sides of the central core layer and has a plurality of via holes 210 of the same size at the positions of the via holes 110, ;
A central core layer 300 formed of a core material between the through holes;
A plurality of coil patterns 420 are formed on the lower side of the through hole layer and the central core layer and are formed of a nonmagnetic material and are connected alternately from the upper side to the lower side and from the lower side to the upper side via a plurality of via holes 410 And a lower coil pattern forming layer (400), wherein a through hole (80) is formed at the center, and the coil pattern is formed along the periphery of the through hole to insulate the wire 70, a plurality of semiconductor integrated circuit blocks 3000,
And a trip coil (7) formed on one side of the PCB core circuit block for operating the knob (3) configured in the circuit breaker under the control of the control circuit part (3300) And a substrate (3500), wherein the AC and DC leakage current detection elements have a multi-layered PCB core structure.
In an earth leakage breaker having an AC and DC leakage current detection element having a multi-layered fiber core structure,
An uppermost outer coil pattern formation layer 500 formed of a nonmagnetic material and having a plurality of outer coil patterns 520 connected to the upper and lower sides through an outer via hole 510 alternately from the lower side to the upper side;
A plurality of coil patterns 120 formed on the uppermost outer coil pattern forming layer and connected to each other via a via hole 110 alternately from the upper side to the lower side and from the lower side to the upper side, An upper coil pattern forming layer 100 in which a plurality of outer via holes 130 of the same size are formed at the positions of the via holes,
A via hole 210 having the same size at the positions of the via hole 110 and the outer via hole 130 and a via hole 210 having the same size at the positions of the via hole 110 and the outer via hole 130 are formed on both sides of the upper coil pattern forming layer, A through hole layer 200 in which a plurality of holes 220 are formed,
A central core layer 300 formed of a core material between the through holes,
A plurality of coil patterns 420 are formed on the lower side of the through hole layer and the central core layer and are formed of a nonmagnetic material and are connected to each other via a plurality of via holes 410 alternately from the upper side to the lower side and from the lower side to the upper side And a lower coil pattern forming layer 400 formed with a plurality of outer via holes 430 of the same size at the positions of the outer via holes 130;
And a plurality of outer coil patterns 620 which are formed on the lower side of the inner core portion and connected to each other via the outer via holes 610 from the upper side to the lower side and from the lower side to the upper side, And a pattern forming layer 600,
And a through hole 80 is formed at the center. The coil pattern is formed along the periphery of the through-hole and has a passive core structure circuit block 3000 through which the electric wires 70 to be detected for leakage current are passed through the through- ,
And a trip coil (7) formed on one side of the PCB core circuit block for operating the knob (3) configured in the circuit breaker under the control of the control circuit part (3300) And a substrate (3500), wherein the AC and DC leakage current detection elements have a multi-layered PCB core structure.
The method according to claim 1,
In the PCB core circuit block 3000,
AC leakage detection circuit having AC and DC leakage current detection elements having a multi-layered PCB core structure.
3. The method of claim 2,
Wherein at least two internal core portions are stacked to perform DC and AC detection of the fluxgate type, and an AC / DC leakage current detection device having a multi-layered PCB core structure is applied.
3. The method according to claim 1 or 2,
In the PCB core circuit block 3000,
And has a shape of a circle, an ellipse, or a polygonal shape in which a through-hole (80) through which a wire can pass is formed at the center. Earth leakage breaker.

Images