KR101840135B1 - Earth leakage circuit braker and manufacturing method of the same - Google Patents

Abstract

The present invention relates to an earth leakage circuit breaker which is implemented to embed a test device integrated with a zero current transformer with a 4-pin type, and a manufacturing method thereof. The zero current transformer integrally includes the test device so that a difference of a leakage current amount is sensed. A main body mounts the zero current transformer so that it is determined whether a current is leaked according to the sensed difference of the leakage current amount and blocks the leakage current by controlling a trip device. Accordingly, the present invention can obtain a safe structure, reduce manufacturing costs and simplify manufacturing processes.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ground leakage circuit breaker,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an earth leakage breaker and a method of manufacturing the same, and more particularly, to an earth leakage breaker implemented with a 4-pin (4pin-type) .

The circuit breaker detects a video current with a video current transformer when a current leakage occurs and drives a solenoid that operates the switch when a video current is detected in the video transformer to open the switch opened and closed by the solenoid, The power supplied to the load side is cut off.

The circuit breaker is provided with a test switch. When the test switch is operated, a video current is flowed artificially through the video current transformer to trip the circuit breaker to confirm whether the circuit breaker is normally operated during installation or operation. You will see if it is working. However, when there is a failure such as a delay of the trip time when the earth leakage breaker is in operation, there is no way to confirm the failure, and when the power is supplied to the load side, the test switch is operated to trip the earth leakage breaker , The power to the load side is cut off and the load side connected devices must be restarted after the test.

Korean Registered Patent No. 10-0703924 (registered on Mar. 29, 2007) discloses a circuit breaker having a self-test function, and is provided between a power source side and a load side, switch; A drive circuit for operating the main switch; A leakage current detection circuit for detecting a leakage current generated in the lines connecting the power source side and the load side; A self-test line connected between the power supply side and the ground, the self-test line including a first switching device, and generating a leakage current in the leakage current detection circuit when the first switching device conducts; A leakage current detection circuit for receiving a leakage current detected from a leakage current detection circuit and generating a first output signal; Generates a second output signal for operating the driving circuit by the first output signal of the leakage current detection circuit and generates a pulse for conducting the first switching element when the first output signal is not present, And a self-test circuit for receiving the third output signal from the leakage current detection circuit in response to the occurrence of the leakage current and determining that the difference between the generation time of the pulse and the input time of the third output signal is within a predetermined time . According to the disclosed technology, it is possible to confirm whether or not the earth leakage breaker is normally operating while power is being supplied from the power source side to the load side, and the time that the earth leakage breaker trips after the occurrence of the short circuit is self- .

Korean Patent No. 10-0992838 (Registered on November 22, 2010) discloses a printed board assembly (PBA) assembly method of an earth leakage breaker that shortens the assembly time of a leakage current test line. According to the disclosed technique, there is provided a method of manufacturing a semiconductor device, comprising: forming two holes having a pattern formed therein so that a test current flows through a periphery of a PCB on which a zero current transformer (ZCT) having a circular through hole is mounted; Mounting on a PCB mounting the video deflector; And a step of brazing the jumper to the wave soldering equipment in a state in which the jumper is inserted into the two holes and the two holes are connected in a state in which the video current transformer is mounted, so that the conventional test current line is inserted into the ZCT Since there is no post-process after soldering, the work can be greatly simplified and the number of workers can be greatly reduced, the manufacturing cost can be reduced, and the production amount can be increased with the same number of workers.

According to the conventional technique as described above, one of the power lines is applied to the ZCT through-hole, so that a small-sized earth leakage breaker having a high sensitivity of 15 (mA) or less or 30 (mA) is formed in the field. The biggest problem is that the leakage current imbalance of the image current transformer occurs due to passing through one of the two power lines due to process simplification. The leakage current imbalance should be applied to a small leakage circuit breaker with a high sensitivity of 15 (mA) or less or 30 (mA) since the leakage current is always flowing due to circuit problems at a minimum of 1.0 (mA) , It is difficult to obtain quality and malfunction due to the deviation of the sensitivity rating management even if the leakage current flows only a little at the time of current field or product mass production. Thus, there is a problem that a product containing such a malfunction type is produced.

According to the above-described conventional technique, when the malfunctioning inclusion product described above is applied at the time when the capacitive leakage current is higher than before as the LED lamp is generally applied to the load of the earth leakage breaker, the great confusion will increase There is also a problem.

In the conventional technique as described above, there is a method of directly passing a test wire and a test jump pin to the main PCB of the earth leakage breaker with a video current transformer. However, this causes a rise in cost, There is a problem in that there is a structural risk that shorting due to peeling off of the coating on the power source side RN may occur due to leakage or dielectric breakdown in a metal part such as a metal sheath or the like due to lack of sheath.

Korean Patent No. 10-0703924 Korean Patent No. 10-0992838

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide an earth leakage breaker and a method of manufacturing the same, which are implemented by incorporating a test apparatus integrated into a video current transformer of a 4-pin type .

According to one aspect of the present invention, there is provided a means for solving the above-mentioned problems, comprising: a video current transformer provided with a test apparatus as a whole and for detecting a difference in a leakage current amount; And a body for mounting the image current transformer to determine whether or not a short circuit has occurred according to a difference in the amount of leakage current detected by the image current transformer and to control a trip device to cut off an electric leakage.

In one embodiment, the transducer is formed in a 4-pin type.

In one embodiment, the video current transformer is provided with a test wire applied therein.

In one embodiment, the image deflector is characterized in that an insulating coating film is formed on an outer surface.

In one embodiment, the image deflector includes: an inner case; A video transformer core formed in the inner case; A transformer main winding composed of a first coil and a second coil and wound around the inner case; An outer case having a through hole at an inner center thereof and surrounding the inner case, the image transformer core, and the main transformer main winding line around the through hole; A test wire case formed externally on one side of the through hole of the outer case; A test wire auxiliary winding formed of a third coil, a fourth coil, and a penetrating wire and formed on the main current transformer main winding line, the penetrating wire being embedded in the test wire case; Two test pins each having one side internally formed on the inner side of the outer case and the other side protruding outwardly, one side connected to the test wire auxiliary winding respectively, and the other side connected to the main body respectively; And one side of which is connected to the main body of the video transformer main body and the other side of which is connected to the main body, .

In one embodiment, the main transformer main winding line may be soldered to the transformer pins by peeling off the ends of the first coil and the second coil.

In one embodiment, the primary winding of the video transformer is characterized in that an insulating coating film for insulation by coating coating operation is formed on the outside.

In one embodiment, the main transformer main line is formed with an insulating paper and a coating film for insulation on the outside.

In one embodiment, the video deflector comprises: a video deflector core; An insulation coating film for insulation by coating operation on the outer side of the frame transformer core; A transformer main winding composed of a first coil and a second coil and wound on the outer side of the insulating coating film; An outer case having a through hole at an inner center thereof and surrounding the inner case, the image transformer core, and the main transformer main winding line around the through hole; A test wire case formed externally on one side of the through hole of the outer case; A test wire auxiliary winding formed of a third coil, a fourth coil, and a penetrating wire and formed on the main current transformer main winding line, the penetrating wire being embedded in the test wire case; Two test pins each having one side internally formed on the inner side of the outer case and the other side protruding outwardly, one side connected to the test wire auxiliary winding respectively, and the other side connected to the main body respectively; And one side of which is connected to the main body of the video transformer main body and the other side of which is connected to the main body, .

In one embodiment, the test wire case is spaced apart from the prism wire of the video converter by a certain distance and is formed on one side of the through hole of the outer case.

In one embodiment, the test wire auxiliary winding is characterized in that the test winding is wound once or more on the main deflector line of the video deflector.

In one embodiment, the test wire auxiliary winding is characterized in that the ends of the third coil and the fourth coil are peeled off and soldered to the test pin, respectively.

In one embodiment, the test wire auxiliary winding is characterized in that the insulating tape and the insulating part are inserted between the upper and lower main wirings of the bridge transformer, and the through wire is sealed with a sealing epoxy.

In one embodiment, the test wire auxiliary winding is wound on the outside of the inner case at least once or more.

In one embodiment, the test wire auxiliary winding is characterized in that an insulating coating film for insulation is formed on the outer side by coating coating operation.

In one embodiment, the test wire auxiliary winding is characterized in that the through wire is formed of a wire having a coil thickness of 0.12 to 0.18 mm or more and an insulating coating thickness of 0.003 to 0.009 mm or more.

' 형태로 내장 형성되고, 다른 일측이 외부로 돌출 형성되어 상기 본체에 각각 접속된 테스트핀; 및 일측이 상기 외부케이스의 다른 일측 내부에 내장 형성되고 다른 일측이 외부로 돌출 형성되어, 일측이 상기 영상변류기주권선에 각각 접속되며, 다른 일측이 상기 본체에 각각 접속된 두 개의 영상변류기핀을 포함하는 것을 특징으로 한다.In one embodiment, the image deflector includes: an inner case; A video transformer core formed in the inner case; A transformer main winding composed of a first coil and a second coil and wound around the inner case; An outer case having a through hole at an inner center thereof and surrounding the inner case, the image transformer core, and the main transformer main winding line around the through hole; A test pin case formed externally inside and outside the one side of the outer case; One end of which is connected to the test pin case,

&Quot;, and the other side of the test pin is protruded outwardly and connected to the body, respectively; And two side transformer pins, one side of which is internally formed in the other side of the outer case and the other side of which is protruded to the outside, one side of which is connected to the main transformer main winding line, .

According to another aspect of the present invention, there is provided a means for solving the above-mentioned problems, wherein a frame of a transformer is built in an inner case, a first coil and a second coil are wound on the outer side of the inner case, ; Removing the coil line of the main transformer main line and soldering the transformer pins formed on the inner side of the outer case, respectively; Performing a primary inspection on the main transformer line; Forming an insulating coating layer on the outside of the main transformer line for insulation by coating coating operation; Forming a test wire auxiliary winding by forming a third coil and a fourth coil on the main transformer main winding line and forming a through wire in a test wire case formed on an outer side of the through hole of the outer case; Releasing the coil wire of the test wire auxiliary winding and connecting solder to test pins formed on the other side of the outer case; Performing an under voltage test and a primary test on the test wire auxiliary winding; Performing a secondary test in a state where the main transformer line and the test wire auxiliary winding are coupled to each other; And performing a final inspection after the outer case is sealed with a sealing epoxy. The present invention also provides a method of manufacturing an earth leakage breaker.

According to the effects of the present invention, it is possible to provide an earth leakage breaker and a method of manufacturing the same, which are implemented so as to incorporate a test apparatus integrated into a video current transformer of a 4-pin type (4pin-type) Therefore, when applied to a small-sized earth leakage breaker with a high sensitivity of 15 (mA) or less or 30 (mA), the leakage current generated in the field or product mass production does not deviate from the sensitivity rating management range, In addition, as the LED lighting device among the load of the circuit breaker is generally applied, even if the capacitive leakage current is higher than before, great confusion is not exerted, and it is not only structurally safe but also can simplify the leakage testing device, And simplify the process.

1 is a view for explaining an earth leakage breaker according to an embodiment of the present invention.
FIGS. 2 and 3 are views for explaining the video current transformer shown in FIG. 1 as a first example.
FIGS. 4 and 5 are views for explaining the video current transformer in FIG. 1 as a second example.
6 is a view for explaining a method of manufacturing an earth leakage breaker according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. However, the description of the present invention is merely an example for structural or functional explanation, and the scope of the present invention should not be construed as being limited by the embodiments described in the text. That is, the embodiments are to be construed as being variously embodied and having various forms, so that the scope of the present invention should be understood to include equivalents capable of realizing technical ideas. Also, the purpose or effect of the present invention should not be construed as limiting the scope of the present invention, since it does not mean that a specific embodiment should include all or only such effect.

The meaning of the terms described in the present invention should be understood as follows.

The terms "first "," second ", and the like are intended to distinguish one element from another, and the scope of the right should not be limited by these terms. For example, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component. It is to be understood that when an element is referred to as being "connected" to another element, it may be directly connected to the other element, but there may be other elements in between. On the other hand, when an element is referred to as being "directly connected" to another element, it should be understood that there are no other elements in between. On the other hand, other expressions that describe the relationship between components, such as "between" and "between" or "neighboring to" and "directly adjacent to" should be interpreted as well.

It should be understood that the singular " include "or" have "are to be construed as including a stated feature, number, step, operation, component, It is to be understood that the combination is intended to specify that it does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

All terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Commonly used predefined terms should be interpreted to be consistent with the meanings in the context of the related art and can not be interpreted as having ideal or overly formal meaning unless explicitly defined in the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an earth leakage breaker and a method of manufacturing the same according to an embodiment of the present invention will be described in detail with reference to the drawings.

1 is a view for explaining an earth leakage breaker according to an embodiment of the present invention.

Referring to FIG. 1, the earth leakage breaker 100 includes a main body 110 and a video transformer 120 in which a test apparatus is built in a main PCB to determine whether a function is operated.

The main body 110 determines whether or not a short circuit has occurred according to a difference in the amount of leakage current transmitted from the image deflector 120 as a main PCB, and controls the trip device according to a result of the determination.

The video current transformer 120 is mounted on the main body 110 and senses the difference of the leakage current amount and transmits the detected leakage current amount difference to the main body 110.

In one embodiment, the video transducer 120 is an integral video transducer with a test device and is formed in a 4-pin type.

In one embodiment, the transducer 120 may include a test wire applied therein, and may also form an insulating coating on the outer surface thereof.

The earth leakage breaker 100 having the above-described configuration is constructed so as to incorporate a test device integrated in the video transformer 120 of the earth leakage breaker 100 into a 4-pin type to perform an electrical leak detection, , The connection pin of the video transformer winding, the winding of the test wire, and the connection terminal of the test wire winding, the short circuit is checked according to the difference in the amount of the leakage current inputted from the video current transformer 120, The leakage current imbalance of the voltage transformer 120 does not occur and the voltage applied to the current field or the product The leakage current generated during the mass production does not deviate from the sensitivity rating management range, so that it is easy to secure the quality and does not cause malfunctions. In addition, , Is not a big mess weighting even before the capacitive leakage current is increased, as well as safety in structure, it is possible to simplify the short circuit test device, it is possible to simplify the manufacturing process, reducing the manufacturing cost according to the applied to.

The earth leakage breaker 100 having the above-described configuration may be sealed after adjusting the characteristics of the video current transformer 120 and mapping the adjusted characteristic current transformer 120 to the test apparatus.

FIGS. 2 and 3 are views for explaining the video current transformer shown in FIG. 1 as a first example.

2 and 3, the video transformer 120 includes an inner case 111, a video transformer core 112, a main transformer main transformer 113, an outer case 114, a test wire case 115, A test wire auxiliary winding 116, two test pins 117, and two frame deflector pins 118.

The inner case 111 houses a video transformer core 112.

The video transformer core 112 is built in the inner case 111.

The main transformer main winding line 113 is composed of a first coil and a second coil as main winding wires and is wound on the outer side of the inner case 111. The first coil and the second coil are extended, Respectively.

In one embodiment, the main deflector line 113 of the deflector main breaker 113 may devolatethe ends of the first and second coils and solder the corresponding deflected ends to the deflector pins 118, respectively.

In one embodiment, the main transformer main line 113 may be formed on the outer side with an insulating coating film 119 for insulation by a film coating operation, or may be formed with insulating paper and a coating film (for example, a urethane-modified acrylic coating agent So that the through wire of the test wire auxiliary winding 116 and the withstand voltage can be maintained.

The outer case 114 has a through hole at the center of the inner case and a test wire case 115 is formed on one side of the through hole and the inner case 111 and the image transformer core 112 are formed around the through hole, And a main transformer main line 113. The test pin 117 is built in one side of the main transformer main body 113 and the main transformer pin 118 is formed in the other side of the inside.

The test wire case 115 is formed on one side of the through hole of the outer case 114 so as to embed a through wire of the test wire auxiliary winding 116.

The test wire case 115 is formed at one side of the through hole of the outer case 114 so as to be spaced apart from the main transformer main line 113 by a predetermined distance And the through wires of the test wire auxiliary coils 116 can be spaced apart from each other by a predetermined distance.

The test wire auxiliary winding 116 is composed of a third coil, a fourth coil and a penetrating wire as secondary coils, a third coil and a fourth coil are formed on the video converter main winding line 113, The fourth coil is extended and connected to the test pin 117, and the penetrating wire is built in the test wire case 115.

In one embodiment, the test wire auxiliary winding 116 may be a secondary winding for leakage break current and may wind a separate test-wire to the video transformer mains lead 113 one or more times And the ends of the third coil and the fourth coil may be peeled off, and the peeled ends may be soldered to the test pins 117, respectively.

In one embodiment, the test wire auxiliary winding 116 may seal the penetrating wire with a sealing epoxy after inserting the insulation tape and insulating parts between the upper and lower sides of the main deflector 113 of the deflector.

In one embodiment, the test wire auxiliary winding 116 may be wound once or more outside of the inner case 111, unlike that shown in FIG. 2, An insulating coating film for insulation may be formed.

In one embodiment, the test wire auxiliary winding 116 may be formed such that the penetrating wire is formed of a wire having a coil thickness of 0.12 to 0.18 mm or more (i.e., enamel wire) and an insulating coating thickness of 0.003 to 0.009 mm or more, The test pin 117 is wound around the main transformer 113 of the transformer main transformer 113 for one turn or more so as to increase the insulation resistance and to have a performance of 1.3 kV or more (withstand voltage performance) Respectively. For example, the through-wire may be a polyurethane copper wire (type 2 UEW (polyurethane enamelled wire)) of a coil type 2, a conductor diameter of 0.15 mm, a minimum film thickness of about 0.006 mm, and an outer diameter of a maximum finished product of 0.177 mm.

The test pin 117 is a test apparatus connection terminal for each of the third coil and the fourth coil of the test wire auxiliary winding 116. One end of the test pin 117 is internally formed And one side is connected to the third coil and the fourth coil of the test wire auxiliary winding 116 respectively and the other side is connected to the main body 110 respectively Pattern connected and connected by a test switch and resistor).

The voltage transformer pin 118 is a power supply terminal and a ground terminal for the first coil and the second coil of the video transformer main winding 113 and is connected to the other inner side of the outer case 114 One side of which is connected to the first coil and the second coil of the main current transformer 113 and the other side of which is connected to the main body 110, respectively.

2, the video transformer 120 may not include the inner case 111. In this case, the outer surface of the video transformer core 112 may be coated with an insulating coating film And the main transformer main winding line 113 may be wound on the outer side of the insulating coating film.

FIGS. 4 and 5 are views for explaining the video current transformer in FIG. 1 as a second example.

4 and 5, the video transformer 120 includes an inner case 111, a video transformer core 112, a main transformer main transformer 113, an outer case 114, a test pin case 215, A test pin 217, and two frame deflector pins 118. Here, the inner case 111, the video transformer core 112, the video transformer main winding line 113, the outer case 114, and the video transformer pin 118 are similar to those of FIGS. 2 and 3, Omit it.

The video converter main winding line 113 may be formed on the upper side close to the test pin 217 to form an insulating coating film 119 for insulation by a film coating operation or may be formed of insulating paper and a coating film such as a urethane- ) May be formed on the test pin 217 so that the withstand voltage of the test pin 217 can be maintained.

The test pin case 215 is formed on the inside and the outside of one side of the outer case 114, respectively, to house the test pin 217 therein.

' 형태의 핀 및 점프와이어인 테스트핀(217)을 인서트(insert)해 줄 수 있다. 또한, 테스트핀케이스(215)는, 외부케이스(114)와 완전 독립 분리된 형태의 사출물로 형성될 수 있다.In one embodiment, the test pin case 215 is a dedicated hole (i.e., insulating hole) insulated with a free space separate from the outer case 114,

&Quot;, and a test pin 217 which is a jump wire. In addition, the test pin case 215 may be formed as an externally separated form separated from the outer case 114.

' 형태의 핀 및 점프와이어(즉, 테스트장치접속단자)로서, 일측이 테스트핀케이스(215)에 내장 형성되고, 다른 일측이 외부로 돌출 형성되어 본체(110)에 각각 접속(즉, PCB측 동박면에 패턴 연결되어 테스트 스위치 및 저항으로 접속)된다.The test pin 217 is'

(I.e., a test apparatus connection terminal), one side of which is internally formed in the test pin case 215 and the other side of which is protruded to the outside and connected to the main body 110 Pattern-connected to the copper foil surface and connected with a test switch and resistor).

6 is a view for explaining a method of manufacturing an earth leakage breaker according to an embodiment of the present invention.

6, after the image transformer core 112 is built in the inner case 111 by using an inserting device or a device, the transformer core 112 is wound around the outer case of the inner case 111 with a main winding wire The first coil and the second coil are wound to form the main transformer main winding line 113 (S401).

In forming the main transformer main winding 113 in step S401, the main transformer pin 118 may be installed on one side of the inner side of the outer case 114 so that the other side of the main transformer 113 is protruded outward .

After forming the main transformer main winding line 113 in step S401 described above, the coil line of the main transformer main winding line 113 is removed using a separator or the like, and then the solder is removed by using a soldering machine or a device, The coil wire is soldered to the frame deflector pins 118 formed on the inner side of the outer case 114 (S402).

After the coil line is soldered in the above-described step S402, a primary inspection (for example, energization, leakage, withstanding voltage test, etc.) of the main transformer main line 113 is performed using an inspection equipment or the like (S403 ).

After performing the primary inspection of the main transformer 113 of the video transformer in the above-described step S403, an insulating coating film (not shown) is formed on the outer side of the main transformer main line 113 by a coating machine or a device 119 are formed (S404).

After forming the insulating coating film 119 in the above-described step S404, the third coil and the fourth coil are formed on the main current transformer main line 113 by the auxiliary winding using a winding machine or the like, And the test wire auxiliary winding 116 is formed in the case 115 (S405).

In forming the test wire auxiliary winding 116 in step S405, the test pin 117 may be installed such that one side is internally formed on the other side of the inside of the outer case 114 and the other side is protruded outward .

After forming the test wire auxiliary winding 116 in step S405 described above, the coil wire of the test wire auxiliary winding 116 is removed using a separator or the like, and then the coil wire of the test wire auxiliary winding 116 is removed using a solder apparatus, The coil wires are soldered to the test pins 117 formed on the other side of the inside of the outer case 114 (S406).

After the coil wire is soldered in step S406, the withstand voltage test for the test wire auxiliary winding 116 is performed using an inspection equipment or the like, and the primary test for the test wire auxiliary winding 116 (for example, , Energization, leakage, etc.) (S407).

After the primary inspection for the test wire auxiliary winding 116 is performed in the above-described step S407, the main current transformer 113 and the test wire auxiliary winding 116 are coupled to each other by using an inspection equipment or the like. And car inspection is performed (S408).

After the secondary inspection is performed in step S408, the outer case 114 is sealed with a sealing epoxy using a sealing device or a device (S409), and a final inspection is performed using an inspection equipment or the like (S410).

As described above, the embodiment of the present invention is not limited to the above-described apparatus and / or method, but may be implemented by a program for realizing a function corresponding to the configuration of the embodiment of the present invention and a recording medium on which the program is recorded And the present invention can be easily implemented by those skilled in the art from the description of the embodiments described above. While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, It belongs to the scope of right.

100: Earth leakage breaker
110:
120: Video current transformer
111: inner case
112: Video current transformer core
113: Video current transformer main line
114: outer case
115: Test wire case
116: test wire auxiliary winding
117, 217: Test pin
118: Video current transformer pin
119: Insulation coating film
215: Test pin case

Claims (10)

delete delete delete delete A video current transformer for detecting a difference in the amount of leakage current by integrally providing a test apparatus; And a main body for mounting the image deflector, determining a short circuit according to a difference in leakage current detected by the image deflector, and controlling a trip device to cut off a short circuit.
The image deflector includes: an inner case; A video transformer core formed in the inner case; A transformer main winding composed of a first coil and a second coil and wound around the inner case; An outer case having a through hole at an inner center thereof and surrounding the inner case, the image transformer core, and the main transformer main winding line around the through hole; A test wire case formed externally on one side of the through hole of the outer case; A test wire auxiliary winding formed of a third coil, a fourth coil, and a penetrating wire, wherein a third coil and a fourth coil are formed on the main current transformer bridge, and a penetrating wire is formed in the test wire case; Two test pins each having one side internally formed on the inner side of the outer case and the other side protruding outwardly, one side connected to the test wire auxiliary winding respectively, and the other side connected to the main body respectively; And one side of which is connected to the main body of the video transformer main body and the other side of which is connected to the main body, ;
The test wire auxiliary winding may include a plurality of '

', A third coil and a fourth coil are extended and connected to the test pins, respectively; The penetrating wire is formed with a wire having a coil thickness of 0.12 to 0.18 mm and an insulating coating thickness of 0.003 to 0.009 mm;
Wherein one end of the test pin is connected to the PCB-side copper foil surface of the main body in a pattern-connected manner, and is connected to a test switch and a resistor.
6. The image transformer according to claim 5,
And the ends of the first coil and the second coil are peeled off and soldered to the pin sinker pins.
6. The image transformer according to claim 5,
And an insulating coating film for insulation by coating coating operation is formed on the outer side.
A video current transformer for detecting a difference in the amount of leakage current by integrally providing a test apparatus; And a main body for mounting the image deflector, determining a short circuit according to a difference in leakage current detected by the image deflector, and controlling a trip device to cut off a short circuit.
The video transformer includes a video transformer core; An insulation coating film for insulation by coating operation on the outer side of the frame transformer core; A transformer main winding composed of a first coil and a second coil and wound on the outer side of the insulating coating film; An outer case having a through hole at an inner center thereof and forming a built-in main current transformer core and the main transformer core around the through hole; A test wire case formed externally on one side of the through hole of the outer case; A test wire auxiliary winding formed of a third coil, a fourth coil, and a penetrating wire, wherein a third coil and a fourth coil are formed on the main current transformer bridge, and a penetrating wire is formed in the test wire case; Two test pins each having one side internally formed on the inner side of the outer case and the other side protruding outwardly, one side connected to the test wire auxiliary winding respectively, and the other side connected to the main body respectively; And one side of which is connected to the main body of the video transformer main body and the other side of which is connected to the main body, ;
The test wire auxiliary winding may include a plurality of '

', A third coil and a fourth coil are extended and connected to the test pins, respectively; The penetrating wire is formed with a wire having a coil thickness of 0.12 to 0.18 mm and an insulating coating thickness of 0.003 to 0.009 mm;
Wherein one end of the test pin is connected to the PCB-side copper foil surface of the main body in a pattern-connected manner, and is connected to a test switch and a resistor.
A video current transformer for detecting a difference in the amount of leakage current by integrally providing a test apparatus; And a main body for mounting the image deflector, determining a short circuit according to a difference in leakage current detected by the image deflector, and controlling a trip device to cut off a short circuit.
The image deflector includes: an inner case; A video transformer core formed in the inner case; A transformer main winding composed of a first coil and a second coil and wound around the inner case; An outer case having a through hole at an inner center thereof and surrounding the inner case, the image transformer core, and the main transformer main winding line around the through hole; A test pin case formed externally inside and outside the one side of the outer case; One end of which is connected to the test pin case,

&Quot;, and the other side of the test pin is protruded outwardly and connected to the body, respectively; And two side transformer pins, one side of which is internally formed in the other side of the outer case and the other side of which is protruded to the outside, one side of which is connected to the main transformer main winding line, ;
The test wire auxiliary winding is formed such that the penetrating wire is formed with a wire having a coil thickness of 0.12 to 0.18 mm and an insulating coating thickness of 0.003 to 0.009 mm;
Wherein one end of the test pin is connected to the PCB-side copper foil surface of the main body in a pattern-connected manner, and is connected to a test switch and a resistor.
Forming a video transformer core in an inner case and winding a first coil and a second coil on the outer side of the inner case to form a main transformer main winding line; Removing the coil line of the main transformer main line and soldering the transformer pins formed on the inner side of the outer case, respectively; Performing a test for energization, leakage, and withstand voltage by a primary inspection of the main transformer line; Forming an insulating coating layer on the outside of the main transformer line for insulation by coating coating operation; Forming a test wire auxiliary winding by forming a third coil and a fourth coil on the main transformer main winding line and forming a through wire in a test wire case formed on an outer side of the through hole of the outer case; Releasing the coil wire of the test wire auxiliary winding and connecting solder to test pins formed on the other side of the outer case; Performing a test of energization, leakage, and withstand voltage with a primary test on the test wire auxiliary winding; Performing a secondary test in a state where the main transformer line and the test wire auxiliary winding are coupled to each other; And sealing the outer case with a sealing epoxy to perform a final inspection;
The test wire auxiliary winding is characterized in that the penetrating wire is formed of a wire having a coil thickness of 0.12 to 0.18 mm and an insulating coating thickness of 0.003 to 0.009 mm;
Wherein the test pin is pattern-connected to the PCB-side copper surface of the main body of the main body, and the other end of the test pin is connected to a test switch and a resistor.

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