KR20200063607A - Arc-break Signal Converter - Google Patents

Abstract

The present invention relates to an arc-blocking signal converter which is inserted and connected to an upper side or a lower side of an existing blocking device such as an earth leakage breaker installed on a single-phase or three-phase line and the like to block an arc by blocking power by using the existing blocking device in the event of a harmful arc. To this end, the present invention is inserted and installed in the middle of a distribution panel wiring, and is configured of a single product which detects the arc of each phase and converts a harmful arc signal into a blocking signal which operates the existing installation circuit breaker. An LED indicator which can change display color and flashing status is configured to display a power blocking cause and current status of each branch of a distribution panel.

Description

Arc-break signal converter

The present invention relates to an arc-blocking signal converter, and more specifically, by inserting and installing in the middle of a single-phase or three-phase power wiring, when a harmful arc occurs, a blocking device installed on the power line is operated to cut off the arc so that the power can be cut off. The present invention relates to an arc-blocking signal converter that converts to, and induces and extinguishes an arc discharge current radiating to the outside in a device and a line of each phase through an induction guide.

Electric fires are constantly occurring, and the share of electric fires is about 20% of the total fires. In Korea, short circuit breakers are installed to prevent electric fires. However, even in a situation where an earth leakage breaker is 100% installed in a general-purpose house, electric fires continue to occur.

The earth leakage breaker is a device that blocks overcurrent and leakage current, and has a great effect of preventing electric shock, but is insufficient in preventing electric fire caused by arcing. Therefore, until recently, electric fires have not been reduced and the amount of damage has been increasing.

In 1994, a joint investigation study was conducted to identify the causes of electric fires, mainly in the United States, as major disaster prevention organizations such as NFPA, CPSC, and UL. According to the report, 40% or more of electric fires in houses have arc failures (acr -fault).

Accordingly, in the United States, the Arc Fault Circuit (AFCI) was installed in the power circuit of the bedroom's bedroom load equipment since 2002, and since 2008, the arc breaker is installed in most of the electrical circuits such as the bedroom, living room, study room, and entrance of the house. The regulations were strengthened to install them. As a result, it was possible to obtain the effect that the electrical fire in the house is very reduced.

In Korea, arc breaker development has been attempted in recent years. For example, in addition to Korean Registered Patent No. 10-1124278 (hereinafter referred to as'Prior Art Literature'), many have been registered and published.

The above-mentioned prior art documents the circuit driving power of the AFCI circuit breaker that detects the arc fault and blocks the circuit from the current converter (CT) instead of the alternating current (AC) line, thereby preventing malfunction due to harmless arcs, and A configuration capable of confirming the line connection status is disclosed.

However, in the prior art including the above-mentioned prior art, development was focused on a single phase arc breaker that connects only two power lines (220V).

In the actual site, there are many three-phase three-wire or three-phase four-wire power facilities and equipment, and there is also a need for the development of a three-phase arc breaker because there is no continuous electrical fire due to continuous arcing.

An electric fault such as an arc may always occur in an earth leakage breaker, but it is difficult to detect the presence or absence of an arc.

The occurrence of arcs can lead to secondary damage, which can cause serious problems that can damage houses or buildings due to fires or other equipment that can be damaged by fire or debris from the arcs.

Korean Registered Patent No. 10-1292892

Therefore, the object of the present invention is to be devised in view of the above-mentioned points, so that even if a 3-phase arc circuit breaker is not independently installed, an existing circuit breaker such as an earth leakage circuit breaker is operated to cut off power to arc faults in single and 3 phases. It is to provide an arc-blocking signal converter.

An object of the present invention is to analyze the arc signal detected by the arc detection unit to drive the relay to cut off the current by the earth leakage breaker, and to use the arc position detection unit and the arc extinguishing member, the earth leakage breaker, the arc-blocking signal converter, each phase It is to provide an arc-blocking signal converter that induces and extinguishes an arc discharge current emitted from the line on the line through an arc guide needle.

Arc-blocking signal converter of the present invention for achieving the above object, in the arc-blocking signal converter to perform the blocking by the arc using a circuit breaker installed in the power line, the arc-blocking signal converter, each phase It is equipped with a connection terminal and inserted and installed in the middle of the power wiring. CT is connected to each phase of the connection terminal to detect harmful arcs generated in each phase, converts the detected arc signal to a blocking signal, and sends it to the circuit breaker. It is characterized by.

The circuit breaker is a circuit breaker, and the arc-blocking signal converter is characterized in that when a harmful arc signal is generated, the circuit breaker is operated.

Preferably, the arc-blocking signal converter receives a current detected from the CT and receives a band pass filter for passing only high-frequency characteristics that appear when an arc occurs, and receives a signal of high-frequency characteristics that has passed through the band-pass filter, and a reference level and An arc detection unit for detecting an arc signal generated for each phase by having an OP-AMP for comparing and outputting only the harmful arc and an A/D converter for converting the harmful arc waveform output from the OP-AMP into a digital form, the arc Analyze the arc signal detected by the detection unit to determine whether there is a harmful arc, and to determine whether it is a harmful arc, a microprocessor that drives a relay, a relay that is driven by the microprocessor, and sends a cutoff signal, and cuts off the power by the breaker operation It is configured to include a rechargeable battery so that the operating power can be supplied even at the time, and a power supply unit having a power switch for "on/off" the operation power supply from the battery.

The arc-blocking signal converter of the present invention has the following effects.

First, the connection terminals for each phase can be configured to be inserted and installed in the middle of the power wiring, making it easy to install not only in new power facilities, but also in existing power facilities.

Second, by converting harmful arcs generated on single-phase or three-phase lines into a blocking signal, the existing circuit breakers such as an earth leakage circuit breaker or an arc combined circuit breaker or other circuit breaker are operated to cut off the power, thereby developing an arc circuit breaker dedicated to three-phase power facilities and Technical and economic difficulties associated with manufacturing can be solved.

That is, even if an independent three-phase arc breaker product is not developed and manufactured, it is possible to block the arc in a three-phase power facility or equipment. Due to this, it is possible to cut off the arc in a single-phase as well as a three-phase power supply, thereby significantly reducing the electric fire accident.

Third, an accident arc can be detected for all phases of R, S, T, and N, thereby preventing a single-phase arc breaker malfunction due to an accident arc occurring in another branch of three phases.

Fourth, it is equipped with a communication function, and it is possible to monitor the cause of power interruption and the status of each power branch anytime, anywhere, so that it can quickly respond when a dangerous situation occurs due to electrical shutdown.

Fifth, in addition to the function of detecting the harmful arc and cutting off the power to the arc detection unit, the arc discharge current emitted from the arc breaker, converter, and line is sucked into the arc induction needle and extinguished, thereby causing the arc discharge current emitted externally to the ground. It is possible to efficiently prepare for or minimize the risk of fire by sending it out.

1 is a view showing an example of a box containing an arc-blocking converter according to an embodiment of the present invention.
2 is a view showing a side view of a receiving box with an arc-blocking converter according to an embodiment of the present invention.
3 is a view showing a position detection state of the arc signal of the arc position detection unit according to an embodiment of the present invention.
Figure 4 is a view showing the operation of the arc extinguishing member in a container having an arc-blocking converter according to an embodiment of the present invention.
5 is a view showing a detailed configuration of a moving block unit having an arc extinguishing member according to an embodiment of the present invention.
6 is an external perspective view showing an arc-blocking signal converter according to the present invention.
7 is a block diagram showing an arc-blocking signal converter according to an embodiment of the present invention.
8 is a block diagram showing an arc-blocking signal converter according to another embodiment of the present invention.
9 and 10 are schematic diagrams showing an installation form of an arc-blocking signal converter according to the present invention.
11 to 14 is a block diagram showing the connection form of the arc-blocking signal converter according to the present invention.

Specific features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings. Prior to this, when it is determined that the detailed description of the known functions and configurations related to the present invention may unnecessarily obscure the subject matter of the present invention, it should be noted that the detailed description is omitted.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

When described with reference to Figures 1 to 13 with respect to the receiver having an arc-blocking signal converter according to the present invention are as follows.

1 is a view showing an example of a box with an arc-blocking converter according to an embodiment of the present invention, and FIG. 2 is a view showing a side view of a box with an arc-blocking converter according to an embodiment of the present invention .

Receptacle 60 according to an embodiment of the present invention is a frame 61 forming a rectangular parallelepiped in the form of four square pillars vertically arranged to accommodate the arc-blocking converter and the earth leakage breaker therein, and the frame 61 It is formed on the lower surface of the lower plate 62 is formed with a plurality of inlet holes (62a) so that air is introduced, and the upper portion is formed on the upper surface of the frame 61 and a plurality of outlet holes (63a) is formed so that the air is discharged It includes a plate 63 and a cooling fan 64 coupled to the lower portion of the lower plate 62 to cool the inside of the frame 61, and the upper, lower, left, and right portions of the upper portion of the frame 61 A part of the side surface of the frame 61 may be opened.

The receiving box 60 minimizes the influence of heat generated in the converter 1 when the wind blown through the cooling fan 64 passes through the arc-blocking converter 1.

The receiving box 60 includes an arc-blocking signal converter 1, an earth leakage breaker 2, an arc position detecting unit 600 and an arc extinguishing member 700.

The arc-blocking signal converter 1 is connected to the input connection terminal 10a for each phase, and the arc detection unit 100 detects an arc signal generated for each branch, and analyzes the detected arc signal to determine and determine whether there is a harmful arc According to the result, the microprocessor 200 for driving the relay, and the relay 300 that is driven by the microprocessor 200 to send a blocking signal to a blocking device such as an earth leakage breaker, which is installed, is for supplying operating power by itself. It comprises a power supply unit 400 and the communication converter 500.

The arc-blocking signal converter 1 analyzes the arc signal detected by the arc detection unit 100 to drive the relay 300 to block the current by the earth leakage breaker 2, and the arc position detection unit 600 and the arc By using the arc extinguishing member 700, the earth leakage circuit breaker 2, the arc-blocking signal converter 1, and the arc discharge signal emitted externally on the lines of each phase are sucked into the arc guide needle 830 to be extinguished.

The arc detection unit 100 includes a CT (110a to 110d), a band pass filter (120a to 120d), an OP-AMP (130a to 130d), and an A/D converter (140a to 140d) on a quarterly basis.

CT (110a ~ 110d) is a sensor that can detect the arc and current, as shown in Figure 7 below, may be configured to include the inside of the arc-blocking signal converter 1 of the present invention, the following diagram As shown in Fig. 8, the arc-blocking signal converter 1 may be separated and configured separately.

The band pass filter (BPF) 120a to 120d receives current from the CTs 110a to 110d to pass only high-frequency characteristics that appear when an arc occurs.

The OP-AMPs 130a to 130d receive high-frequency arc inputs that have passed through the band pass filters 120a to 120d, and output only harmful arcs compared to a reference level.

The A/D converters 140a to 140d convert the arc signal waveforms output from the OP-AMPs 130a to 130d into a digital form that can be processed by the microprocessor 200 at a later stage.

It is preferable that the power source 400 uses a rechargeable battery power source that allows power to be supplied even when the power is cut off by a circuit breaker.

The microprocessor 200 determines whether it is a hazardous arc or a normal arc by calculating the current width change state and the number of current pulses detected at regular intervals, and, in the case of the harmful arc, relays a blocking signal to a blocking device such as an earth leakage breaker. (300).

In other words, the microprocessor 200 detects a phenomenon in which the slope of the current signal changes rapidly from digital data converted from the A/D converters 140a to 140d, determines whether a discontinuity of the current signal exists, and It detects the current zero point where the discontinuity of the current signal is detected, calculates the number of occurrences of the current signal pulse based on the current zero point, and determines if the change in the pulse widths of the current signal is greater than a predetermined reference value, as a harmful arc signal.

In addition, the microprocessor 200 determines the normal arc signal in the case of a one-time arc signal, and determines the final harmful arc signal by repeatedly generating an arc signal over a predetermined number of times.

The microprocessor 200 analyzes the arc signal waveforms received from the A/D converters 140a to 140d and determines that it is a harmful arc signal, and transmits a blocking signal to the relay 300 to a blocking device such as an earth leakage breaker. .

The relay 300 opens the mechanical contact according to the blocking signal of the microprocessor 200 to cut off the current.

3 is a view showing a position detection state of the arc signal of the arc position detection unit according to an embodiment of the present invention.

Inside the receiving box 60, the ground fault circuit breaker 2 and the arc-blocking signal converter 1 are installed at parallel positions spaced apart from each other by sensing light generated from the arc radiating to the outside, thereby detecting electrical signals. Arc position detection unit 600 to generate a two-dimensional image signal is further included.

The arc position detection unit 600 may be installed one or more spaced apart a predetermined distance from the inside of the receiving box 60, and includes a UV lens unit 610, a UV selection filter unit 620, and an image sensor unit 630 do.

When the arc occurs at a location where a short circuit can occur, the ultraviolet ray lens unit 610 receives light generated from the arc.

The ultraviolet ray selection filter unit 620 selectively transmits only light in the ultraviolet region of the arc signal passing through the lens unit 610 for ultraviolet rays and blocks light in other wavelength bands.

The image sensor unit 630 forms an arc signal passing through the UV selection filter unit 620 and converts it into an electrical signal, and generates a two-dimensional image signal and transmits it to the microprocessor 200.

The image sensor unit 630 may display the elevation angle and the azimuth angle of the incident light with respect to the optical axis as X coordinates and Y coordinates in the two-dimensional image signal, and detect the occurrence position of the arc in the space in the housing 60. .

The microprocessor 200 may analyze the amount of light according to the position of the 2D image signal to detect whether an arc is generated (a short circuit occurs) and an arc occurrence position.

In the 2D image signal generated by the image sensor unit 630, there is a light emission point distinguished from the surrounding area. The microprocessor 200 calculates the position where the arc occurs from the 2D position information of the light emission point, and generates and accommodates the X coordinate and the Y coordinate from the 2D image signal to determine the location of the arc discharge in the space inside the 60. Can be calculated.

Figure 4 is a view showing the operation of the arc extinguishing member in a container having an arc-blocking converter according to an embodiment of the present invention, Figure 5 is a moving block portion having an arc extinguishing member according to an embodiment of the present invention It is a diagram showing a detailed configuration.

The arc extinguishing member 700 induces an arc current by moving the arc induction needle 830 in the up and down direction to the position where the arc discharge occurs on the inner space of the container 60.

The arc extinguishing member 700 forms a first cradle 701 on one upper side of the frame 61 and a second cradle 702 on one lower side of the frame 61, and the first cradle 701 and the first 2 The transfer screw 710 of a predetermined length is formed in the vertical direction between the cradle 702, and the upper end of the transfer screw 710 penetrates through the first cradle 701 and the frame 61 to be the first. It is coupled to the drive motor 720.

The transfer screw 710 couples the moving block portion 730 across the central portion of the cube shape.

The moving block portion 730 forms a through hole so that the transfer screw 710 penetrates the central portion in a hexahedral shape in the longitudinal direction, and the first thread formed on the outer circumferential surface of the transfer screw 710 on the inner circumferential surface of the through hole A corresponding second thread is formed.

The transfer screw 710 is inserted into the through hole of the moving block portion 730 so that the first screw thread and the second screw thread are engaged. Accordingly, when the transfer screw 710 is rotated by the driving force of the first driving motor 720, the moving block unit 730 reciprocates in the vertical direction of the transfer screw 710.

The moving block part 730 is coupled with a horizontal moving part 800 having an arc guide needle 830 that induces an arc current in the front. The shape of the arc guide needle 830 is formed in a bullet shape, and is narrower and narrower from one side to the other.

The arc induction needle 830 functions to induce arc current by inhaling an arc current when the arc discharge occurs among the circuit breaker 2, the arc-blocking signal converter 1, and each phase of the line, and to extinguish it by flowing to the ground through the ground wire. .

When the microprocessor 200 receives the location information of the arc occurrence from the image sensor unit 630, the microprocessor 200 controls the first drive motor 720 based on the received location information of the arc to rotate the transfer screw 710 and Accordingly, it is controlled to move the moving block unit 730 to the position where the arc is generated. Here, the position information of the occurrence of the arc is represented by an X-coordinate and a Y-coordinate for each position of the circuit breaker 2, the arc-blocking signal converter 1, which can generate an arc in the receiving box 60, by location.

As described above, the microprocessor 200 moves the arc induction needle 830 to the position where the arc occurs when an arc discharge occurs on the circuit of the circuit breaker 2, the arc-blocking signal converter 1, and each phase. The arc current induced by suction by the arc induction needle 830 passes through a high resistance impedance (not shown) and flows to the ground wire.

The microprocessor 200 analyzes the light amount information according to the position of the 2D image signal, and determines that the light amount information is equal to or less than a preset reference value, and moves the arc guide needle 830 in the horizontal direction by the horizontal moving unit 800. Adjust to move finely.

The horizontal moving part 800 includes a first housing 810 coupled to a front surface that is a horizontal direction of the moving block part 730, a second housing 830 communicating with the interior of the first housing 810, and the The arc guide needle 830 is horizontally coupled to the front surface of the second housing 830.

A pinion gear 811 is coupled to a rotation axis of the second drive motor 812 in the accommodation space of the first housing 810, and the gear of the rack gear 813 is engaged with the pinion gear 811.

The second housing 830 has a smaller diameter than the first housing 810, and the inner space communicates with the first housing 810. The rack gear 813 is formed to have a constant length in the horizontal direction, and is formed from the inner space of the first housing 810 to the inner space of the second housing 830.

A rack gear 813 is disposed through the first housing 810 in an accommodation space of the second housing 830, and one end of the spring member 821 is coupled to one end of the rack gear 813. .

One end of the spring member 821 is coupled to one end of the rack gear 813, and one side of the arc guide needle 830 is coupled to the other end.

The microprocessor 200 analyzes the light amount information according to the position of the 2D image signal and determines that the light amount information is equal to or less than a preset reference value, drives the second driving motor 812 to rotate the pinion gear 811 , The rack gear 813 meshed with the pinion gear 811 moves to press the spring member 821, thereby finely moving the arc guide needle 830 to a position where arc discharge is generated. The fine movement of the arc induction needle 830 is to absorb and extinguish the weak arc discharge current at a position where the arc discharge is repeatedly generated.

Although not shown in FIGS. 7 to 14, the microprocessor 200 of the present invention includes an arc position detection unit having an ultraviolet lens unit 610, an ultraviolet selection filter unit 620, and an image sensor unit 630 ( 600), the first drive motor 720 and the second drive motor 812 of the arc extinguishing member 700 are electrically connected to supply power, transmit a cutoff signal, or transmit and receive a control signal.

Figure 6 is an external view showing the arc-blocking signal converter 1 according to the present invention, the connection terminal 10 for each phase to be installed in the middle of the power wiring outside the case, the communication port 20, the power switch (30), consisting of a test button (40) to check whether it is operating normally, and an LED indicator (50) to display the current status of each branch and cause the power off by changing the display color and flashing state. .

7 and 8 is a block diagram showing an arc-blocking signal converter 1 according to the present invention, Figure 7 is a current transformer (Current Transform; CT) integral, Figure 8 is configured as a separate CT.

The arc-blocking signal converter 1 of the present invention having such a configuration, as shown in FIGS. 9 and 10, is installed in the conventional circuit breaker 2, such as an independent earth leakage circuit breaker or an arc earth leakage circuit breaker upstream side or It can be used by connecting it on the downstream power line.

In addition, the arc-blocking signal converter 1 of the present invention is shown in (a) to (c) of FIG. 9 and (a) to (c) of FIG. 5, single-phase, three-phase, three-wire, three-phase It can be installed in a 4-wire system.

At this time, the arc-blocking signal converter 1 of the present invention is wired in the form shown in FIGS. 10 to 13.

FIG. 11 shows the connection form of the CT integrated arc-blocking signal converter 1 of FIG. 7 when installed on the upstream side of the blocking device 2 in a three-phase four-wire type, and FIG. 12 shows the downstream side of the blocking device 2 Shows the type of wiring when installed.

11 and 12, four power lines of "R, S, T, N" are connected to the input/output connection terminals 10a, 10b of the arc-blocking signal converter 1 of the present invention, and power wiring is performed. It will be installed in the middle. At this time, the relay 300 may be connected by selecting two phases randomly among "R, S, T, and N" or by selecting one phase and connecting the other ground. However, one of the two phases connected to the relay 300 should be connected to the downstream of the existing installation blocker 2, and the other one must be connected to the upstream.

In FIG. 11, two phases of “R” and “N” are selected and connected to the relay 300, but the “R” phase is connected to the downstream side of the existing installation blocking device 2 through the jump connection terminal 10c. , "N" phase is connected to the upstream of the existing installation blocking device (2) through the output connection terminal (10b).

In FIG. 12, two phases of “R” and “N” are selected and connected to the relay 300, but the “R” phase is connected to the upstream of the existing installation blocking device 2 through the jump connection terminal 10c. , "N" phase is connected to the downstream of the existing installation block (2) through the output connection terminal (10b).

In the connected installation state, the arc detection unit 100 detects the current flowing through each phase line through the CTs 110a to 110d, and passes only the high-frequency characteristics that appear when an arc occurs using the band pass filters 120a to 120d. -Only harmful arcs are output using AMPs 130a to 130d and converted to digital data using A/D converters 140a to 140d.

The microprocessor 200 determines whether the arc signal detected by the arc detection unit 100 is a harmful arc.

When it is determined that the microprocessor 200 is a harmful arc, the relay 300 is driven to artificially generate a blocking signal such as a leakage signal, so that a blocking device 2 such as an earth leakage breaker operates to cut off power.

As described above, the arc-blocking signal converter 1 of the present invention is inserted and installed in the middle of the power wiring to detect an arc when an arc occurs and analyze and classify the harmful arc that causes the fire to detect the harmful arc and cause an electric fire. The signal of the part identified as a harmful arc is converted into a blocking signal to operate the existing installation blocking device 2 to cut off the power. That is, the arc-blocking signal converter 1 of the present invention is not an independent circuit breaker but generates a blocking signal when a harmful arc occurs, and is blocked using an existing circuit breaker such as an earth leakage circuit breaker.

On the other hand, since the arc-blocking signal converter 1 of the present invention operates as the power of the power supply unit 400 using a battery power that can be charged therein, the power supply state even when the power is cut off by the blocking device 2 Is maintained and operated.

Therefore, the arc-blocking signal converter 1 of the present invention maintains the power even if the power is cut off due to an arc fault, so that it is possible to analyze in real time information about the state of the line, such as the state of the current branch and the cause of the cutoff.

The microprocessor 200 displays the analysis result on the LED indicator 50 differently in the lighting color and flashing period, so that the user can visually know the cause of the blocking or the line condition.

In this embodiment, the LED indicator 50 is divided into green in normal operation, blue in case of an arc, and red in case of a short circuit to visually check whether the system is operating normally or not. The color can be different depending on the purpose.

The microprocessor 200 also generates a normal signal at regular intervals when power is normally supplied, and generates a trip signal indicating that an arc has occurred when the arc is detected, thereby transmitting the generated signal to the outside through the communication converter 500. It is possible to perform a quarterly monitoring function that monitors in real time the electricity status of branches within the distribution panel by sending.

Therefore, it is very useful when an accurate monitoring of a real-time blocking required when an immediate response to a risk is urgently required.

In particular, in the case of air circulation, such as a fan or a fan, there are many three-phase facilities, so in the case of houses such as livestock raising thousands and tens of thousands of livestock and cattle farms such as pigs, monitoring of them immediately occurs when a dangerous situation occurs due to sudden electricity interruption. It can be done quickly.

Meanwhile, the test button 40 may generate a forced driving signal to drive the relay 300 in the microprocessor 200 to check whether the product operates normally even if there is no arc signal.

FIG. 13 shows the connection form of the CT-separated arc-blocking signal converter 1 of FIG. 7 when installed on the upstream side of the blocking device 2 in a three-phase four-wire system, and FIG. 14 shows the downstream side of the blocking device 2 Shows the type of wiring when installed.

13 and 14, four power lines of “R, S, T, and N” are connected to the input/output connection terminals 10a and 10b of the arc-blocking signal converter 1 of the present invention to power wiring It will be installed in the middle. Particularly, CTs 110a to 110d for each phase are connected to the input connection terminal 10a. To the relay 300, two phases of “R, S, T, and N” may be randomly selected and connected, or one phase may be selected and the rest may be connected to ground. However, one of the two phases connected to the relay 300 should be connected to the downstream of the existing installation blocker 2, and the other one must be connected to the upstream.

13 is connected to the relay 300 by selecting two phases of "R" and "N", but the "R" phase is connected to the downstream side of the existing installation blocking device 2 through the jump connection terminal 10c, The "N" phase is connected to the upstream side of the existing installation blocking device 2 through the output connection terminal 10b.

14 is connected to the relay 300 by selecting two phases of "R" and "N", but the "R" phase is connected to the upstream of the existing installation blocking device 2 through the jump connection terminal 10c, The "N" phase is connected to the downstream side of the existing installation blocking device 2 through the output connection terminal 10b.

In such a connected state, the CTs 110a to 110d detect current flowing in each phase line and apply it to the arc-blocking signal converter 1 of the present invention. The arc detection unit 100 of the arc-blocking signal converter 1 passes only the high-frequency characteristics that appear when an arc is generated using the band pass filters 120a to 120d, and then uses the OP-AMPs 130a to 130d. It outputs only the arc and converts it into digital data using A/D converters 140a to 140d. Subsequent operations are performed in the same manner as in FIGS. 11 and 12 to cut off the power using the existing installation blocking device 2 when a harmful arc occurs.

Therefore, if the arc-breaking signal converter 1 of the present invention is used, it is necessary to make all separate independent circuit breaker products that require specification certification for each capacity, such as rated current and voltage, such as circuit breakers of independent standards. There will be no.

As described above, the present invention has been described and illustrated in connection with a preferred embodiment for illustrating the technical idea of the present invention, but the present invention is not limited to the configuration and operation as illustrated and described, and deviates from the scope of the technical idea. It will be understood by those skilled in the art that many changes and modifications to the present invention are possible without. Accordingly, all such suitable changes and modifications and equivalents should also be considered within the scope of the present invention.

1: Arc-blocking signal converter 2: Blocking device
10: Connection terminal 20: Communication port
30: Power switch 50: LED indicator
60: box 100: arc detection unit
200: microprocessor 300: relay
400: power supply 500: communication converter
600: arc position detection unit 700: arc extinguishing member
800: horizontal moving part

Claims (12)

In the arc-blocking signal converter using the circuit breaker installed on the power line to perform the blocking by the arc,
Includes a frame forming a rectangular parallelepiped in the form of four square columns erected vertically to accommodate the arc-breaking converter and the earth leakage breaker therein,
The arc-blocking signal converter,
It is composed of a single case product, is equipped with a connection terminal for each phase, installed and installed in the middle of the power wiring, and CT is connected to each phase of the connection terminal to detect harmful arcs generated in each phase and detect the detected arc signal. Converted to a blocking signal and transmitted to the earth leakage circuit breaker,
The arc-blocking signal converter,
Band-pass filter for passing only the high-frequency characteristics that appear when the arc is generated by applying the current detected by the CT, OP-AMP that receives the signal of the high-frequency characteristics that have passed through the band-pass filter and outputs only harmful arcs compared to the reference level. And an A/D converter for converting the harmful arc waveform output from the OP-AMP into a digital form to detect an arc signal generated for each phase;
A microprocessor that analyzes the arc signal detected by the arc detection unit to determine whether there is a harmful arc, and drives a relay when determining as a harmful arc; And
It includes a relay that is driven by the microprocessor and sends a cut-off signal,
Inside the storage box, the ground fault circuit breaker and the arc-blocking signal converter are installed at parallel distances from each other to detect light generated from the arc radiating to the outside and converted into an electric signal to generate a two-dimensional image signal. The arc position detection unit further includes, and the microprocessor generates X coordinates and Y coordinates from the two-dimensional image signal to calculate the occurrence position of the arc discharge in the inner space of the container, and guides the arc to the calculated occurrence position. An arc-blocking signal converter characterized in that the needle is moved to induce an arc current to flow through the ground wire to be extinguished. According to claim 1,
The arc position detection unit,
When the arc occurs at the location where a short circuit occurs, the ultraviolet lens part, through which the light generated by the arc is incident, and selectively transmits only light in the ultraviolet region of the arc signal passing through the ultraviolet lens part and blocks light in a different wavelength band. The ultraviolet-selective filter unit and the arc signal passing through the ultraviolet-selective filter unit are converted into an electrical signal, and a two-dimensional image signal is generated and transmitted to the microprocessor, and the microprocessor according to the position of the two-dimensional image signal. An arc-blocking signal converter characterized by detecting X- and Y-coordinates in the two-dimensional image signal to determine whether an arc is generated and where the arc is generated by analyzing light quantity information. According to claim 1,
On the inner space of the storage box further includes an arc extinguishing member that induces the arc current by suctioning the arc guide needle up and down to the calculated occurrence position,
The arc extinguishing member forms a first cradle on one side of the upper end of the frame and a second cradle on the bottom side of the frame, and transfer screws in a column shape of a constant length in the vertical direction between the first cradle and the second cradle. Is formed, the upper end of the transfer screw penetrates the first cradle and the frame and is coupled to the first drive motor, forms a through hole so that the transfer screw penetrates the central portion in a hexahedral shape in the longitudinal direction, the Arc-blocking signal converter characterized in that it comprises a moving block portion formed on the inner circumferential surface of the through hole and the second thread corresponding to the first thread formed on the outer circumferential surface of the transfer screw. According to claim 3,
When the microprocessor receives the arc occurrence position information, the microprocessor controls the first drive motor based on the received arc occurrence position information to rotate the transfer screw, and thus moves the block to the position where the arc discharge occurs. Arc-blocking signal converter characterized in that the control to move the negative in the vertical direction. According to claim 1,
A rechargeable battery that allows operating power to be supplied even when the power is cut off by the circuit breaker shut-off operation, and a power switch for operating the supply of operating power from the battery "ON (ON)/OFF (OFF)" Power supply unit;
A test button for generating a forced driving signal to drive the relay in the microprocessor to check whether the operation is normal; And
Arc-blocking signal converter comprising a communication converter that communicates with the outside to monitor and monitor the normal power-on state and arc generation from the outside. The method of claim 5,
When the power is normally applied, the microprocessor generates a normal signal at regular intervals, generates a trip signal indicating that an arc has occurred when an arc is detected, and transmits the generated signal to the outside through the communication converter, thereby generating a normal signal. Arc-blocking signal converter characterized in that it enables a quarterly monitoring function to monitor the electric condition in real time. According to claim 1,
The relay is arbitrarily selected by connecting two phase connection terminals among connection terminals for each phase, and one of the two phase connection terminals connected to the relay is connected to the downstream of the earth leakage breaker, and the other is connected to the upstream. Characterized by an arc-blocking signal converter. According to claim 1,
The arc-blocking signal converter is an arc-blocking signal converter characterized in that when the harmful arc signal occurs, the leakage circuit is operated by converting it into a leakage signal. According to claim 1,
The arc-blocking signal converter further comprises an LED indicator indicating a cause of power failure and the current state of each branch by allowing a display color and a blinking state to be varied. According to claim 1,
The CT is an arc-blocking signal converter, characterized in that it is configured as an integral type or separate from the outside of the arc-blocking signal converter. According to claim 3,
The moving block portion is an arc-blocking signal converter, characterized in that the horizontal moving portion having an arc induction needle to induce an arc current in front. According to claim 1,
The shape of the arc guide needle is formed in a bullet shape, and the width is narrowed from one side to the other, so the arc-blocking signal converter is characterized in that it has a sharp shape.

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