KR102338558B1 - Multi-functional Non-electric shock Protective System and Protective Method Thereof - Google Patents

Abstract

The present invention relates to a non-electric shock protective system and a protection method thereof, which comprises multi-functional non-electric shock protection units shielding, absorbing and reducing a leakage current to prevent an accident of electric shock and blocking an external surge to prevent an arc, wherein the multi-functional non-electric shock protection unit includes: a multi-functional ground-fault shielding unit performing shielding of a ground-fault current and grounding distribution; a noise filter unit shielding, absorbing and reducing a leakage current in a power terminal (L) and a neutral line terminal (N); a power source unit supplying system power; a main control unit controlling each unit of the system such that an amount of a leakage current is kept within 5mmA under any circumferences in order to output normal power of the system; an abnormality detection unit capturing a leakage current and a noise current as used power when abnormal output of the main control unit is detected; a pulse width modulation control unit receiving power from the abnormality detection unit to modulate an amplitude and frequency and perform compensation; and polar indication units detecting and indicating a polar error of input power. Accordingly, a leakage current is shielded, absorbed, and reduced to prevent electric shock and an external surge is blocked to prevent an arc.

Description

Multi-functional Non-electric shock Protective System and Protective Method Thereof

The present invention relates to an electric leakage prevention device that prevents electric leakage due to leakage current. In particular, it is an alignment method that utilizes a wavelength band that occurs based on a potential phenomenon, such as an electric device exposed to various external environments. It relates to a multifunctional no-electric shock protection system and protection method that prevents electric shock due to shielding, absorption and reduction of leakage current by compensating for the frequency sine wave band of the applied power and blocking external surge.

As a representative of the prior art, Korea Patent No. 10-1915485 (2018.11.08) discloses the title of the invention "grounding-type radio-protection device", and this prior art is a serial method in which the input terminal unit 100 is a phase voltage terminal and a neutral point. A first input terminal 110 electrically connected to any one of the terminals, a second input terminal 120 connected to any one that is not electrically connected, and a ground terminal G connected to a ground terminal, The terminal polarity fixing unit 200 is composed of a switching unit 210, a switching control unit 220, an SMPS unit 230 and a power connection unit 240, and the output terminal unit 330 is a first output terminal 310, a second 2 including an output terminal 320 and a neutral output terminal 330, the terminal polarity fixing part 200 is disposed between the input terminal part 100 and the output terminal part 300, the first input terminal 110 and the second The input terminal 120, the first output terminal 210, and the second output terminal 230 are electrically connected to each other, and any one of the first output terminal 210 and the second output terminal 230 is electrically connected to each other. To be electrically connected to the voltage terminal, the neutral output terminal 330 is electrically connected to the neutral terminal, and the connection terminal 400 is electrically insulated from each other while being exposed on the upper surface of the body part and the body part made of an insulator. A first connection terminal 410, a second connection terminal 420, and a neutral point to electrically connect the first output terminal 310, the second output terminal 320, and the neutral point output terminal 330 to the load to be disposed. It has connection terminals 430, and when the short circuit prevention conductor part 500 is electrically connected to a phase voltage terminal and any one of the first output terminal 310 and the second output terminal 320 is electrically connected to the phase voltage terminal and Although not electrically connected to the electrically connected connection terminal, the neutral point connection terminal 430 is electrically connected to the neutral point connection terminal 430 electrically connected to the neutral point terminal and disposed around the phase voltage terminal and the electrically connected connection terminal to the body from the body vertical penetrating the wealth downwards Conductor section, the bottom conductor section bent horizontally at the end of the vertical conductor section and extended to the outside of the bottom across the bottom of the body section It is composed of a plate-shaped side conductor part that extends to a certain height.

In the prior art as described above, in particular, in Korean Patent Registration No. 10-1197414, since the input terminals are connected to the output terminals through the switching unit, the voltage and current capacity of the power line is limited by the capacity of the switching unit, and the energy depends on the resistance value of the switching unit. In order to solve the problem that loss and heat may be generated, the input terminals and output terminals are directly connected, so that the voltage and current capacity of the power line is not limited by the capacity of the switching unit, and the voltage and current capacity of the power input load is Since the same applies to the output terminal part, when the exposed terminals of the electric device are submerged, it reduces the leakage current flowing between the terminals to prevent electric shock, ensures the normal operation of the electric device, and prevents electric and electromagnetic waves generated from the outside. It is intended to reduce the exposure of the internal circuit of the electric device to electric and electromagnetic waves generated from the outside.

However, in this prior art, the terminal polarity fixing part between the input terminal part and the output terminal part excites the relay coil of the switching part so as to safely apply the phase voltage to the load and has a power connection part to prevent short circuit, and the connection terminal part is composed of an insulator Consists of connecting terminals connected to a load spaced apart from each other in a body part to be insulated from each other, and the electric leakage prevention conductor part supports the connection terminals and faces the body part usually made of a steel plate or copper plate material; vertical, horizontal and side conductor parts is composed of

In this configuration, the switching part that shields the electric force line and blocks leakage has a risk of malfunction against instantaneous high voltage and large current, and the earth leakage prevention conductor part that maintains only simple shielding of the electric field is the separation distance between the phase voltage terminal and the ground terminal and the neutral point terminal The generation of an electric field cannot be avoided depending on the size of the metal conductor of In other words, the simple shielding of the electric force line leaked by contact air and moisture, as well as being oxidized and damaged, reaches a certain point and becomes the main cause of the leakage, which greatly increases the leakage and causes an electric shock to the human body. .

In addition, since it is connected in series with an electric device, the amount of leakage may increase proportionally according to the load capacity, and there is a disadvantage that it should be applied only to a small size.

In consideration of this, the simple shielding effect of the electric field of the prior art cannot absorb and shield the leakage current above a certain level, so that the leakage current exists on the internal line of the system. It prevents malfunction of devices and detects an abnormal voltage applied on the circuit, detects and blocks electric leakage when power is applied, enables stable power supply to the load even in flooded and humid areas, and prevents accidental It can be seen that it is very desirable to prevent electric shock due to short circuit.

Korea Patent No. 10-1801772 Non-grounding type earth leakage prevention device Korea Registered Patent No. 10-1915485 Ground Type Earth Leakage Prevention Device Korean Patent Registration No. 10-1197414 Earth leakage prevention device when submerged

The main object of the present invention is to turn on the power to maintain the normal power application and ground state, and the electric device changes the frequency to a sinusoidal wave band without interference from various external environments and changes the amplitude to a constant external interference-free amplitude to electronically arrange the electric field lines so that the potential difference between the equipotentials In order to prevent abnormal waveforms from being formed due to harmonics and noise, the leakage current is collected and shielded, absorbed and reduced, and the ground fault current is shielded, absorbed and reduced to prevent electric shock and external surges. An object of the present invention is to provide a multifunctional non-electric shock protection system and protection method that detects an abnormal state to be applied and compensates for frequency.

Another object of the present invention is to use modulation compensation control that compensates in the form of a frequency sine wave to shield leakage current of electric devices without external interference and significantly reduce system noise and electromagnetic waves to prevent malfunctions and component damage, and to prevent overvoltage The object of the present invention is to provide a multifunctional no-electric shock protection system and protection method that detects an abnormal state to be applied and compensates the frequency to trip the earth leakage breaker of the distribution board by recognizing it.

Another object of the present invention is to avoid malfunctioning of absorption (disappearance) and interruption of electric field, detect and block leakage current on the circuit without a structure to shield leakage current over a certain level, and provide stable power supply for load even when submerged. An object of the present invention is to provide a multifunctional no-electric shock protection system and protection method that detects an abnormal state to be applied and compensates for frequency to enable authorization.

According to the present invention, a multi-function non-electric shock protection system for no electric shock includes a multi-function earth fault shielding unit for detecting an abnormal state of an applied power supply and performing earth fault current shielding and ground distribution; A filter is provided at the power terminal (L) and the neutral terminal (N) to shield, absorb (disappear) and reduce leakage current, the power supply supplying system power, and controlling each part of the system to output normal system power. In any situation, the main control unit controls to keep the current leakage within 5mA, and when an abnormal output of the main control unit is detected, the abnormality detection unit collects the leakage current and noise current and collects it as the power used, and by receiving power from the abnormality detection unit It consists of a pulse width modulation control unit that compensates by modulating amplitude and frequency and a polarity display unit that detects and displays the polarity error of the input power. The electric field lines are arranged electronically so that there is no potential difference between the equipotentials so that the “zero potential” is made to prevent abnormal waveforms from being formed due to harmonics and noise. It is composed of multi-function non-electric shock protection units to prevent surge and overvoltage application.

The multi-function ground fault shield has a power terminal (L) connected to a coil (CL) terminal 2' of a first relay composed of a first switch and a second switch, and a first diode, a first light emitting diode and a first resistor to the terminal 1' They are connected in series in this order, and a neutral wire terminal N is formed between the first resistor and the coil CL, and is common to the terminal 4' of the first switch and the terminal 8' of the second switch via the second resistor. It is connected to the load terminal E2, and the terminal 3' of the first switch and the terminal 6' of the second switch are simultaneously connected to both rectifying terminals of the first bridge circuit, and are connected to both output terminals of the first bridge circuit in parallel. Aligned first and second neon lamps are installed, the terminal 3' of the first switch is connected to the load ground terminal (E1), and the terminal 6' of the second switch is connected to the third neon lamp and the third resistor in series and then connected to the ground terminal (FG).

In the multifunctional ground fault shielding unit, when normal power is applied, the first light emitting diode is turned on, the relay coil (CL) is excited, and the electric device (load) to be used is connected to the load terminal (E2) and the load ground terminal (E1) (not shown). ) is in a state where power is applied.

The multifunctional ground fault shielding unit returns to the original position where terminals 6' and 3' are connected to terminals 7' and 4' in the first and second switches when a leakage current due to a ground fault occurs at the leakage grounding terminal (EPG), thereby reducing the leakage current. The first and second neon lamps connected in parallel to the output terminal are turned on by connecting to the rectifying terminal of the first bridge circuit, and the third neon lamp is turned on at the terminal 6' at the same time and applied to the third resistor to drop the voltage and turn off the multi-function at the same time. Let the load control unit recognize the 0 ~ 10V voltage.

The noise filter unit detects the overvoltage due to the ground fault at the leakage ground terminal (G1) between the second capacitor and the third capacitor connected to the output terminal 1 of the first coil by the main control unit, and applies it to the leakage ground terminal (EPG) of the ground fault shield. Since it passes through the ninth resistor, the first and second switches of the first relay are operated to connect the leakage current to the rectifying terminal of the first bridge circuit for rectification, and the first and second rectified power sources connected in parallel to the output terminal thereof The neon lamp is turned on and the third neon lamp is turned on at the same time as the terminal 6', and the voltage is lowered to 10V or less by applying it to the third resistor.

The abnormality detection unit includes first, second and third collection units connected between the power line terminal (L), the neutral line (N) and the ground line (FG), and first, second and third frequencies connected in parallel to each of them. Compensation units are provided, and the first collecting unit has an input terminal connected to the fourth neon lamp via a third power terminal (L3) and a tenth resistor, and an output terminal thereof to a pulse width modulation controller via a neutral terminal (N3). Simultaneously with the connection, it is connected to the ground terminal (FG), the input terminal of the second collection unit is connected to the power terminal of the fourth neon lamp via the power terminal (L3) and the tenth resistor, and the output terminal is connected to the pulse width modulator. It is connected to the ground terminal (FG), the third collection unit has an input terminal connected to the power terminal (L3) and a neutral terminal (N4), and an output terminal is connected to the pulse width modulation control unit and is connected in common to the ground terminal (FG), Since the input terminal is separated from the ground terminal (FG) of the fourth neon lamp by 4 diodes, the pulse width modulation control unit recognizes the leakage voltage current, compensates the voltage frequency by pulse width modulation, and modulates the voltage to a constant amplitude power supply voltage. The receiving main control unit sets the potential difference with the normal power source to “zero potential”, collects leakage current generated by a ground fault from nearby electric devices, extinguishes it in the fourth neon lamp, and shields it.

The first, second, and third frequency compensators are a conductor installed on the substrate, a high-conductivity mesh positioned to cover the conductor, and the bottom contacting the mesh and the conductor and contacting the center of the mesh It is composed of cylindrical permanent magnets of strong magnetic material positioned with Because it is set as "incongruent", the main control unit always induces the output of power with normal frequency.

In the polarity display part, the leakage power from the ground fault detection terminal (G1) is connected to the leakage ground terminal (EPG) via the point (A), and the power supply from the power supply terminal (L) is via the output terminal 3 of the coil of the noise filter unit. to the neutral wire terminal (N4) and the ground terminal (FG) of the third collecting unit, the power terminal (L) is connected to the point (C), the point (D) is connected to the second collecting unit and at the same time the fourth neon It is connected to the ground side of the lamp, and between the points (B) and (C), a fifth diode, a fourth light emitting diode, and a seventh resistor are connected in series, and the leakage current from the ground fault detection terminal (G1) is It is connected to the point (B) so that the fourth light emitting diode is turned on, and the normal power sensor is connected to the point (B) to apply normal power to the third bridge circuit, and the sixth light emitting diode displays the application of normal power, The overvoltage connected from the power terminal L to the point C is sensed at the abnormal voltage detection terminal G2, and when the overvoltage or a reverse voltage is applied, the seventh light emitting diode is turned on to indicate the application of the abnormal voltage.

The multi-function no-electric shock protection method is to check the connection of power to the power terminal (L), neutral wire terminal (N) and ground terminal (FG) when the power is turned on, determine whether the normal polarity is applied, and when the normal power supply is confirmed, the system Control works, and if the connection is not in the normal polarity, check the grounding wire connection, and when power is applied to the neutral wire terminal (N) or the grounding terminal (FG), it is determined whether the other terminal is grounded, and the ground wire is not connected. When the 5th light emitting diode is turned on, the power polarity is changed and connected to control the operation of the sub-electric shock protection unit, and the non-electric shock protection unit detects a ground fault when the power is turned on and detects the leakage current of the electronic application device, and the first and second and the third collection part check the leakage current, determine whether the overvoltage is applied, and when the overvoltage application is detected, determine whether the voltage is 10V, 5mA or less, and if the voltage is 10V or 5mA or more, change the power polarity if the ground line is not connected to control the operation of the non-electric shock protection unit, and if the voltage is 10V and current 5mA or less, the main control unit switches to the "zero potential" operation monitoring function, then collects the leakage current in turn, switches to the overvoltage detection mode, collects noise and pulses It is applied to the width control unit, it is judged whether the operation is normal, and if it is not a normal operation, the circuit breaker of the distribution panel is operated as an abnormal operation. If the operation is normal, the operating state is maintained.

The present invention maintains a normal power application and grounding state by supplying power, collects leakage current caused by exposure of applied electric devices to various external environments, shields ground fault leakage current, prevents electric shock due to absorption and reduction, and prevents external surges. It cuts off and realizes no electric shock by recognizing the occurrence of overvoltage and tripping the earth leakage breaker of the distribution board.

A brief description of the drawings for explaining the present invention is as follows.
1 is a block diagram of a grounding-type radio protection device of the prior art,
2 is a block diagram of a multi-function non-electric shock protection system having a multi-function earth fault shielding unit and a multi-function non-electric shock protection unit according to the present invention;
3 is a detailed circuit diagram of a multi-function earth fault shield according to the present invention;
4A and 4B are detailed circuit diagrams of the noise filter unit and the polarity display unit, respectively, and FIG. 4C is a front view and a perspective view showing the configuration of the floating unit,
Figure 5 is a flow chart showing the operation of the multi-function earth fault shielding unit according to the present invention and the procedure of the system control operation of the multi-function non-electric shock protection unit.

The multifunctional electric shock-free protection system and protection method of the present invention is a paper "A Method of Reducing Disturbances in Radio by a system of frequency modulation" published by Edwin Howard Armstrong in 1936. Signaling by a System of Frequency Modulation)" was applied by applying the frequency modulation theory.

If the frequency modulation theory is applied here, a "modulation compensation control device with a frequency sine wave band" is implemented using a wavelength band based on potential phenomena such as between phases (single-phase, three-phase), as shown in the explanatory diagram (1) of the frequency modulation compensation principle Similarly, by compensating the frequency with a sine wave band, the frequency is changed to a constant amplitude without external interference, and the electric field lines are arranged electronically so that there is no potential difference. Therefore, it is possible to protect against surge caused by overvoltage when power is supplied from the input part, and by applying the principle of completely shielding, extinguishing, and incinerating the ground fault leakage current and the leakage current of the used electric device, It is possible to prevent an electric shock accident and to prevent an electric fire accident when the arc detector is combined only when the internal grounding wire is installed in the field.

In addition, according to the present invention, when a sufficient amount of leakage on the printed circuit board is not secured, as shown in Figure (2), when the positive charge of the leakage current prevails in the vicinity so that the electric force line is concentrated between the R terminal and the metal plate (conductor), the conductor becomes a negative charge, and the The opposite holds true.

Frequency modulation compensation principle explanatory diagram

(1) Coil compensation (2) Conductor compensation

Therefore, according to the present invention, noise and electromagnetic waves are removed by keeping the amplitude constant without external interference by the frequency compensation signal while changing the frequency according to the electric signal in a series of constant amplitudes, and the influence of the surroundings by making the amplitude constant The noise is removed by adjusting the amplitude to a constant again even when receiving .

As shown in Fig. 2, the multi-functional non-electric shock protection system for no electric shock according to the present invention shields, absorbs (disappears) and reduces leakage current with the multi-function earth fault shielding unit 10 that performs earth fault current shielding and ground distribution. It is composed of a multifunctional electric shock protection unit 90 to prevent an electric shock accident and to prevent an external surge to prevent the occurrence of overvoltage.

The multi-function earth fault shielding unit 10 and the multi-function non-electric shock protection unit 90 are commonly connected to the external input terminals of the same three-phase input, that is, the same power R phase, neutral N phase, and ground G phase, and complement each other to provide non-electric shock protection operation. carry out

The multi-function ground fault shielding unit 10 has a power line terminal (L) connected to the coil (CL) terminal 2' of the relay (1) as shown in FIG. The diode 3 and the first resistor 4 are connected in series. A neutral wire N is formed between the first resistor 4 and the coil CL. The relay 1 is composed of a first switch DY1 and a second switch DY2, and has a second resistor 5 in common with a terminal 4' of the first switch DY1 and a terminal 8' of the second switch DY2. ) is connected to the load terminal (E2). In the first bridge circuit 11, the terminal 3' of the first switch DY1 and the terminal 6' of the second switch DY2 are simultaneously connected to the rectifying input terminal thereof, and the output terminals thereof are arranged in parallel and second neon lamps 6 and 7 are installed. The first switch DY1 has a terminal 3' connected to the load ground line E1. The second switch DY2 connects the third neon lamp 8 and the third resistor 9 in series to their terminal 6' and then connects to the ground wire FG, and at the same time to the leakage ground wire EPG.

Therefore, in this multifunctional ground fault shielding unit 10, when normal power is applied, the first light emitting diode 3 is turned on, the relay coil CL is excited, and the first and second switches DY1 and DY2 are switched and the relay (CL) Connect terminals 6' and 3' to terminals 4' and 8', respectively, and connect to the load terminal (E2) and the load ground terminal (E1) to power the load to be used, that is, an electric device (not shown). is in the state of being approved.

If the multi-function ground fault shielding unit 10 generates a leakage current due to a ground fault in the leakage ground wire (EPG), the first and second switches DY1 and DY2 via the fourth resistor 12 are connected to the terminals 6' and 3' are connected to terminals 7' and 5', respectively, and the leakage current is rectified by connecting it to the rectifying terminal of the first bridge circuit 11, and the rectified power is supplied to the first and second terminals connected in parallel to the output terminals thereof. 2 The neon lamps 6 and 7 are turned on, the third neon lamp 8 is turned on at the terminal 6', and the voltage is dropped by applying the third resistor 9 to the main control unit 40 to be described later. Make the ~10V voltage recognized.

The non-electric shock protection unit 90 first briefly describes the configuration. As shown in FIG. 2, the power line terminal (L) and the neutral line (N) have a noise filter unit 20 for shielding, absorbing and reducing leakage current, and a system power supply. When detecting abnormal output of the power supply unit 30, the main control unit 40, which controls each part of the system to keep the current leakage within 5 mA in any situation to output the system normal power, and the main control unit 40 Abnormality detection unit 50 that collects leakage current and noise current as power to use, pulse width modulation control unit 60 that receives power from abnormal detection unit 50 and modulates amplitude and frequency to compensate, and polarity of input power It is composed of polarity display units 70 that detect and display an error.

In more detail, the noise filter unit 20 includes a filter 21 as shown in FIG. 4A , the power terminal L is connected to the filter terminal 2 and the filter terminal 4 is connected to the neutral wire N4, and at the same time Filter terminal 2 is connected to the neutral terminal (N) via the first capacitor (22). The filter terminal 1 is connected to the fourth neon lamp 55 via the tenth resistor 54 of the abnormality detection unit 50, which will be described later, and simultaneously via the second and third capacitors 23 and 24. It is connected to the polarity indicator 70 , the leakage ground wire (EPG) and the neutral wire (N4).

Therefore, the noise filter unit 20 not only removes the ripple noise of the power supply voltage of each phase, but also reduces the leakage current caused by the occurrence of the ground fault, the ground fault detection terminal G1 in the middle of the second and third capacitors 23 and 24. ) and leads to the neutral terminal (N4), so that the ground fault voltage applied to the main control unit 40 is applied to less than 10 volts from the zero potential phenomenon due to “zero potential”.

That is, the noise filter unit 20 detects the overvoltage current caused by the ground fault at the ground fault detection terminal G1 between the second capacitor 23 and the third capacitor 24 by the main control unit 40 and detects the load or Since it is connected with a leakage grounding wire (EPG), the first switch DY1 and the second switch DY2 of the relay 1 are operated in the ground fault shielding unit 10 to transfer the leakage current to the rectifying terminal of the first bridge circuit 11 . The first and second neon lamps 6 and 7 connected in parallel are rectified by connecting to the It is applied to the resistor 9 to induce a voltage drop of 10V or less.

The power supply unit 30 is configured to apply power to the main control unit 40 and the pulse width control unit 60 as shown in FIG. (FG) is connected, and the fifth resistor 32 and the second light emitting diode 33 are connected to the intermediate terminals. When the normal power is applied, the second light emitting diode 33 is turned on.

In the abnormal display unit 80, the seventh resistor 35 and the third light emitting diode 36 and the sixth diode 37 are connected in the reverse direction between the power terminal L1 and the neutral wire N1, and the neutral wire N1. When abnormal power is applied, the third light emitting diode 36 is turned on.

The abnormality detection unit 50 is composed of first, second and third collecting units 51, 52 and 53, which are characteristic of the present invention, as will be described later. The first, second and third collecting units 51, 52 and 53 are, respectively, in the drawings for convenience, the first coil CL1, the first parallel capacitor C1, the second coil CL2 and the second coil CL2. It is composed of two parallel capacitors C2 and a third coil CL3 and a third parallel capacitor C3. The first collecting unit 51 has an input terminal connected to the power line terminal L3 and an output terminal connected to the pulse width modulation control unit 60 and the ground line FG via a neutral terminal N3. Also, the first collecting unit 51 is connected to the fourth neon lamp 55 via the tenth resistor 54 . The second collecting unit 52 has an input terminal connected to the fourth neon lamp 55 via a power line terminal L3 and a 10 resistor 54, and its output terminal is a pulse width modulation control unit 60 and a ground wire FG. ) is connected to The third collecting unit 53 has an input terminal connected to the power line terminal L3 and a neutral wire terminal N4 and an output terminal commonly connected to the pulse width modulation controller 60 and the ground wire terminal FG, and a fourth diode 59 ), the ground wire terminal FG of the fourth neon lamp 55 is separated from its input terminal.
It is to be noted here that the first, second and third collection units 51, 52 and 53 are the structures of which will be described in detail later, and each of these is a power line terminal (L), a neutral wire (N) and a ground wire terminal. Voltage that is connected between (FGs) and leaks to the ground line, for example, in the case of power supply 220V, collect 0 ~ 10V and current 0 ~ 500mA and keep it within 5mA. The pulse width modulation control unit 60 recognizes the leakage voltage current and converts the voltage frequency into a power supply voltage with a constant amplitude by performing pulse width modulation compensation for each phase as shown in FIG. 1 . Thereafter, the main control unit 40 sets the potential difference of the normal power source to “zero potential”, collects leakage current from nearby electric devices and leakage current generated by a ground fault by itself, extinguishes it in the tenth neon lamp 55, and shields it do.

delete

In addition, the first, second and third collecting units 51, 52, and 53 are each in parallel to the first to collect and compensate for the leakage current when the leakage current is leaked to the power line terminal and the neutral line terminal when the collection amount of the leakage current is insufficient. , the second and third frequency compensators 56, 57, 58 are provided to be affected by the magnetic field as shown in Fig. It absorbs leakage current, that is, electromagnetic wave and noise around it, collects it by the flat coil, and applies it to the pulse width modulator 60 to modulate the leakage current frequency and each phase to make the phase difference “zero potential”, so it is always at a normal frequency The main control unit 40 induces the output of the power with

The first, second, and third frequency compensators 56, 57, 58 include a conductor 41 installed on a substrate as shown in FIG. 4C, a high-conductivity mesh 42 covering the conductor, and the It is composed of a cylindrical permanent magnet 43 of a strong magnetic material placed in a state in which the bottom is in contact with the mesh and the conductor and is in contact with the center of the mesh 42 .

In addition, the abnormality detection unit 50 blocks various noises coming into the line between the frequency band of 150KHz to 1GHz from the system in advance, and makes the main control unit 40 recognize the external signal on the line so that it does not enter the basic line. To prevent the electric field line from leaking the equipotentialized potential, not to be affected by harmonics such as the 3rd, 5th, and 7th external signals, and also not to be affected by the 2nd, 4th, 6th harmonics of communication This prevents the signal on the internal line of the applied electric device from being distorted.

The polarity display unit 70 is connected to the leakage ground wire terminal (EPG) via the point (A) of the leakage power from the ground fault detection terminal (G1) as shown in FIG. 4B, and the power supply from the power line terminal (L) is a noise filter It is connected to the input terminal of the second collecting unit 52 via the point B and the point D via the output terminal 3 of the coil 21 of the part 20 . The power terminal L1 is connected to the point C and the point D is connected to the third collecting unit 53 and at the same time connected to the ground wire terminal FG of the fourth neon lamp 55 .

Therefore, the fifth diode 71, the fourth light emitting diode 72, and the seventh resistor 73 are connected in series between the point B and the point C, and the leakage current from the ground fault detection terminal G1 is is connected to the point B, so that the fourth light emitting diode 72 is turned on. At the same time, the normal power detection unit 61 is connected to the point B. The normal power detection unit 61 includes a third bridge circuit 62, and the third bridge circuit 62 has an input terminal connected to the power line terminal L1 via the point B so that normal power is applied, and A sixth resistor 65 is connected to the output terminal of the sixth light emitting diode 63 and the sixth capacitor 64 connected in parallel to the output terminal. Here, the sixth light emitting diode 63 represents the application of normal power.

On the other hand, the abnormal overvoltage connected from the power line terminal (L) to the point (C), to be precise, the output terminal of the seventh resistor (73) is the diode 74, the seventh light emitting diode (75) and the eighth resistor (76) connected in series. It is detected by the abnormal voltage detection terminal (G2) through First and second voltage-dropping diodes 77 and 78 are oriented in opposite directions to the abnormal voltage detection terminal G2 and are connected to the ground line terminal FG of the fourth neon lamp 55 and at the same time, the ninth It is connected to the leak detection line EPG via a resistor 79 . Therefore, when overvoltage or reverse voltage is applied, the seventh light emitting diode 75 is turned on to indicate abnormal power application.

The present invention, as shown in FIG. 5, the multi-function non-electric shock protection method checks whether the power supply is normal or abnormal when the power is turned on, and the operation of the system is described as follows.

In order to operate the system, in step S1, power is supplied to the power supply line terminal (L), the neutral line terminal (N) and the ground line terminal (FG) of the distribution panel power source R-phase, N-phase, or T-phase power (not shown).

In step S2, the connection of power to the power terminal (L), the neutral wire terminal (N) and the ground wire terminal (FG) is checked. In step S3, it is determined whether the normal polarity is applied, and when it is confirmed that the normal power is applied, the process moves to step S10 to perform a system control operation. If the connection is not of the normal polarity, proceed to step S5 and check the connection to the ground wire terminal. That is, when power is applied to the neutral wire terminal (N) or the ground wire terminal (FG), it is determined whether the other terminal is grounded. If the grounding is not made, the process proceeds to step S6 to confirm that the fourth light emitting diode 72 is turned on.

If the ground line is not connected in step S5 or the fourth light emitting diode 72 is turned on in step S6, the power polarity is changed in step S7 to connect, and then to step S10, the non-electric shock protection unit 90 ) to control the operation.

In the subsequent step (S11), the ground fault current is sensed, the electronic application device leakage current is sensed, the leakage current is sensed when the power is turned on, and the leakage current of the first, second and third collection units is checked, and the step (S12) 1 voltage, 2 temperature, 3 leakage amount, and 4 arc voltage are displayed on the self-display unit (not shown).

In step S13, it is determined whether the overvoltage is applied. If the overvoltage application is detected, the process proceeds to step S4. Otherwise, the flow advances to step S14 to determine whether the leaked voltage is 10V and the current is 5mA or less.

In step S14, if the leakage current voltage current is 10V and 5mA or more, respectively, it moves to step S5, and if the leakage current voltage current is 10V and 5mA or less, respectively, it moves to step S16 and operates as the main controller "zero potential" Switch to monitoring function. After that, in steps S16, S17, and S18, the leakage current is sequentially collected and switched to the arc detection mode, and electromagnetic noise is collected and applied to the pulse width control unit 60 .

Then, in step S19, it is determined whether the operation is normal, and if not, the circuit breaker of the distribution panel is operated as an abnormal operation in step S20, and the operation state is maintained by moving to step S21.

It is possible to prevent electric shock accidents due to leakage current in industrial facilities, and even when electrical application equipment is submerged, it does not cut off the supply current and operates without electric shock to prevent secondary damage.

It prevents electric shock accidents caused by flooding of distribution boxes/distribution boxes of street lights/security lights and agricultural facilities, reduces tripping of circuit breaker due to leakage current, and prevents secondary damage.

10: multi-function ground fault shielding unit 20: noise filter unit
30: power unit, 40: main control unit,
50: abnormality detection unit 60: pulse width modulation control unit
70: polarity display unit 80: error display unit
90: no electric shock protection part 1: relay
6, 7, 8, 55: 1st, 2nd, 3rd, 4th neon lamp
51, 52, 53: first, second, third collecting unit 56, 57, 58: first, second, third frequency compensating unit

Claims (8)

The power supply unit that confirms the application of normal power and supplies the rectified power to the main control unit and the pulse width control unit, the main control unit that controls each part of the system to output the system normal power, recognizes the leakage voltage current and adjusts the voltage frequency to the pulse width In the multifunctional electric shock-free protection system having a pulse width modulation control unit that converts to a power voltage of a constant amplitude by modulation compensation,
It detects an abnormal state due to the occurrence of leakage current due to ground fault, and this leakage current operates the relay unit (1) and passes through the bridge circuit (11). A multi-function ground fault shielding unit 10 for shielding leakage current and outputting an unrectified current to the load ground terminal (E1) so as to perform a ground distribution;
A filter 21 for removing the ripple noise of the input power from the power line terminal (L) and the neutral line terminal (N) is provided with second and third capacitors 23 and 24 sequentially connected to the filter terminal 1 in series A noise filter unit ( 20), between the power terminal (L1) and the neutral terminal (N1), the seventh resistor (35), the third light emitting diode (36) and the sixth diode (37) are connected in the reverse direction to provide abnormal power to the neutral terminal (N) When this is applied, the abnormality display unit 80 that turns on the third light emitting diode, and the first, second and third collecting units that collect the leakage current between the power line, the load ground line and the ground line when detecting an abnormal output of the main control unit (51), (52) and (53), the first, second and third collecting units (51, 52, 53) are connected in parallel to each of the collecting units to determine the shortfall of the leakage current collected by the surrounding units. The abnormality detection unit 50 and the point B, which are composed of first, second and third frequency compensators 56, 57, 58 for collecting and compensating electromagnetic wave and noise current, and for collecting leakage current into usable power source ) and the point (C), the fifth diode (71), the fourth light emitting diode (72), and the seventh resistor (73) are connected in series, and the leakage current from the leak detection terminal (G1) is the point (B) is connected to so that the fourth light emitting diode is turned on, and a normal power detection unit is connected to the point B to apply normal power to the third bridge circuit 61, and the sixth light emitting diode 63 displays the application of normal power In addition, when an abnormal voltage connected from the power line terminal (L) to the point (C) is sensed at the abnormal voltage detection terminal (G2), and overvoltage and reverse voltage are applied, the seventh light emitting diode 75 is turned on and the abnormal voltage is applied Multi-function non-electric shock protection system, characterized in that it is composed of multi-function non-electric shock protection units (90) consisting of polarity display units (70) to display.
The method according to claim 1,
The multi-function ground fault shield 10 is connected to the coil (CL) terminal 2' of the relay having a power line terminal (L) composed of a first switch (DY1) and a second switch (DY2) and a first diode to the terminal 1' (2), the first light emitting diode 3 and the first resistor 4 are connected in series, and a neutral wire terminal N is formed between the first resistor 4 and the coil CL, and the terminal of the first switch 4' and terminal 8' of the second switch are commonly connected to the load power terminal E2 via the second resistor 5, and terminal 3' of the first switch and terminal 6' of the second switch are connected to the first Connected to the rectifying terminal of the bridge circuit 11, first and second neon lamps 6 and 7 arranged in parallel are installed at the output terminals of the first bridge circuit 11, and the first switch terminal 5' and the second switch terminal 7' is connected to the leak detection terminal (EPG), and the second switch terminal 6' is connected to the ground wire terminal FG where the third neon lamp and the third resistor 9 are connected in series. Multifunctional electric shock protection system, characterized in that.
3. The method according to claim 1 or 2,
The multifunctional ground fault shielding unit 10 is connected to the load power terminal (E2) and the load grounding terminal (E1) when the first light emitting diode (2) is turned on and the relay coil (CL) is excited when normal power is applied. When a leakage current due to a ground fault occurs in the leakage grounding terminal (EPG) while power is applied to the electrical application load, terminals 6' and 3' of the first and second switches DY1 and DY2 are connected to terminal 7'. and 4', the leakage current is connected to the rectifying terminal of the first bridge circuit 11 to light the first and second neon lamps 6 and 7 connected in parallel to the output terminal, and simultaneously to the terminal 6 ' A multifunctional no-electric shock protection system, characterized in that by turning on the third neon lamp (8) and applying it to the third resistor (9), the multi-function no-load control unit recognizes the 0 ~ 10V voltage at the same time as the voltage drop.
The method according to claim 1,
In the noise filter unit 20, the main control unit detects an overvoltage due to a ground fault at the ground fault leak detection terminal G1 between the second capacitor 23 and the third capacitor 24, and the first and The first and second switches of the second relays DY1 and DY2 are operated to be connected to the first bridge circuit for rectification, and the first and second neon lamps 6 and 7 connected in parallel to their output terminals are turned on and at the same time A multifunctional electric shock protection system, characterized in that the third neon lamp (8) is turned on at the terminal 6' and the voltage drops below 10V by applying it to the third resistor (9).
The method according to claim 1,
The abnormality detection unit 50 has an input end of the first collecting unit 51 connected to the power end of the fourth neon lamp 55 via a power line terminal L3 and a tenth resistor 54, and the first collecting unit The output terminal of 51 is connected to the pulse width modulation control unit 60 and the ground wire terminal FG via the neutral terminal N3, and the input terminal of the second collection unit 52 is connected to the third power terminal L3 and the second 10 It is connected to the power terminal of the fourth neon lamp 55 via the resistor 54 and the output terminal is connected to the pulse width modulation control unit 60 and at the same time connected to the ground wire terminal FG, and the third collecting unit 53 The input terminal of is connected to the power terminal of the fourth neon lamp 55 via the power line terminal L3 and the tenth resistor 54 via the neutral wire terminal N4, and the output terminal is connected to the pulse width modulation controller 60 and It is connected to the ground wire terminal (FG) and installed in a state in which it is separated from the ground wire terminal (FG) of the fourth neon lamp 55 by the fourth diode 59 , so that the leakage voltage current is controlled by the pulse width modulation controller 60 It recognizes and compensates the voltage frequency by pulse width modulation to convert it to a power supply voltage with a constant amplitude. and a multifunctional electric shock-free protection system, characterized in that it is extinguished (absorbed) and shielded by the fourth neon lamp.
6. The method of claim 5,
The first, second and third compensating parts 56, 57, 58 are a conductor 41 installed on a substrate, a conductive mesh 42 surrounding the conductor to cover the conductor, and the mesh 42 and the conductor It is composed of cylindrical permanent magnets 43 of strong magnetic material placed in a state in which the bottom is in contact with the bottom and is in contact with the center of the mesh 42, and the leakage current and noise are sucked in the vicinity and collected by a flat coil to modulate the pulse width. Multifunctional electric shock protection system, characterized in that the main control unit always induces the output of the power having a normal frequency as the phase difference is “zero potential” by precisely modulating the frequency and each phase as it is applied to the part.
The method according to claim 1,
In the polarity display unit 70, the leakage power from the ground fault detection terminal (G1) is connected to the leakage ground terminal (EPG) via the point (A), and the power supply from the power line terminal (L) is the noise filter unit 20 . It is connected to the neutral wire terminal (N4) and the ground wire terminal (FG) of the third collecting unit 53 via the output terminal 3 of the coil 21, and the power wire terminal (L) is connected to the point (C), the point (D) is a multifunctional electric shock protection system characterized in that it is connected to the ground side of the fourth neon lamp (55).
In the multifunctional electric shock-free protection method,
When the power is turned on, the multi-function ground fault shielding unit 10, the noise filter unit 20 and the abnormality display unit 80 check the power connection to the power line terminal (L), the neutral wire terminal (N) and the ground wire terminal (FG). And, when it is determined that the normal polarity is applied and it is confirmed that the normal power is applied, the main control unit 40 performs a system control operation,
If the connection is not in the normal polarity, check the grounding wire connection, and when power is applied to the neutral wire terminal (N) or the ground wire terminal (FG), it is determined whether the other terminal is grounded. When 72 is lit, the power polarity is changed and connected to perform operation control of the non-electric shock protection unit 90,
When the main control unit 40 in the non-electric shock protection unit 90 turns on power, the multi-function earth fault shielding unit 10 detects a ground fault and detects a leakage current of an electric device, and the first, second and third collecting units 51 , 52, 53), the pulse width modulator 60 induces the electric device to use the fixed power to make the electric device uninterruptible, and then determines whether the overvoltage is applied,
When overvoltage application is detected, it is judged whether the voltage is 10V, current 5mA or less, and if the voltage is 10V, current 5mA or more, if the ground line is not connected, change the power polarity and connect, to control the operation of the system,
If the voltage is 10V, the current is less than 5mA, the main control unit 40 switches to the "zero potential" operation monitoring function, then collects the leakage current in turn, switches to the arc detection mode, collects noise and applies it to the pulse width control unit 60,
A multi-function non-electric shock protection method, characterized in that the circuit breaker is operated as an abnormal operation if it is not normal by judging whether it is in normal operation, and maintains the operating state if it is in normal operation.

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