KR102514237B1 - Earth Leakage Breaker Built-In Switch - Google Patents

Abstract

A switch with a built-in earth leakage breaker is disclosed. The switch with a built-in earth leakage breaker according to an embodiment of the present invention comprises: an earth leakage breaker that receives power provided from the outside; a switching unit that receives the power transmitted from the earth-leakage breaker and applies the power to a lamp through a switching operation; and a main body housing that mounts the earth leakage breaker and the switching unit therein, mounts a push button of the switching unit to be exposed to the outside, and constructed on an installation wall. According to the present invention, it is possible to provide a switch with a built-in earth leakage breaker that includes a structure that can easily and quickly detect the location of an electric leak and take follow-up measures for the relevant part in a safe state.

Description

Earth Leakage Breaker Built-In Switch}

The present invention relates to a switch, and more particularly, to a switch with a built-in earth leakage interrupter including a configuration capable of quickly detecting a location of an earth leakage through the switch.

An earth leakage breaker (ELB) cuts off the applied power when a leakage current of a certain level or more is generated, thereby performing a function of protecting facilities such as facilities.

Accordingly, at least one earth leakage breaker of various types is necessarily provided in all homes, buildings, and other power facilities for safety.

In addition, the earth leakage breaker is designed to prevent electric shock accidents to the human body by quickly detecting and blocking leakage current that leaks into the ground where the equipment is installed and to suppress fires caused by deterioration of equipment and lines caused by leakage current. It is installed and operated in most load circuits where alternating current is supplied.

On the other hand, Korea Electrical Safety Corporation conducts regular inspections by inspectors for each household and building in Korea every 1-3 years, but it is a serious ecology that requires heavy inspection resources to regularly inspect about 23 million households nationwide. , Because there is a limit to regular inspection, certain parts of the defect are bound to occur through regular inspection. Mechanical or electric/electronic defects occur due to electric leakage of equipment and frequent use by users, which may cause electrical safety accidents, electric shocks, and human casualties in the future, and accidents are actually occurring.

Accordingly, the government or the public corporation is conducting publicity and broadcasting recommending that users perform an earth leakage test once a month, but users are not doing it properly due to anxiety about power outages and earth leakage tests.

Accordingly, for homes and buildings across the country and other power facilities that require commercial power, the Ministry of Trade, Industry and Energy and city and provincial governors check whether the electrical facility construction plan including earth leakage breaker is approved and whether the reported details conform to the electrical facility technical standards. It is carried out through the pre-use inspection of the Korea Electrical Safety Corporation, which has been entrusted, and regular inspections are conducted for power facilities such as homes and buildings that have passed the inspection with the inspection funds of the Korea Electrical Safety Corporation. It is recommended to conduct an earth leakage interruption test.

Due to the installation of such an earth leakage breaker and the regular inspection of the earth leakage breaker by the Korea Electrical Safety Corporation, the loss of life was reduced, but the malfunction of the earth leakage breaker was caused by manufacturing process defects of the earth leakage breaker and mechanical and electrical/electronic failures according to the usage environment. Accidents and human life are constantly occurring, and problems such as power outages and instantaneous voltage drops are occurring during facility operation.

In addition, it is often very difficult to find the cause of an accident when an earth leakage breaker installed to protect equipment of unmanned bases malfunctions. It is followed by the trouble of having to visit the site by the facility operator.

On the other hand, in the case of the existing earth leakage breaker, it is recommended that the user press the test button about once a month to check whether there is an abnormality in the earth leakage detection part, and it is operated when the test button is pressed. to judge

The law stipulates that the leakage detection unit of the earth leakage breaker operates for a leakage current of 30 mA or more, but does not operate for a leakage current of 15 mA or less.

In other words, for leakage current of 15mA or less, which is not related to safety, the earth leakage breaker must be inactive. However, in the case of the existing earth leakage breaker, when the manager presses the test button to check the leakage current of the earth leakage detection part, the current of 30mA or more flows, and at this time, the main circuit trips. The leakage current of 15mA or less, which should be inactive, is regarded as leakage and may have a problem of tripping the main circuit.

Accordingly, even with a minute leakage current, the leakage detection unit of the earth leakage breaker operates and the main circuit is tripped, i.e., a non-voltage is generated, causing inconvenience in use and further causing property damage due to power failure.

That is, a general earth leakage breaker has a signal generation unit that converts AC power input from the outside into DC and generates voltage, reference signal, or current required for operation of each unit, and a leakage current transformer outputs when a leakage occurs in an electric line. A leakage current detection circuit comprising a signal processing unit that performs processing such as amplification on a current detection signal, and a signal output unit that determines whether or not the electric line is blocked by the signal processed by the signal processing unit and outputs a necessary blocking signal Accordingly, Korean Patent Publication No. 10-2010-0080188 (published on July 8, 2010) and Japanese Patent Publication No. 57-95132 (published on June 12, 1982) have the same configuration as above. Disclosed is a leakage current detection device for an earth leakage breaker having a circuit breaker.

However, a BJT (Bipolar Function Transistor) element of 1 μm or more, in some cases, 100 μm or more was used as a circuit element constituting the signal generation unit, signal processing unit, and signal output unit, and accordingly, the leakage current detection device There are limitations such as miniaturization, high speed, and low power consumption.

Therefore, the conventional earth leakage breaker has a problem in that it cannot supply the necessary power because it is necessary to cut off the power of the entire household in order to test the earth leakage breaker for failure. Even after completion, when the power is cut off due to a ground leakage breaker tripped due to factors such as surge overvoltage caused by a short circuit or lightning strike, the power is not supplied to the circuit breaker after the cause of the trip is resolved.

Therefore, there is a need for a technique capable of solving the above-mentioned problems according to the prior art.

Korean Patent Publication No. 10-2010-0080188 (published on July 8, 2010)

An object of the present invention is to provide a switch with a built-in earth leakage breaker including a structure capable of easily and quickly detecting a location of a short circuit and taking follow-up measures in a safe state.

In order to achieve this object, a switch having a built-in earth leakage breaker according to an aspect of the present invention includes an earth leakage breaker for receiving power provided from the outside; a switching unit receiving power transferred from the earth leakage blocking unit and applying power to the lamp by a switching operation; and a body housing having a structure in which the earth leakage blocking unit and the switching unit are mounted inside, the push button of the switching unit is mounted to be exposed to the outside, and is constructed on an installation wall surface.

In one embodiment of the present invention, the earth leakage blocking unit may include a first connection terminal for receiving power provided from a switchboard installed in an installation building; a second connection terminal that transmits power transmitted from the first connection terminal to the switching unit and is connected to a transfer line of the switching unit; and a cut-off driving unit electrically connecting the first connection terminal and the second connection terminal and closing the electrical connection state when an electric leakage is detected.

In this case, a plurality of switches with built-in earth leakage breaker are installed in the installation building, and each earth leakage breaker mounted on the switch with built-in earth leakage breaker is connected in parallel by one or two power lines from the switchboard installed in the building. can be connected

In one embodiment of the present invention, the main body housing, the push button mounted on one side of the outer surface of the main housing, to perform a switching operation by a user's touch or pressing operation; and a trip button mounted on the other side of the concave surface of the body housing and configured to operate the earth leakage blocking unit by a user's touch or pressing operation.

In addition, the body housing may include a first lamp mounted adjacent to the push button and visually outputting an on state and an off state of the switching operation of the switching unit; and a second lamp mounted with the trip button and visually outputting whether or not the earth leakage blocking unit is blocked.

In one embodiment of the present invention, the earth leakage breaker is implemented based on the Internet of Things (IoT), monitors and controls the information of the earth leakage breaker installed in each home or business building, and supplies it to the building of the household or business It is possible to conduct an earth leakage breaker test without a power outage, which is a power interruption, and to automatically restore the earth leakage breaker even after the test is completed.

In this case, the earth leakage blocking unit includes a power inlet into which commercial power is introduced in order to supply power to households or buildings in a workplace during the earth leakage blocking test; a parking end portion for cutting off power introduced through the power inlet during an earth leakage cutoff test; A bypass unit for continuously supplying power in a state in which power is cut off through the parking end unit; a power take-out unit for receiving power through the bypass unit during an earth leakage cutoff test and receiving power from a parking end portion where power is not cut off in normal times, not during an earth leakage cutoff test; Leakage current measurement unit for measuring leakage current through the parking end during the earth leakage cutoff test; a cut-off state detection unit for detecting a cut-off state through the parking end during an earth leakage cut-off test; an auxiliary power unit for charging by receiving power from the power inlet and supplying the charged power when power is not supplied through the power inlet; Power failure detection unit for detecting whether or not the power of the auxiliary power unit is supplied in an emergency such as a power outage; a control unit for driving by receiving power from the auxiliary power supply unit, receiving signals output from the leakage current measuring unit, the blocking state detection unit, and the power outage detection unit, and controlling and driving the unit; and an uninterruptible self-diagnosis test button provided at the front center of the earth leakage blocking unit and driven to perform uninterruptible self-diagnosis for an earth leakage interruption test.

In addition, the earth leakage blocking unit may include a bypass driver for cutting off power to the bypass unit to which power is being applied when the earth leakage blocking test is completed through a control signal from the control unit; For driving a motor to raise the circuit breaker of the parking end to the on position so that power can be applied through the parking end where power is cut off when the earth leakage blocking test is completed through the control signal of the controller motor driving unit; a motor driven by a signal from the motor driving unit; a power detection unit for detecting a voltage of power supplied through the power take-off unit and transmitting the detected signal to the control unit; And it is embedded in the control unit, receives test information shared in real time from the earth leakage breaker through short-range or long-distance wireless communication, displays the received test information on a program screen, and interworks with the main server or portable terminal to enable monitoring. It may be configured to further include a; communication unit to.

As described above, according to the switch with built-in earth leakage interrupter of the present invention, by having a specific structure of the earth leakage interrupter, the switching unit, and the body housing, it is possible to easily and quickly detect the location of the leakage, and place the relevant part in a safe state. It is possible to provide a switch with a built-in earth leakage breaker that includes a structure that can take follow-up measures.

In addition, according to the switch with a built-in earth leakage interrupter of the present invention, by providing a push button, a trip button, a first lamp and a second lamp of a specific structure, it is possible to easily and quickly detect the location of an earth leakage, and place the relevant part in a safe state. It is possible to provide a switch with a built-in earth leakage breaker that includes a structure that can take follow-up measures.

In addition, according to the built-in earth leakage blocking switch of the present invention, it includes a power inlet, a parking end, a bypass, a power take-out, a leakage current measuring unit, a cut-off state detection unit, an auxiliary power supply unit, a power failure detection unit, and a control unit having a specific structure. By providing an earth leakage breaker to notify the user of the failure of the earth leakage breaker's inherent function through a self-diagnosis test, the power supplied to the furniture or business building is not completely cut off during the earth leakage interruption test, and the test is completed when the earth leakage breaker is cut off. It is possible to automatically restore even after that, and since it is implemented based on the Internet of Things (IoT), it is possible to provide a switch with a built-in earth leakage breaker capable of monitoring such as control through a main server or portable terminal that can be linked with an earth leakage breaker. .

1 is a schematic diagram showing an earth leakage breaker according to the prior art.
2 is a wiring diagram showing a switch with a built-in earth leakage breaker according to an embodiment of the present invention.
3 is a front view showing an outer surface of a body housing of a switch with a built-in earth leakage breaker according to an embodiment of the present invention.
4 is a configuration diagram showing the relationship of each component constituting the earth leakage interrupter of a switch with built-in earth leakage interrupter according to another embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. Prior to this, terms or words used in this specification and claims should not be construed as limited to ordinary or dictionary meanings, but should be interpreted as meanings and concepts consistent with the technical spirit of the present invention.

Throughout this specification, when a member is said to be located “on” another member, this includes not only a case where a member is in contact with another member, but also a case where another member exists between the two members. Throughout this specification, when a certain component is said to "include", it means that it may further include other components without excluding other components unless otherwise stated.

2 is a schematic wiring diagram showing a switch with built-in earth leakage interrupter according to an embodiment of the present invention, and FIG. 3 is a front view showing an outer surface of a body housing of a switch with built-in earth leakage interrupter according to an embodiment of the present invention. is shown

Referring to these drawings, the switch 100 with built-in earth leakage interrupter according to the present embodiment includes an earth leakage interrupter 110 having a specific structure, a switching unit 120, and a main body housing 130, thereby detecting a leaked location. It is possible to provide a switch with a built-in earth leakage breaker, which can be easily and quickly detected, and includes a structure in which follow-up measures can be taken in a safe state.

Hereinafter, each component constituting the earth leakage blocking unit built-in switch 100 according to the present embodiment will be described in detail with reference to the drawings.

The earth leakage blocking unit 110 according to the present embodiment has a structure that receives power supplied from the outside.

Specifically, as shown in FIG. 2 , the earth leakage blocking unit 110 may have a structure including a first connection terminal 111, a second connection terminal 112, and a cut-off driving unit 113 having a specific structure. . The first connection terminal 111 of the earth leakage breaker 110 has a structure for receiving power supplied from a switchboard installed in an installation building. The second connection terminal 112 of the earth leakage blocking unit 110 has a structure in which power transferred from the first connection terminal 111 is transferred to the switching unit 120 and connected to a transmission line of the switching unit 120. . In addition, the blocking drive unit 113 of the earth leakage blocking unit 110 has a structure that electrically connects the first connection terminal 111 and the second connection terminal 112 and closes the electrical connection state when an electric leakage is detected.

At this time, as shown in FIG. 2, a plurality of switches 100 with built-in earth leakage interrupters according to this embodiment are installed in the installation building, and at this time, each earth leakage interrupter 110 is removed from the switchboard installed in the installation building. They are preferably connected in parallel by one or two power lines.

The switching unit 120 according to the present embodiment has a structure that receives power transferred from the earth leakage blocking unit 110 and applies power to the lamp by a switching operation.

The body housing 130 according to the present embodiment has a configuration in which the earth leakage blocking unit 110 and the switching unit 120 are mounted therein, and the push button 131 of the switching unit 120 is exposed to the outside. It is a structure that is constructed on the installation wall.

Meanwhile, as shown in FIG. 3 , the body housing 130 may have a structure including a push button 131 and a trip button 132 having a specific structure.

Specifically, the push button 131 of the body housing 130 is mounted on one side of the outer surface of the body housing 130, and can perform a switching operation by a user's touch or push operation. In addition, the trip button 132 of the main housing 130 is mounted on the other side of the concave surface of the main housing 130, and operates the earth leakage blocking unit 110 by a user's touch or pressing operation. can

In some cases, as shown in FIG. 3 , a first lamp 133 and a second lamp 134 performing specific roles may be mounted on the outer surface of the body housing 130 .

Specifically, the first lamp 133 of the body housing 130 is mounted adjacent to the push button 131, and can visually output the on state and off state of the switching operation of the switching unit 120. there is. In addition, the second lamp 134 of the body housing 130 is mounted with the trip button 132 and can visually output whether or not the earth leakage blocking unit 110 is blocked.

In this case, according to the present embodiment, by providing the push button 131, the trip button 132, the first lamp 133, and the second lamp 134 of a specific structure, it is possible to easily and quickly detect the location of a short circuit. It is possible to provide a switch with a built-in earth leakage breaker including a structure for taking follow-up measures in a safe state of the corresponding part.

FIG. 4 is a configuration diagram showing the relationship of each component constituting the earth leakage interrupter of the earth leakage interrupter built-in switch according to another embodiment of the present invention.

Referring to FIG. 4 , the earth leakage blocking unit 110 according to this embodiment may be implemented based on the Internet of Things (IoT). In this case, by monitoring and controlling the information of the earth leakage breaker 110 installed in each home or business building, it is possible to conduct an earth leakage blocking test without a power outage, which is to cut off the power supplied to the household or business building, and Even after the test is completed at the time of blocking, the earth leakage blocking unit 110 can be automatically restored.

To this end, the earth leakage blocking unit 110 according to the present embodiment includes a power inlet 141, a parking end unit 142, a bypass unit 143, a power withdrawal unit 144, and a leakage current measurement unit 145 having a specific structure. ), a cut-off state detection unit 146, an auxiliary power supply unit 147, a power failure detection unit 148, a control unit 149, and a non-interruptible self-diagnosis test button.

Specifically, the power inlet 141 of the earth leakage interrupter 110 has a structure through which commercial power is introduced in order to supply power to households or buildings in a business place during an earth leakage interruption test. The parking end portion 142 has a structure that cuts off the power introduced through the power inlet during the earth leakage cutoff test. The bypass unit 143 may continuously supply power in a state in which power is cut off through the parking end. The power take-off unit 144 has a structure in which power is applied through the bypass unit even during the earth leakage cutoff test, and power is supplied from the main end portion where power is not cut off in normal times, not during the earth leakage cutoff test. The leakage current measuring unit 145 may measure the leakage current through the parking end portion during the earth leakage blocking test. The cut-off state detection unit 146 can detect the cut-off state through the parking end portion during the earth leakage cut-off test. The auxiliary power unit 147 may receive power from the power inlet and charge it, and supply the charged power when power is not supplied through the power inlet. The power failure detection unit 148 may detect whether power is supplied to the auxiliary power unit in an emergency such as a power outage. The control unit 149 drives by receiving power from the auxiliary power supply unit, receives signals output from the leakage current measurement unit, the cut-off state detection unit, and the power failure detection unit, and controls and drives the control unit 149. At this time, the uninterruptible self-diagnosis test button is provided in the central portion of the front side of the earth leakage breaker 110 and can be driven to perform uninterruptible self-diagnosis for the earth leakage interruption test.

As shown in FIG. 4, the earth leakage breaker 110 includes a bypass driver 143a, a motor driver 143b, a motor 143c, a power detecting unit 144a, and a communication unit 149a performing specific roles. It may be a configuration that further includes.

Specifically, the bypass driving unit 143a of the earth leakage blocking unit 110 cuts off power to the bypass unit 143 to which power is being applied when the earth leakage blocking test is completed through a control signal from the control unit 149. can The motor driving unit 143b is a circuit breaker of the parking end portion 142 so that power can be applied through the parking end portion 142 where power is cut off when the earth leakage blocking test is completed through a control signal from the control unit 149. A motor can be driven to raise the to the On position. The motor 143c may be driven by a signal from the motor driving unit 143b. The power detection unit 144a detects the voltage of the power supplied through the power withdrawal unit 144 and transmits the detected signal to the control unit 149 . At this time, the communication unit 149a is embedded in the control unit 149, receives test information shared in real time from the earth leakage breaker 110 through short-range or long-distance wireless communication, and displays the received test information on a program screen. It can be interlocked with the main server or portable terminal so that monitoring is possible.

In this case, according to the present embodiment, the specific structure of the power inlet 141, the parking end 142, the bypass 143, the power take-out 144, the leakage current measuring unit 145, the blocking state detection unit 146, an auxiliary power supply unit 147, a power failure detection unit 148, and a control unit 149, by providing the earth leakage breaker 110, through a self-diagnosis test, the failure of the intrinsic function of the earth leakage breaker is reported to the user. In addition, during the earth leakage test, the power supplied to the furniture or the building of the workplace is not completely cut off, and when the earth leakage test is completed, it is automatically restored even after the test is completed, and it is conducted based on the Internet of Things (IoT). It is possible to provide a switch with a built-in earth leakage breaker capable of controlling and monitoring through a main server or portable terminal capable of interlocking.

In the above detailed description of the present invention, only specific embodiments thereof have been described. However, it should be understood that the present invention is not limited to the particular forms mentioned in the detailed description, but rather it is understood to include all modifications, equivalents and substitutes within the spirit and scope of the present invention as defined by the appended claims. It should be.

That is, the present invention is not limited to the specific embodiments and descriptions described above, and anyone having ordinary knowledge in the technical field to which the present invention belongs can make various modifications without departing from the gist of the present invention claimed in the claims. is possible, and such variations fall within the protection scope of the present invention.

100: earth leakage breaker built-in switch
110: earth leakage breaker
111: first connection terminal
112: second connection terminal
113: blocking driving unit
114: trip button
120: switching unit
130: body housing
131: push button
132: trip button
133: first lamp
134: second lamp
141: power inlet
142: parking end
143: bypass unit
143a: bypass drive unit
143b: motor driving unit
143c: motor
144: power outlet
144a: power detection unit
145: leakage current measuring unit
146: blocking state detection unit
147: auxiliary power unit
148: power failure detection unit
149: control unit
149a: communication department

Claims (5)

an earth leakage blocking unit 110 receiving power provided from the outside;
a switching unit 120 that receives power transmitted from the earth leakage blocking unit 110 and applies power to the lamp by a switching operation; and
Body housing 130 having a structure in which the earth leakage blocking unit 110 and the switching unit 120 are mounted inside, the push button 131 of the switching unit 120 is mounted so as to be exposed to the outside, and is installed on the installation wall. );
including,
The body housing 130,
a push button 131 mounted on one side of an outer surface of the main housing 130 and performing a switching operation by a user's touch or pressing operation;
a trip button 132 mounted on the other side of the concave surface of the body housing 130 and operating the earth leakage blocking unit 110 by a user's touch or pressing operation;
A first lamp 133 mounted adjacent to the push button 131 and visually outputting an on state and an off state of the switching operation of the switching unit 120; and
a second lamp 134 mounted with the trip button 132 and visually outputting whether or not the earth leakage breaker 110 is blocked;
including,
The earth leakage blocking unit 110,
A first connection terminal 111 for receiving power provided from a switchboard constructed in an installation building;
a second connection terminal 112 that transmits power transmitted from the first connection terminal 111 to the switching unit 120 and is connected to a transfer line of the switching unit 120; and
a cut-off driver 113 that electrically connects the first connection terminal 111 and the second connection terminal 112 and closes the electrical connection when an electric leakage is detected;
including,
The earth leakage blocking unit built-in switch is installed in a plurality of installation buildings,
Each of the earth leakage breaker 110 mounted on the built-in earth leakage breaker switch is connected in parallel by one or two power lines from a switchboard installed in the installation building,
The earth leakage blocking unit 110,
It is implemented based on the Internet of Things (IoT), and the information of the earth leakage breaker 110 installed in each home or business building is monitored and controlled to prevent power supply to households or business buildings. A cut-off test can be performed, and the earth leakage breaker 110 can be automatically restored even after the test is completed when the earth leakage is cut off,
The earth leakage blocking unit 110,
A power inlet 141 into which commercial power is introduced in order to supply power to households or buildings during the earth leakage cutoff test;
a parking end portion 142 for cutting off power introduced through the power inlet during an earth leakage cutoff test;
A bypass unit 143 for continuously supplying power in a state in which power is cut off through the parking end;
a power take-off unit 144 for receiving power through the bypass unit during an earth leakage cutoff test and receiving power from a parking end portion where power is not cut off in normal times other than during an earth leakage cutoff test;
Leakage current measurement unit 145 for measuring leakage current through the parking end during the earth leakage cutoff test;
a cut-off state detection unit 146 for detecting a cut-off state through the parking end during an earth leakage cut-off test;
An auxiliary power unit 147 for charging by receiving power from the power inlet and supplying the charged power when power is not supplied through the power inlet;
A power failure detection unit 148 for detecting whether power is supplied to the auxiliary power unit in an emergency such as a power failure;
a control unit 149 for driving by receiving power from the auxiliary power supply unit, receiving signals output from the leakage current measuring unit, the cut-off state detection unit, and the power outage detection unit, and controlling and driving the unit;
an uninterruptible self-diagnosis test button provided on the front center portion of the earth leakage breaker 110 and driven to perform uninterruptible self-diagnosis for an earth leakage breaker test;
a bypass driver 143a for cutting off power to the bypass unit 143 to which power is being applied when the earth leakage blocking test is completed through a control signal of the control unit 149;
When the earth leakage blocking test is completed through the control signal of the control unit 149, the circuit breaker of the parking end portion 142 is turned on so that power can be applied through the parking end portion 142 where power is cut off. A motor driving unit (143b) for driving a motor so as to be raised;
a motor (143c) driven by a signal from the motor driving unit (143b);
a power detection unit 144a for detecting a voltage of power supplied through the power take-off unit 144 and transmitting the detected signal to the control unit 149; and
The main server built into the controller 149 receives test information shared in real time from the earth leakage breaker 110 through short-range or long-distance wireless communication, displays the received test information on a program screen, and enables monitoring. or a communication unit 149a that interworks with a portable terminal;
Earth leakage blocking unit built-in switch, characterized in that it comprises a.
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