KR100756011B1 - Self-returnable electronic leakage circuit breaker having integrated double switch - Google Patents

Abstract

The present invention relates to a self-recovering type earth leakage breaker having an integrated two-stage contact opening and closing structure, and more specifically, the primary side (input) side contact checks the state of overload, ground fault, short circuit, and overcurrent to supply power according to the situation. The secondary side (output) contact is cut off by the short-circuit factor, and continuously generates a pulse signal to determine whether the dangerous situation is over, and through the judgment result, the secondary side (output) contact is turned ON. Power to be supplied again, and check the power state of the customer through the ubiquitous communication unit installed in the circuit breaker to prevent or classify the dangerous situation that may be caused by electricity in advance so that the management can be focused. Power supply provided to the output side by detecting and judging precisely and accurately about problems caused by ground fault, short circuit, over current, and short circuit. Stable supply of power supply, self-diagnosis, overload or short circuit, can cut off the power supply in advance to prevent the occurrence of fire, and if the visitor visits the customer or the customer is absent the ubiquitous communication unit It is possible to check the current state of the breaker by connecting to and to determine whether there is a fire in the present or future by using the checked data.

Short circuit, overload, power off, auto reset, ubiquitous communication,

Description

Automatic return type leakage breaker with integrated two-stage contact opening and closing structure. {Self-returnable electronic leakage circuit breaker having integrated double switch}

1 is a block diagram showing the configuration of a conventional automatic return-type earth leakage breaker;

Figure 2 is a block diagram showing the configuration of the automatic return-type earth leakage breaker having an integrated two-stage contact opening and closing structure according to the present invention.

3 is a block diagram illustrating another embodiment of FIG. 2.

* Description of the symbols for the main parts of the drawings *

100: circuit breaker 110: leakage state detection unit

111: leakage judgment unit 112: current transformer (ZCT)

120: over-current passive leakage breaker 121: first drive unit

121a: first solenoid / fully electronic trip coil

122: primary side contact 130: surge protector

140: load state detection unit 141: earth leakage blocking / return control unit

142: current transformer (CT) 150: earth leakage breaker

151: second drive unit 151a: motor

151b: second solenoid 152: secondary side contact

160: ubiquitous communication unit 170: micro voltage generation unit

The present invention relates to an automatic return type circuit breaker having an integrated two-stage contact opening and closing structure, and more particularly, the primary side contact and the secondary side contact are blocked when an overcurrent inflow and a short circuit occur, and are manually returned when the overcurrent causes. The present invention relates to an automatic return type circuit breaker having an integrated two-stage contact opening / closing structure which automatically returns when the cause of the ground fault interruption is eliminated so that the supply of power is made stable.

In general, an earth leakage breaker cuts off an input power source (AC) when a leakage current occurs due to lightning, surge, or short circuit.

These circuit breakers are used in series with a power circuit breaker that cuts off the power supply in case of overload, protecting people and property.

That is, if a leakage current occurs on the load side by connecting a power circuit breaker and an earth leakage breaker in series with the power input line, the power circuit breaker cuts off the power, and in the event of an overload, the power circuit breaker cuts off the power to prevent fire and electric shock.

However, a general earth leakage breaker has only a function of blocking a contact when an overcurrent or a short circuit occurs with one contact, and there is a problem in that it must be manually restored in order to continue using the power after the interruption.

Utility model registration No. 312397 received a utility model registration dated May 13, 2003 to solve the above problem is as shown in FIG.

Referring to the configuration of the Utility Model Registration No. 312397 with reference to Figure 1, when an abnormal current occurs due to a ground fault or a short circuit together with the conventional overcurrent blocking device 10 to protect the line from the overcurrent flowing through the distribution line, An image current transformer 20 for detecting the error, and an abnormal current detection unit for determining whether the abnormal current detected by the image current transformer 20 is greater than or equal to the reference set value, or whether the cause of leakage current is eliminated and thus the abnormal current is maintained below the reference set value. (23), and the circuit breaker according to the instructions of the interruption / return control unit 24 and the interruption / return control unit 24 to perform the function of operating the relay in the event of a ground fault or short circuit, or the cause is eliminated to return the relay. Or the relay 25 performing the return operation, and if the electric current is cut off of the relay operation, the minute current can be checked whether or not the short-circuit state of the load until the power supply is released. It consists of a small current generator 26 for supplying and an auto reset unit 27 that is shorted due to abnormal current generation and resets to supply pulses periodically so that the input signal can be compared / judged again after the earth leakage breaker is operated. do.

When the overcurrent occurs, the abnormal current is sensed by the image current transformer 22 to operate the cutoff signal input circuit 22a to cut off the power applied through the relay 25.

When the power is cut off, the micro current is supplied through the micro current generator 26 to continuously detect the short-circuit state, and the abnormal current detector 23 continuously detects the abnormal current through the image current transformer 22. Check the over current condition.

As shown in FIG. 1, the conventional invention cuts the power only for the overcurrent through the overcurrent cutoff device, and for the short circuit, cuts off the power by operating the deadlock machine, and automatically eliminates the deadlock when the cause of the cutoff is eliminated. In order to return, there is a problem that the power is frequently cut off due to a problem in contact structure of the switchgear when a ground fault or a short circuit occurs.

In addition, the circuit configuration to cut off the power supply due to a short circuit is complicated, the manufacturing time according to the complex circuit configuration is consumed a lot, there is a problem that the price competitiveness is lowered as a factor of unit price rise.

In addition to the overcurrent blocking device shown in FIG. 1, a circuit breaker according to a short circuit and an overload is currently being produced, and such a circuit breaker is being used in homes.

However, when the power is cut off by the electronic method among the current breakers, the operation of the electric devices connected to the output side is automatically performed when the power is cut off.In this case, when the instantaneous power flows, the impact of the inflow of power due to the instantaneous operation There is a problem that the power is cut off due to malfunction.

That is, when the power is cut off using the relay, the contact is instantaneously attached by the impact applied to the relay, thereby driving the driving unit to cut off the power.

In addition, such a breaker does not return again when the overload is eliminated, there is a problem that various food materials, foodstuffs, etc. are damaged as the refrigerator or freezer keeps the power off.

The self-recovering type earth leakage breaker having an integrated two-stage contact opening and closing structure according to the present invention for solving the above problems is to block only parts for ground fault, short circuit, and overcurrent with the electromagnet on the primary side, and to recover only by manual operation. It solves the fundamental problem caused by the power cut off, and on the secondary side, it is only a part related to the leakage, and the automatic return type earth leakage breaker has an integrated two-stage contact opening / closing structure which makes the power supply stable by automatically blocking and returning. The purpose is to provide.

In addition, the ground fault, short circuit, and over current detected by the primary side can be checked by the user directly or by an expert to identify the cause of the ground fault, short circuit, and over current so that the situation can not occur later. An object of the present invention is to provide an automatic return type circuit breaker having a contact opening and closing structure.

In addition, it is an object of the present invention to provide an automatic return type circuit breaker having an integrated two-stage contact opening and closing structure to prevent a fire caused by an overload, so as to cope with the situation by checking only the overload that the user does not easily recognize.

In addition, when the electric equipment connected to the output side automatically stops and operates repeatedly, power is cut off by precise driving by using a motor at the secondary side contact so as to prevent malfunction due to the instantaneous power increase. An object of the present invention is to provide an automatic return type circuit breaker having an integrated two-stage contact opening and closing structure.

According to the present invention configured as described above, an earth leakage state detecting unit including an earth leakage determining unit 111 that detects whether or not an overload occurs in the power supplied to the input side through the image current transformer 112 and determines whether or not an overload occurs in the detected signal. 110; The over-current passive leakage blocking unit 120 cuts off the primary side contact 122 through the operation of the first driving unit 121 by the input power supply by a signal applied from the earth leakage determining unit 111 of the earth leakage state detecting unit 110. Wow; It is installed on the input side to protect the circuit in the event of a voltage rise due to impulse or spark spikes up to several thousand volts or instantaneously exceeding the cycle generated from the normal AC voltage. A surge protector 130 bypassing the circuit; In order to determine whether a load is generated due to the amount of use of various electric devices using a common power source, a current transformer 142 is installed at an input side, and an electric leakage cutoff to determine whether or not a short circuit occurs in an electrical signal applied through the current transformer 142. A load state detection unit 140 including a / return control unit 141; When it is determined that a short circuit has occurred in the load state detecting unit 140, an electric signal is applied by the short circuit breaking / return control unit 141, and the second driving unit 151 is driven by the applied power, and the second driving unit ( 151 includes: a current leakage circuit 150 for shorting the secondary side contact 152 to cut off power; A ubiquitous communication unit 160 for receiving a control signal in a wired or wireless manner and interfacing the signal to the ground fault blocking / return control unit 141; Self-recovering type short circuit with integrated two-stage contact opening and closing structure, characterized in that it consists of a micro voltage generator 170 to check whether or not abnormality of the load in the ground fault interruption / return control unit to solve the cause of power interruption Provide a breaker.

Hereinafter, a self-recovering type earth leakage breaker having an integrated two-stage contact opening and closing structure according to the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is a block diagram showing the configuration of an automatic return type short-circuit vehicle short circuit having an integrated two-stage contact opening and closing structure according to the present invention, Figure 3 is a block diagram showing another embodiment of FIG.

As shown in FIGS. 2 and 3, the automatic return type circuit breaker 100 having an integrated two-stage contact opening / closing structure according to the present invention has a current transformer 112 (hereinafter, A ground fault detection unit 110 comprising a ground fault determination unit 111 that detects through a ZCT and determines whether or not a short circuit occurs in the detected signal, and a ground fault determination unit 111 of the ground fault detection unit 110. ) And the overcurrent passive leakage circuit breaker 120 which cuts off the primary side contact 122 through the operation of the first driver 121 by a signal applied from And a surge protector 130 which is installed at the input side to protect the circuit in the event of a voltage rise due to an impulse or spark rising up to several thousand volts at a moment or by a moment, when the non-sulfur current flows temporarily. , Normal A current transformer 142 (hereinafter referred to as 'CT') is installed at an input side to determine whether a load is generated by the amount of various electric devices using the power source, and a short circuit occurs in an electrical signal applied through the CT 142. If it is determined that a short circuit has occurred in the load state detection unit 140 and the load state detection unit 140 including the earth leakage blocking / return control unit 141 for determining whether or not there is an occurrence of an electrical signal, the earth leakage blocking / return control unit 141 Applying power, the second driving unit 151 is driven by the applied power, the second driving unit 151 is a current leakage unit 150 for shorting the secondary side contact 152 to cut off the power, The ubiquitous communication unit 160 interfaces the signal to the earth leakage blocking / return control unit 141 by receiving a control signal in a wired or wireless manner, and checks whether there is an abnormal load / absence in the earth leakage blocking / return control unit to solve the cause when the power is cut off. Smile It consists of a pressure-generating unit (170).

The first driver 121 of the over-current passive leakage breaker 120 is configured with any one of the first solenoid / fully electronic trip coil 121a for shorting the primary side contact 122 and requires manual switching when an overcurrent occurs. Cut off the power input when a short circuit occurs.

The second driving unit 151 of the ground fault interrupting unit 150 is configured of any one of the motor 151a or the second solenoid 151b to short-circuit the secondary side contact point 152 to cut off power when a short circuit occurs.

In addition, the ubiquitous communication unit 160 is configured as a port for bidirectional communication having a ubiquitous function to interface a signal to the ground fault interrupting control / control unit 141 by receiving a control signal by wire or wirelessly.

The micro voltage generator 170 generates a voltage of 30 volts (V) or less and applies power to the earth leakage blocking / return control unit 141 to solve the cause when the power is cut off.

The operation of the automatic return type earth leakage breaker having an integrated two-stage contact opening and closing structure according to the present invention configured as described above will be described.

The first solenoid / complete electronic trip coil detects an electrical signal by detecting the ground fault, a short circuit, an overcurrent, an overvoltage, or a simultaneous occurrence of a ground fault, a short circuit, an overcurrent, or an overvoltage through a manual current leakage circuit breaker 120 at the same time. (121).

The first driver of the overcurrent passive leakage breaker 120 determines whether an overcurrent, an overvoltage, or a short circuit requiring manual switching has occurred or simultaneously occurred by determining an electrical signal applied to the overcurrent passive leakage breaker 120. Apply power to (121).

The first driving part 121 configured as one of the first solenoid / fully electronic trip coil 121a is driven through an applied power source to block the first side contact 122 installed at the input side.

In addition, the load state detection unit 140 detects whether a load is generated by the amount of use of various electric devices using power through the CT 142 installed at the input side, and applies the detected electrical signal to the earth leakage blocking / return control unit 141. do.

In response to the signal applied to the ground fault blocking / return control unit 141, it is determined whether a ground fault occurs in the electrical devices using the power or a ground fault occurs in the wire applied through the output side.

If a short circuit occurs at the same time as a ground fault according to the use of an electric device, a ground fault in a wire for supplying power or at the same time, the ground fault interruption / return control unit 141 applies power to the ground fault breaker 150.

The second driving unit 151 composed of the motor 151a or the second solenoid 151b is driven by the power applied to the ground fault interrupting unit 150 to short-circuit the secondary side contact 152 to cut off the power supply. Prevent fires that may be caused by a short circuit.

In addition, the earth leakage blocking / return control unit 141 compares and determines whether the power is cut off or the load is abnormal by the control signal, and periodically returns a pulse by supplying a pulse.

The micro voltage generator 170 generates a voltage of 30V or less to check whether the cause of interruption has been eliminated, and checks whether there is an abnormality on the load side.

The necessary power for generating power in the micro voltage generator 170 is connected to receive the necessary power between the secondary side contact 152 and the CT 142.

The micro voltage generator 170 generates a periodic pulse signal at a voltage so that the secondary side contact 152 of the present invention can automatically return when the secondary side contact 152 is short-circuited due to a short circuit. A circuit is generated and applied to the ground fault blocking / return control unit 141, and the ground fault blocking / return control unit 141 analyzes and determines the applied signal.

When it is determined that no abnormality occurs on the load side by the applied pulse signal, the ground fault interrupting / ear control unit 141 applies an electrical signal to the ground fault breaking unit 150.

The electrical signal drives the second driver 151 including the motor 151a or the second solenoid 151b of the earth leakage breaker 150 to bring the short-circuit secondary contact 152 back into contact with the power supply to the output side. To be authorized.

In addition, the surge protector 130 is an overcurrent passive leakage blocking unit 120, an overcurrent state detecting unit 110, a load state detecting unit 140, and an earth leakage blocking unit 150 from an instantaneous or abnormal current generated by a lightning strike or a nearby power device. ) By bypassing the underground to protect the ubiquitous communication unit 160 and the electrical equipment connected to the output side.

When the abnormal current is eliminated, the power applied through the input side continues to be applied to the output side.

In addition, since the short circuit is performed by the motor 151a to short-circuit the second driving unit 151 to short-circuit the second side contact 152, malfunction of the electric shock is prevented, thereby preventing the power supply from being cut off.

When a meter reader or the like visits the customer in which the breaker of the present invention is installed, or the absentee is absent, the data can be checked through the ubiquitous communication unit 160 installed in the breaker from the outside.

When visiting the customer directly, by connecting a portable terminal such as a laptop, PDA, etc. to the ubiquitous communication unit 160 to check how much current leakage occurs in the current customer, and how much load conditions to determine whether a dangerous situation occurs You can judge.

And in the case of the absent consumer, the outside is connected to the ubiquitous communication unit 160 wirelessly through a portable terminal such as a laptop, PDA, and the like.

Check the current load status and the short circuit status while connecting wirelessly, and use the checked data to determine whether the current dangerous situation is occurring or if the dangerous situation may occur in the future.

Based on the data communicated via wired or wireless, it can be managed according to the present occurrence situation and future occurrence situation, that is, it can be classified as a consumer who can cause a fire due to a short circuit or an overload. .

The effect of the self-recovering type earth leakage breaker having an integrated two-stage contact opening and closing structure according to the present invention is provided to the output side because it detects and judges precisely and accurately the problems caused by ground fault, short circuit, over current, and ground fault. It is effective to supply power stably.

In addition, if the power is cut off due to ground fault, short circuit, or over current, the user will not be automatically restored. Therefore, the user can cope with the situation according to the cause of ground fault, short circuit, or over current. It can work.

If an overload or a short circuit occurs by performing a self-diagnosis, it is possible to cut off the power supply to prevent a fire from occurring in advance.

In addition, when the meter visitor visits the customer or is a missed customer, the outside of the customer can be connected to the ubiquitous communication unit to check the current state of the breaker and use the checked data to determine whether a fire may occur in the present or future. It works.

In addition, based on the data that is currently checked, it is possible to classify customers who may be issued by a fire in the future and focus on management, thereby preventing damages to property and lives caused by electricity.

In addition, since the secondary side contact is blocked through the motor by the instantaneous power supply, there is an effect of preventing malfunction due to the instantaneous power.

Claims (4)

An electrical leak state detecting unit (110) configured to detect whether or not an overload occurs in the power supplied to the input through the image current transformer (112) and determine whether or not an overload occurs in the detected signal; The over-current passive leakage blocking unit 120 cuts off the primary side contact 122 through the operation of the first driver 121 by the input side power supply by a signal applied from the ground fault determining unit 111 of the ground fault detecting unit 110. Wow; It is installed on the input side to protect the circuit in the event of a voltage rise due to impulse or spark spikes up to several thousand volts or instantaneously exceeding the cycle generated from the normal AC voltage. A surge protector 130 bypassing the circuit; In order to determine whether a load is generated due to the amount of use of various electric devices using a common power source, a current transformer 142 is installed at an input side, and an electric leakage cutoff to determine whether or not a short circuit occurs in an electrical signal applied through the current transformer 142. A load state detection unit 140 including a / return control unit 141; When it is determined that a short circuit has occurred in the load state detecting unit 140, an electric signal is applied by the short circuit breaking / return control unit 141, and the second driving unit 151 is driven by the applied power, and the second driving unit ( 151 includes: a current leakage circuit 150 for shorting the secondary side contact 152 to cut off power; A ubiquitous communication unit 160 for receiving a control signal in a wired or wireless manner and interfacing the signal to the ground fault blocking / return control unit 141; Self-recovering type short circuit with integrated two-stage contact opening and closing structure, characterized in that it consists of a micro voltage generator 170 to check whether or not abnormality of the load in the ground fault interruption / return control unit to solve the cause of power interruption breaker. The method of claim 1, The first driving unit 121 is an automatic return type circuit breaker having an integrated two-stage contact opening and closing structure, characterized in that it is composed of any one of the first solenoid / fully electronic trip coil (121a). The method of claim 1, The second driving unit 151 is composed of a motor (151a) or the second solenoid (151b) automatic return type earth leakage breaker having an integrated two-stage contact opening and closing structure, characterized in that to apply the power. The method of claim 1, Ubiquitous communication unit 160 is an automatic return type circuit breaker having an integrated two-stage contact opening and closing structure, characterized in that consisting of two-way communication port having a ubiquitous function that can be controlled by wired or wireless.

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