KR20040096865A - Earth leakage breaker of automatic reclosed for electronic intelligence type used electromagnet - Google Patents

Abstract

PURPOSE: An automatic returning earth leakage breaker is provided to automatically return the breaker in case of electric leakage or short circuit by using an electromagnet. CONSTITUTION: An automatic returning earth leakage breaker comprises a solenoid unit mounted with a spring for providing elastic forces to a circular iron core; a load contact terminal including a movable contact terminal attached to the iron core of the solenoid unit and a stopper groove formed at the top surface of a lock switch; a solenoid switch unit attached to the top surface of the load contact terminal, and which automatically returns the breaker; a manual breaker switch unit having a rack and a pinion; a leakage test switch unit arranged in the manual switch of the breaker; a micro computer controller for controlling a mechanism by sensing leakage or short signals; and a main case(24) for accommodating components of the breaker.

Description

Electronic Intelligent Automatic Return Leakage Circuit Breaker using Electromagnet {EARTH LEAKAGE BREAKER OF AUTOMATIC RECLOSED FOR ELECTRONIC INTELLIGENCE TYPE USED ELECTROMAGNET}

The present invention relates to an electronic intelligent automatic return breaker, and more particularly, to an electromagnet which continuously maintains one of the on / off states of the load current until the next operating voltage is driven by the supply of the DC voltage. Solenoid] is an electronic self-recovering type earth leakage breaker.

Recently, various kinds of electronic switches have been developed due to the development of the semiconductor device field, and they have been widely used in the industrial fields.The products include high voltages [110 ~ 220V / Electronic switches that can switch loads around 20A].

However, these electronic switches must be supplied with power at all times to maintain one of the ON / OFF state continuously, so that the power supply can not play the role of the switch.

Because of this fact, electronic switches are always using current consumption and switching such as an earth leakage breaker that must maintain the last operated switching state [ON / OFF] even when the power is continuously supplied or the power supply is cut off. It is not suitable for the use of the device has a problem that is used in a limited field.

In addition, an electronic circuit breaker using such an electronic switching element and an electromagnet [solenoid] has been developed, but the method of the developed product is controlled to return electronically, and the probability of returning due to ambient influence [NOISE] or lightning strike This can lead to fatal safety accidents when the worker is exposed to high voltage and high current due to breaker malfunctions during operation.

In order to solve the above problems, an intelligent electromagnet breaker using the electromagnet of the present invention has been made.

Intelligent electromagnet breaker using an electromagnet; Two electromagnets (solenoids) are used for the closing operation and the breaking operation at the same time. In this case, the interruption operation is prioritized, and even if the closing operation is continued, the load current is safely cut off so that the current is not injected again. The latch [iron core] of the lock [open / close] switch is inserted into the groove so that the state of ON / OFF operation can be maintained regardless of whether the power is turned on or off. It is designed to attempt automatic return by releasing the latch [iron core].

It would be more desirable to configure the remote communication port on the breaker with such a function so that the remote control is possible by checking the [ON / OFF] state of the breaker in the control room.

Also, if the circuit is cut off due to short circuit or short circuit, it is possible to judge whether it is released and to automatically return the circuit breaker, and to design and operate the circuit breaker when the circuit breaker is shut off by forced force. However, it is an object of the present invention to provide an electronic circuit breaker that prevents the manual mechanism from operating unless the electronic circuit breaker attempts to return according to the surrounding situation [NOISE] even if it is manually disconnected. .

1 is an internal configuration of the electronic intelligent circuit breaker according to the present invention.

2 is an external view of an electronic intelligent circuit breaker according to the present invention.

3 is an operation of the electronic intelligent circuit breaker according to the present invention.

Figure 4 is a circuit diagram of an electronic intelligent circuit breaker according to the present invention.

5 is a flow chart of the operation of the electronic intelligent circuit breaker according to the present invention.

Explanation of symbols on the main parts of the drawings

1: manual switch gear 2: slide

3: jungle spring 4: pinion [PINION]

5: rack [RACK] 6: latch spring

7: Movable contact terminal 8: Fixed contact terminal

9: contact terminal spring 10: automatic return latch [iron core]

11: Contact terminal electromagnet iron core 12: Automatic return electromagnet

13: Load test switch 14: Contact terminal drive electromagnet

15: Sensor [ZCT] 16: ON / OFF display window

17: Power input terminal 18: Power load terminal

19: Input power fixing screw 20: Output power fixing screw

21: Manual switch stopper plate 22: Batch latching groove

23: Manual switch knob 24: Body case

In order to achieve the above object, the electronic intelligent automatic return circuit breaker using an electromagnet [solenoid] of the present invention, two electromagnets [coils wound several times in a spiral shape of a wire in a cylindrical insulator] and an automatic return electromagnet switch, In the intelligent intelligent circuit breaker, which consists of a manual return and disconnect switch, two contact [open / close] parts and one test switch part, a spring that gives elasticity to a circular iron core having a certain thickness is provided at a coil center part wound several times in a cylindrical shape. Mounted electromagnet [solenoid] portion; A load contact terminal portion which is attached to an iron core of the electromagnet [solenoid] portion and comprises a movable contact terminal for opening or closing an electric power [load] by a force of up and down reciprocating motion and a latch [iron core] locking groove on an upper surface of the lock [open / close] switch; An auto return electromagnet [solenoid] switch unit attached to an upper surface of the load contact terminal unit to automatically return an electromagnet intelligent breaker; To have the function of a manual leakage circuit breaker, a rack [RACK] in the form of one linear toothed gear, a pinion [PINION] in the form of a gear of one cylindrical toothed, and a manual circuit breaker switch part in which several teeth are formed ; An earth leakage test switch unit formed on a passive switch of an electronic circuit breaker; A microcomputer control unit which senses a short circuit or a short signal to control the mechanism mechanism; It includes a main body case part 24 of the intelligent electronic circuit breaker for fixing the structures.

Circuit breakers are divided into electric devices that connect and disconnect electric circuits, and currents flowing through electric circuits are divided into fault currents flowing when a load current, a short circuit, or a ground fault occurs. The fault current is so large compared to the load current that it is difficult to interrupt. Therefore, the breaker is designed to cut off the fault current as well as the load current, and the breaker is distinguished from the breaker as the load switch that can cut only a small current as much as the load current. The power system consists of several devices such as generators, transformers, and transmission lines.

If you want to stop part of the load current, you should isolate the load current from the input power by breaking the current of the input wire with a breaker in the building or place you want to stop. If it is left as it is, damage of the damaged part is increased and the remaining part may be broken by a large current, so it is necessary to cut off the broken part as soon as possible.

Currently, earth leakage breaker is widely used in industrial equipment, home, industrial field, road traffic field.

With reference to the drawings will be described in detail through an embodiment of the electronic automatic return type circuit breaker using the present invention electromagnet [solenoid].

1 is a diagram showing the internal configuration of an electronic intelligent circuit breaker according to the present invention is configured by mixing the manual return method and the electronic automatic return type breaker method.

The principle of the first manual return circuit breaker will be described in detail.

The actuating component of the manual return method includes a manual open / close switch (23) having several teeth, a sliding plate (2) equipped with two springs (3) for applying a force in a predetermined direction, and a gear of cylindrical teeth. A pinion (4), a rack (RACK) (5) geared in a straight tooth shape, a spring (9) for applying a force in a direction to the electromagnet (solenoid) return switch (10) and the movable contact terminal (7). It consists of). When the manual breaker switch 23 is pushed up from the bottom to the top by applying human force when the breaker is manually restored, the pinion [4] is rotated in the reverse direction by the gear formed in the switch, and then the rack [RACK] (5). ) Move the gear formed in the same forward direction as the moving direction of the manual switch to secure the space for the on / off switch unit equipped with the movable contact terminal (7) and simultaneously switch the automatic return switch and automatically return Kinetic energy is generated by the elastic spring (9) which pulls the latch (lock) (10) by the electromagnet (solenoid) (12) and pushes the movable contact terminal portion. Is a principle of returning the power of the input wire 17 to the load power 18 so as to be able to be transferred, and a lock device that prevents the manual switching switch, which was once manually returned, from rotating backward. Because over a rotation center point (1) is capable of maintaining the returning state by the kinetic energy exerts a force in a predetermined direction of advance plate (2).

The principle of the circuit breaker of the second manual shut-off method will be described in detail.

When the circuit breaker is manually shut off, when the manual open / close switch 23 is pushed down from the upper side by applying human force, a cylindrical pomace is formed by the force pushing in the predetermined direction of the spring board 2 on which the elastic spring 3 is mounted. The manual on / off switch 23 is rotated. The pinion gear 4 is rotated in the reverse direction by the rotation of the manual switch 23, and the gear 5 formed in the rack is moved in the same forward direction as the moving direction of the manual switch. Pulling on and off the switch unit equipped with the contact terminal (7) is a movable distance between the fixed contact terminal 7 and the fixed contact terminal 8 is generated a constant distance, in order to maintain a constant distance, automatic return type electromagnet [Solenoid] of the solenoid (12) (10) is inserted into the locking groove (22) formed on the upper surface of the opening and closing switch on which the movable contact terminal (7) is mounted by elastic spring (6) force locked state Will be maintained.

Also, even if the automatic return electromagnet [solenoid] 12 is operated by any peripheral influence [NOISE], even if the latch [iron core] 10 of the latch is released, it is seated on the on / off switch equipped with the movable contact terminal 7. The pushing force of the elastic spring 3 seated on the sliding plate 2 is stronger than the pushing force of the elastic spring 9, so that it is maintained even when the lock is released.

The automatic return operation of the electronic return circuit breaker using an electromagnet [solenoid] is performed while the manual switch is turned on.

The electronic automatic return method using an electromagnet [solenoid] is designed to be operated separately from the mechanism of the manual open / close circuit breaker, so that the driving method is adopted to secure safety.

Hereinafter, with reference to the drawings will be described in more detail.

Automatic switching in case of short circuit or short circuit in the state that the manual switching device is turned on (with a space for freely reciprocating a certain distance freely regardless of the latch of the rack [RACK] with the movable contact terminal) The operation state to be blocked will be described.

The AC power source on the secondary side of the primary electromagnetic circuit breaker is overloaded when a short circuit or short circuit occurs, which is sensed by the sensing sensor jet city [ZCT] (15), and the electronic circuit receives a signal.The main electromagnet (solenoid) (14) It strongly pulls on and off the switch unit to which the movable contact terminal 7 is attached. At this time, the latch [iron core] 10 is inserted into the latch groove 22 formed on the upper surface of the open / close switch portion with the movable contact terminal 7 attached thereto to maintain the locked state [blocking]. will be.

When the secondary electronic circuit breaker is automatically shut off, the microcomputer control circuit tries to return automatically according to the delay time. The electromagnet [solenoid] switch 12 is equipped with a latch [lock] (10). Receive pull the latch [lock] (10) inserted into the latch groove (22). At this time, the inserted lock is released while pushing the on / off switch with the movable contact terminal attached by the force of the elastic spring 9 mounted on the main electromagnet [solenoid] 14, and the fixed contact terminal 8 and the movable contact terminal 7 ) Is in close contact with the input power (17) is a principle that is to transfer to the load power (18).

2 is a front view of an external view of an electronic intelligent circuit breaker according to the present invention, the ON / OFF display window for displaying the operation state of the electronic automatic return type circuit breaker using two AC input terminals, two load terminals, an electromagnet [solenoid] ( 16), manual open / close switch (23), operating state test switch (13).

When the electronic switch is cut off by operating the test switch, the mechanical mechanism and the electronic mechanism are simultaneously mixed and operated.

When the test switch 13 is driven while the manual breaker switch is in the ON position, the lock [clasp] 21 is pushed to the center of the manual switch by pressing the lock [clasp] 21 attached to the primary manual open / close switch. At the moment of departure from the rotary plate (2) by the force of the strong elastic spring (3) to rotate the manual switch. At this time, the pinion (PINION) (4) is rotated in the reverse direction to rotate the rack (RACK) (5), to pull the on-off switch with the movable contact terminal (7) attached to the elastic spring (22) 6) The clamp [lock] (10) is inserted to cut off the circuit breaker, and the AC switch power is forcibly shorted by the test switch (13) to detect the signal of the jet city [ZCT] (15). When the electronic circuit receives the main electromagnet (solenoid) 14 to drive the mechanism of the shut-off mechanism faster than the manual shut-off mechanism to see the ON / OFF movement, and check the breaker operation abnormality.

Figure 3 will be described in more detail through the understanding of the rotational direction of the gear and the state of the reciprocating movement of the movable contact terminal 7 according to the state of the ON / OFF operation road of the electronic intelligent circuit breaker according to the present invention.

When the handle of the manual return switch 23 of the circuit breaker is applied from the lower side to the upper side at the time of manual return of the electronic circuit breaker, the lock plate is held while pushing the slide plate 2 backward, and the manual return switch 23 is applied. The gear formed on the rotating shaft of the gear rotates in the left direction, and the gear of the rack [RACK] (5) gear that moves vertically by rotating the gear of the pinion (PINION) (4) reversely moves the contact terminal. The space in which (7) moves freely is created.

When the electronic breaker is manually cut off, when the handle of the manual breaker switch 23 of the breaker is applied from the upper side to the lower side, the lock [engagement] 21 held on the sliding plate 2 is the center point of the rotary shaft of the manual breaker switch ( At the moment of departure from 1), the gears of the gear formed on the rotary shaft of the manual shut-off switch are rotated to the right by two elastic springs 3 mounted on the slide plate 2, and the pinion (4) gear Rack (RACK) (5) which rotates the gears in reverse and rotates the gears of the gears to pull the body of the movable contact terminal part 7 so that the fixed contact terminal 8 and the movable contact terminal 7 are fixed. The input power 17 and the load power 18 are cut off at a distance.

4 is a circuit diagram of an electronic intelligent circuit breaker according to the present invention.

When the AC110 ~ 440V power generation fault occurs on the AC side of the load AC (short circuit, short circuit, overload), ZCT detects the fault and sends a signal to the ground fault detection circuit, and the ground fault detection circuit is connected to the electromagnet [solenoid]. It is a principle to cut off the load power by putting DC voltage to move the movable contact terminal away from the fixed contact terminal by a certain distance.

Blocked electronic circuit breaker sends a return signal to a small electromagnet [solenoid] when attempting automatic return by a woven program, releases the lock [batch] and contacts the movable contact terminal and the fixed contact terminal to check whether there is a short circuit or short circuit. .

In this case, when the short circuit or short circuit is not released, the main electromagnet (solenoid) connected to the movable contact terminal is activated by the ground fault detection circuit, and it is automatically shut off. When the short circuit or short circuit is released, the ground fault circuit does not operate. To stay intact.

5 is a flowchart illustrating an operation of returning the intelligent intelligent circuit breaker according to the present invention.

The microcomputer circuit on the S1-electronic breaker sends a signal to the small electromagnet [solenoid] switch to unlock.

S2- Earth leakage sensor ZCT determines whether the earth leakage circuit returns or breaks the operation breaker.

S3- If a short circuit or short circuit is released, the breaker will return to its state.

S4- When a short circuit or short circuit is not released, the electromagnet [solenoid] connected to the movable contact terminal is operated, and the fixed core and the movable contact terminal are fixed by the force of the electromagnet [solenoid]. Break the circuit breaker again by spaced apart.

As described above, the present invention operates an electromagnet [solenoid] switch in response to a weak electric signal of a low voltage and low current of a control circuit to switch [switch] a large capacity power of a high voltage large current [110 to 440 V / 10 to 250 A]. It solves the problems of the previous manual reset type breaker and the electronic breaker, and the intelligent automatic return breaker using the electromagnet which should keep the ON / OFF state of the switching terminal continuously even when the power supply is cut off. In addition, it can be applied to various industrial fields requiring safety, and thus it is possible to obtain an effect of preventing disasters and disasters in advance.

On the other hand, the intelligent electronic self-recovery circuit breaker using the electromagnet of the present invention is installed in a special area such as a mobile communication base station, a transmission tower, or an isolated area facility that is not inhabited, and attempts to return for a predetermined time, thereby causing the breaker to be released. In case of return, it solves the problem without additional personnel, and it is equipped with a remote communication network port in the electronic breaker so that it can be controlled by communication by checking the state [ON / OFF] of the breaker in the control situation room. You will be able to import

In addition, when the breaker is cut off in a general home or restaurant during subjec- tion, power must be turned on at all times, such as a refrigerator, to maintain freshness. There is an economic effect to do this.

Claims (3)

Two electromagnets (coils wound several times in a spiral form on a cylindrical insulator), an automatic return electromagnet switch, a manual return and disconnect switch, two sets of contacts [movable contact terminals], a rack with a constant tooth, and In the pinion [PINION], an intelligent automatic return electronic circuit breaker using an electromagnet composed of one load test switch unit, A spring-loaded electromagnet [solenoid] portion provided in the inner case of the electromagnetic breaker main body to give elasticity to a circular iron core having a predetermined thickness in a coil center portion wound with a plurality of cylindrical wires; A load contact terminal portion which is attached to an iron core of the electromagnet [solenoid] portion and comprises a movable contact terminal for opening or closing an electric power [load] by a force of up and down reciprocating motion and a latch [iron core] locking groove on an upper surface of the lock [open / close] switch; An auto return electromagnet [solenoid] switch unit attached to an upper surface of the load contact terminal unit to automatically return an electromagnet intelligent breaker; In order to have the function of a manual leakage circuit breaker, the rack [RACK] in the form of one linear toothed gear and one cylindrical toothed gear A passive circuit breaker switch unit in which a pinion and a plurality of teeth are formed; An earth leakage test switch unit formed on a passive switch of an electronic circuit breaker; A microcomputer control unit which senses a short circuit or a short signal to control the mechanism mechanism; Intelligent automatic return electronic circuit breaker using an electromagnet [solenoid], characterized in that it comprises a main body case portion of the intelligent electronic circuit breaker for fixing the structures. 'As defined in claim 1, Intelligent automatic return electronic circuit breaker using the electromagnet [solenoid], Passive on / off switch with gears and locking plate [lock] of a certain cheer, push plate with elastic spring to force the locking plate [lock] of manual switch Intelligent automatic return electronics using an electromagnet [solenoid] characterized by consisting of a rack [RACK] and a pinion [PINION] that allow the movable contact terminals to reciprocate in the direction [up / down movement of the manual switching switch]. breaker. The method of claim 1, Intelligent automatic return electronic circuit breaker using the electromagnet [solenoid] When using two electromagnets (solenoids), Load contact opening and closing, equipped with a movable contact terminal opening and closing switch which is operated by combining the cylindrical iron core of the electromagnet [solenoid] and the elastic spring so that the movable contact terminal is mounted and the locking groove [iron core] can be inserted. Using an electromagnet [solenoid], an electromagnet [solenoid] characterized in that it is composed of a clamp [cylindrical iron core] to allow automatic return by the control of the microcomputer and an automatic return electromagnet [solenoid] equipped with an elastic spring. Intelligent automatic return electronic breaker.