KR20060122242A - Combined Power Switch - Google Patents

Abstract

The present invention relates to a complex power switching device, and to an uninterruptible power switching device for operating the electronic switching means to supply power to the load by receiving external incoming commercial power or emergency power, the external incoming first power source and the second power source An uninterruptible power switching device for operating an electronic switch means to supply power to the load at all times, the uninterruptible power switching device comprising: the first switch means integrally connected with a power saving type first electronic switch for inputting starting power to an electric motor and a flexible cable; ; A second opening / closing means integrally connected with a power-saving second electronic switch which turns on the star-delta connection power to the electric motor and a flexible cable; It characterized in that it comprises a case formed with a binding unit for slidingly coupling the first and second opening and closing means.

Description

Complex ATS and Electromagnetic switch

1 is a plan view of a hybrid power switching device according to the present invention,

FIG. 2 is a cross-sectional view taken from the direction A-A of FIG. 1;

3 is a cross-sectional view shown in the B-B direction of FIG.

4 is a cross-sectional view showing an electronic switching means according to the present invention,

5 is a cross-sectional view showing a power saving type electronic switching means according to the present invention;

6 is a perspective view of a power-saving electronic switchgear according to the present invention;

7 is a view showing the operation relationship between the fixed iron core, the fixed contact end, the moving iron core, the mobile contact end in Figure 6,

8 is a view showing an operation relationship between the moving iron core fixing portion and the conveying member in FIG.

9 is a circuit diagram of a hybrid power switching device according to the present invention.

<Description of Signs of Major Parts of Drawings>

Power Saver Electronic Switchgear ... 10 Moving Core Position Fixing ... 80

First and second opening and closing means ... 100a, 100b Movable contactor ... 101

Control lever ... 102 Control shaft ... 110

Connection bushing ... 112 Moving pin ... 116

Moving core ... 120 Trip coil ... 122

Moving core hole ... 124 Compression spring ... 128

Flexible Cable ... 130 First and Second External Power Source ... 132a, 132b

1st, 2nd power terminal ... 134a, 134b 1st, 2nd movable contact terminal ... 150a, 150b

Starting power terminal ... 152a Star-delta connection power terminal ... 152b

1st, 2nd load terminal ... 154a, 154b fastening part ... 160

Separator ... 190

Removable controller means ... 400 Microcomputer ... 410

Drive power supply unit ... 420 Feed state monitoring unit ... 430

Mode change section ... 440 Key input section ... 450

The present invention relates to a motor for accommodating three-phase power and a power switching device for supplying a general load while maintaining two uninterrupted powers of commercial power and emergency power drawn from the outside. More specifically, the present invention has a function of switching two power sources, and after two different power sources are connected to the load, one side power source and the load connection are disconnected to enable switching from one power source to the other power source to maintain an uninterruptible state at all times. It relates to a power switching device that can be.

In general, a power switching device for selectively applying two different power sources such as commercial power source and emergency power source or star connection power source and delta connection power source to a load has been developed and used in various forms according to its capacity or use.

In the conventional uninterruptible power switching switch for switching between commercial power and emergency power, when commercial power is switched from emergency power to emergency power, the commercial power is disconnected from the load terminal while the commercial power is connected to the load terminal. In the case of switching from an emergency power source to a commercial power source, it is used to maintain an uninterrupted state at all times in a reverse manner in the above manner.

In addition, the star (Y) -delta (△) starting electronic switch for applying the power of the star connection power supply and the delta connection power supply to the load is connected to the star connection of the motor at the start of the motor to obtain a starting current and torque of 1/3. It is a device that starts by reducing the level and switches to a delta connection after the start is completed. It is widely used in various industrial sites to protect peripheral devices and motors from overload.

As described above, an uninterruptible power switching device that performs a power switching role and a star (Y) -delta (△) starting electronic switch for applying power of a star connection power supply and a delta connection power supply to a load are provided and used as necessary. It is true.

Therefore, two different power supplies are alternatively applied to the load. However, various types of power switching devices having similar configurations depending on the use are required. There was a problem that the device occupies a large volume to construct.

In addition, there is a fear of incorrect wiring because the connection between the power supply switching device and the load must be performed through a somewhat complicated wiring, and there is a problem that the load may be damaged if the device malfunctions because the wiring is very likely to be damaged by external force. .

In addition, the conventional electronic switch has a problem such that the power consumption is continuously generated because the operation power is continuously applied to maintain the opening and closing of the power switch during operation.

The present invention was created to solve the above problems, the present invention is a star (Y) -delta for driving an electric motor accommodating three-phase power while maintaining two different power sources of commercial power and emergency power uninterrupted state (Triangle | delta) It is providing the integrated power switch which was integrated so that a power supply can be supplied to a starting electronic switch and a general power receiving load.

In addition, the present invention is to provide a composite power switching device that can continuously maintain the opening and closing of the electronic switch without additional power consumption.

Electronic opening and closing means for achieving the above object, in the electronic opening and closing means for operating the movable contact to supply external power to the external power terminal and supply power to the load terminal,

A movable iron core moving inside the coil by the excitation of the trip coil and a compression spring for returning the movable iron core;

A movable contact that interlocks with the movable iron core and rotates about an operation shaft;

A moving pin connected to an end of the movable contactor to move along the hole of the movable iron core and to control the movement of the movable contactor;

An operating lever connected to the movable contactor and integrally formed on the operation shaft to rotate by a moving distance of the movable iron core about the operation shaft;

A connection bush extending to the operation shaft of the operation lever and interlocking with the other movable contactor; And a flexible cable connected to the load terminal to supply power.

In the uninterruptible power supply switching device that operates the electronic switching means to supply power to the load at all times by receiving the external incoming first power source and the second power source,

The first opening and closing means integrally connected with a power saving type first electronic switch and a flexible cable to turn on the starting power to the electric motor;

A second opening / closing means integrally connected with a power-saving second electronic switch which turns on the star-delta connection power to the electric motor and a flexible cable;

It characterized in that it comprises a case formed with a binding unit for slidingly coupling the first and second opening and closing means.

In the composite power supply switching device according to the present invention,

The energy-saving electronic switchgear,

case;

At least one fixed iron core to which the coil 21 is wound as being fixed to the case;

A moving core installed in the case so as to be movable above the fixed iron core;

A return spring for elastically biasing the moving iron core upwardly;

A fixed contact end fixed to a predetermined portion of the case;

A mobile contact end interlocked with the moving iron core to selectively contact the fixed contact end;

A bar extending toward the bottom of the moving iron and having a first hook formed at an end thereof;

A conveying member having a conveying bar which is mounted on the case and is sunk downward;

And a second hook hooked to the first hook, and a moving iron core fixing part organically connected to the transfer bar such that the second hook is hooked to the first hook.

In the composite power switching device according to the present invention,

The moving core position fixing part includes a second hook coupled to the case around a hinge axis, an elastic member applying an elastic bias so that the second hook can be restored to an initial position, and the state coupled to the second hook. It characterized in that it comprises an interlocking bar connected to the transfer bar.

In the composite power supply switching device according to the present invention,

A removable controller means having a microcomputer for controlling the power opening and closing means;

The removable controller means,

By recognizing the connection state between the power switching unit

It is preferable to include a mode changer for changing the control state of the microcomputer to enable uninterruptible power supply switching and / or star-delta connection power switching of the motor.

Hereinafter, with reference to the accompanying drawings, a power-saving electronic switchgear according to the present invention.

Figure 6 is a perspective view of a power-saving electronic switch according to the present invention, Figure 7 is a view showing the operation relationship between the fixed core, the fixed contact end, the moving core, the mobile contact end in Figure 6, Figure 8 is in FIG. In this regard, it is a view showing an operation relationship between the moving core fixing portion and the conveying member.

As shown, the energy-saving electronic switch according to the present invention, the case 10, at least one fixed iron core 20 is wound around the coil 21 as being fixed to the case 10, and the case 10 inside In the movable iron core 30 is installed to be movable on the upper portion of the fixed iron core 20, the return spring 35 for elastically biasing the moving iron core 30 upward, and a fixed contact end fixed to the case 10 ( 40, a movable contact end 50 which is interlocked with the movable iron core 30 and selectively contacts the fixed contact end 40, and a first hook 61 at the end as extending downward of the movable iron core 30. Is formed on the bar 60, the transfer member 70 having a transfer bar 71 which is mounted on the case 10, and hung downwards, and the second hook 81 which is hooked on the first hook 61. And a moving core position fixing part 80 which is organically connected to the transfer bar 71 so that the second hook 81 is hooked on the first hook 61. It should.

Case 10 is to accommodate all the above-described configuration, the terminal (not shown) for connecting the fixed contact end and the mobile contact end is provided, these terminals are electrically connected to the automation equipment, industrial equipment, electrical appliances, etc. It acts as a switch terminal.

The fixed iron core 20 and the moving iron core 30 have a general shape, and the coil 21 is wound around the fixed iron core 20. The fixed iron core 20 becomes an electromagnet when the current is applied to the coil 21 and sucks the moving iron core 30.

One end of the return spring 35 supports a predetermined portion of the moving core 30, and the other end is supported by a predetermined portion of the case 10. The return spring 35 applies an upward elastic bias to the moving core 30.

The fixed contact end 40 is fixed to a predetermined portion of the case 10, and a contact 40a is formed at the end thereof.

The movable contact end 50 is selectively contacted with the fixed contact end 40 while being moved by the moving iron core 30. For this purpose, a coupling structure between the movable contact end 50 and the movable iron core 30 can be realized in various ways. In this embodiment, the movable contact end 50 is formed in the through hole 31 formed on the movable iron core 30. The structure is provided so that it may be penetrated, and the spring 32 which elastically biases the moving contact end 50 to the through-hole 31 is interposed. By this structure, when the moving core 30 moves downward, the spring 32 interposed in the through hole 31 also moves downward, and the spring 32 moves the moving contact end 50 downward. The contact 50a of the movable contact end 50 is brought into contact with the contact 30a of the fixed contact end 40.

The bar 60 moves together with the movable contact end 50 by being installed below the movable contact end 50, and a first hook 61 is formed at the end thereof.

The moving core position fixing part 80 includes a second hook 81 coupled to the case 10 about the hinge axis h, and an elastic bias so that the second hook 81 can be restored to an initial position. The applying member includes an elastic member 82 and an interlocking bar 83 connected to the transfer bar 71 while being axially coupled to the second hook 81.

On the other hand, in order to manually operate the energy-saving electronic switch of the present application, the pressing portion 33 formed at the end of the moving core 30 may protrude to the upper portion of the case 10. In this case, when the user presses the pressing part 33, the movable contact end 50 moves together, and the terminal 50a of the movable contact end 50 is in contact with the terminal 40a of the fixed contact end 40 and energized. It becomes a state. This structure is useful when there is a power failure or an electrical problem occurs.

Next, the operation of the energy-saving electronic switchgear having the above structure will be described.

When the user applies a current to the coil 21 of the fixed iron core 20, the fixed iron core 20 becomes an electromagnet, thereby sucking the moving core 30. Then, the moving iron core 30 moves downward while also moving the spring 32 interposed in the through hole 31 downward, and the spring 32 moves the moving contact end 50 downward. The contact 50a of 50 is brought into contact with the contact 40a of the fixed contact end 40. Accordingly, the fixed contact end 40 and the mobile contact end 50 are energized. Then, the return spring 35 by the moving iron core 30 is maintained in a compressed state.

On the other hand, as the moving core 30 moves downward, the bar 60 on which the first hook 61 is formed is moved downward, and thus the first hook 61 is hooked on the second hook 81. Then, the moving core 30 does not rise again and maintains its position, even if the current is not supplied to the coil 21 wound on the fixed core 20, the movable contact end 50 and the fixed contact end 40. Maintains contact with each other. That is, the current is not consumed in keeping the mobile contact end 50 and the fixed contact end 40 in contact with each other.

Since the return spring 35 is in a compressed state when the moving core 30 completely descends downward, the return spring 35 elastically biases the moving core 30 upward. In this state, when the user releases power to the solenoid employed as the transfer member 70 as an example, the transfer bar 71 of the steel moves downward by the elastic force of the internal elastic member by the release of the magnetic field formed by the organic electromotive force. The lower end of the linkage bar 83 while elastically descending, and thus, the linkage bar 83 is rotated about the hinge axis h so that the second hook 81 deviates from the first hook 61.

In this case, the first hook 61 is separated from the second hook 81, and the return spring 35 applies an elastic bias to move the moving core 30 to the upper side, whereby the moving core 30 is Return to the initial state.

Hereinafter, a hybrid power switching device employing the power switching unit will be described in detail with reference to the accompanying drawings.

1 is a plan view of a hybrid power supply switching device according to the present invention, Figure 2 is a cross-sectional view shown in the direction A-A of Figure 1, Figure 3 is a cross-sectional view shown in the direction BB of Figure 1, Figure 5 according to the present invention 9 is a cross-sectional view showing a power-saving electronic switchgear, and FIG. 9 is a circuit diagram of a complex power switching device according to the present invention.

1 and 2, the hybrid power switching device of the present invention employing the power switch means is connected to the first power-saving electronic switch (10a) and the flexible cable 130 for inputting the starting power to the electric motor A first opening and closing means 100a integrally formed with a second opening and closing means 100b connected to the electric power switch 10b for supplying a star-delta connection power to the electric motor and the flexible cable 130, The first and second opening and closing means (100a, 100b) is composed of a case formed with a binding unit 160 for sliding coupling.

The first opening and closing means 100a is connected to a first power terminal 132a connected to a first external power source on one side, and to a starting power terminal 152a of the first power-saving electronic switch 10a by a flexible cable 130. The second load terminal 154b of the second opening and closing means 100b is grounded to the first power supply terminal 134a.

The first power-saving electronic switch 10a is a starting power terminal 152a connected to the first power supply terminal 134a by a flexible cable 130, and a first load terminal 154a connected to a periodic driving terminal of the motor. And the first movable contact terminal 150a connected to the solenoid type moving core 30 at the bottom to form a current conduction path between the starting power terminal 152a and the first load terminal 154a. When the electric power is supplied to the electric motor, it is composed of a moving core position fixing portion 80 to maintain the power applied state.

The second opening and closing means 100b is connected to the second external power source 220b on one side thereof and is connected to the star-delta connection power terminal 152b of the second power saving type electronic switch 10b by a flexible cable 130. The power supply terminal 132b and the first load terminal 154a of the first opening / closing means 100a are grounded with the second load terminal 154b.

The second power-saving electronic switch 10b is connected to the star-delta connection power terminal 152b connected to the second power terminal 132b by a flexible cable 130 and an auxiliary terminal 200b of the motor. A second movable contact connected to the solenoid movable core 30 at the bottom to form a current conduction path between the two load terminals 154b and the star-delta connection power supply terminal 152b and the second load terminal 154b. Pre-set time after the operation of the moving core position fixing unit 80 and the first power-saving electronic switch l to maintain the power-on state when the external power is supplied to the electric motor 200 at the stage 150b. After the elapse of time, the timer is configured to start the first power-saving electronic switch 10b.

The timer serves to drive the second power-saving electronic switch 10b when a predetermined time elapses after the operation of the first power-saving electronic switch 10a to drive a three-phase electric motor.

As described above, when the first and second movable contact ends 150a and 150b are connected to the moving core 30 and apply power to the coil 21 wound around the fixed core 20, the movable peak core is caused by magnetic induction. The first and second movable contact ends 150a and 150b are brought into contact with the respective fixed terminals by being moved by an electromagnetic force, and the first and second electric furnaces are input by the microcomputer 410. Since the operation of the two movable contact terminals (150a, 150b) is made, it is possible to energize the high voltage power through the low voltage electricity, the user can prevent various safety accidents, such as electric shock that can be generated by the high voltage electricity.

The moving core position fixing part 80 is adapted to maintain the contact state when the power contact of the first and second power-saving switchgear switches 10a and 10b is in contact with the moving core 30 when it is lowered. The hook or the locking member for fixing the moving contact is operated by the following microcomputer 410.

That is, when the moving core 30 of the first and second power-saving electronic switchgear 10a, 10b is lowered, it is temporarily cut off by driving of the moving core position fixing part in order to save electricity that is continuously required to maintain the state. The operation of the first and second typical electronic switchgear 10a, 10b is maintained.

On the other hand, in order to manually operate the energy-saving electronic switch (10a, 10b) of the present application, the pressing portion 33 formed at the end of the moving core 30 may protrude to the upper portion of the case 162. In this case, when the user presses the pressing part 33, the moving contact moves together, and the moving contact comes into an energized state while contacting the fixed contact. This structure is useful when there is a power failure or an electrical problem occurs.

In addition, a separator plate 190 is provided between the power terminals of the 1 to 3 phases to separate adjacent terminals.

The binding unit 160 is configured to be slidably coupled to the first opening and closing means 100a and the second opening and closing means 100b on the outside of the case of the first opening and closing means 100a and the second opening and closing means 100b.

This can be easily separated through the detachable means so as to be detachable between the first opening and closing means 100a and the second opening and closing means 100b and used as the breaker by the first opening and closing means 100a or the second opening and closing means 100b alone. Or the arrangement of the hybrid power supply switching device of the present invention is configured horizontally or vertically.

Removable controller means 400 is composed of a microcomputer 410, a drive power supply unit 420, a power supply state detection unit 430, a mode change unit 440, a key input unit 450.

The microcomputer 410 outputs a control signal to perform a control role required for the operation of the hybrid power switching device.

The power supply state detecting unit 430 serves to provide status information to the microcomputer 410 by monitoring the power supply state conducted on the power terminal of the power switching unit.

The driving power supply unit 420 supplies a movable power for turning on / off the power contacts of the power switching unit according to the control signal of the microcomputer 410.

The key input unit 450 serves to receive status information, additional control signals, and control information required for operation.

The mode changing unit 440 recognizes the connection state between the power switching units or the power supply state information recorded by the power supply state monitoring unit 430 and the control input signal of the key input unit 450 to switch the uninterruptible power supply and / or the motor. It serves to change the control state of the microcomputer 410 to enable power switching for star-delta connection.

Referring to the operation of supplying power to the load in the composite power switching device of the above structure as follows.

First, the first power supply 220a is supplied to the first power supply terminal 132a of the first opening and closing means 100a, and the main power supply terminal 200a of the load is connected to the first power supply terminal 134a. The second power supply 220a is supplied to the second power supply terminal 132b of the second opening and closing means 100b, and the main power supply terminal 200a of the load is also commonly connected to the second power supply terminal 134b. The power supply state detection unit 430 of the removable controller means 400 detects a power supply state to the first power supply terminal 132a, the second power supply terminal 132b, and the first and second power supply terminals 134b. 410 provides sensing information.

Next, when power is supplied to the load, the microcomputer 410 determines whether the current opening / closing means 100a and the second opening / closing means 100b are open or closed according to the detection information of the power supply state detecting unit 430. The driving power is supplied to the first opening / closing means 100a or the second opening / closing means 100b through the driving power supply 420 to control on / off.

At this time, when the first power supply 220a is supplied to the first power supply terminal 132a, the first opening / closing means 100a is turned on regardless of whether the second power supply is supplied or not supplied to the second power supply terminal 132b. The first power supply is supplied to the load, and the second opening and closing means 100b is turned off to prevent the second power supply 220b from being energized.

In addition, when the first power source 220a is not supplied to the first power terminal 132a, when the second power source 220b is supplied to the second power terminal 132b, the first opening / closing means 100a is turned off ( off) to prevent the first opening and closing means 100a from being energized, and the second opening and closing means 100b is turned on to energize the second power supply 220b so that power is supplied to the load.

Through the above process, it is possible to continuously supply power to the load to stably supply power supplied to the load even in the event of power failure.

Referring to the operation of supplying power to the three-phase electric motor in the composite power switching device of the above structure as follows.

First, the first power supply 220a is supplied to the first power supply terminal 132a of the first opening and closing means 100a, and the starting power supply terminal of the first power saving type electronic switch 10a is supplied to the first power supply terminal 134a. 152a is connected to the flexible cable 130, the second power supply 220b is fed to the second power supply terminal 132b of the second opening and closing means 100b of the present invention, and the second power supply terminal 134b. ), The start power terminal 152a of the first power-saving electronic switch 10a is connected in common, and the star connection terminal and the delta-connection terminal of the second power-saving electronic switch 10b are connected to each other. The main synchronous terminal of the electric motor is connected to the star-delta connection power supply terminal 152b of the two-switched electronic switch 10b and the load terminal of the first power-switched electronic switch 10a.

At this time, the star connection terminal 172 is placed in the ground state when the second movable contact terminal 150b of the second power-saving electronic switch 10b is turned off, and thus the sub-terminal terminal 200b of the motor 200 is connected to the star connection terminal 172. Power will not be supplied.

Subsequently, the first power terminal 132a, the second power terminal 132b, the first and second power supply terminals 134a and 134cb, the start power terminal 152a, the star delta power terminal 152b, and the first The power supply state sensing unit 430 of the detachable controller means 400 provides the sensing information to the microcomputer 410 by sensing the power supply state supplied to the two load terminal images 154a and 154b.

Next, the microcomputer 410 determines the open / closed state of the first opening / closing means 100a and the second opening / closing means 100b according to the sensing information of the power supply state detecting unit 430. The driving power is supplied to the first opening and closing means 100a or the second opening and closing means 100b to control on / off.

At this time, when the first power supply 220a is supplied to the first power supply terminal 132a, the first opening / closing means 100a is turned on regardless of whether the second power supply 220b is supplied to the second power supply terminal 132b. (on) to supply the first power supply 220a to the starting power supply terminal 152a of the first power-saving electronic switch 10a, and the second opening and closing means 100b is turned off to turn off the second power supply 220b. Should not be energized.

In addition, when the first power supply 220a is not supplied to the first power supply terminal 132a, when the second power supply 220b is supplied to the second power supply terminal 134b, the first opening and closing means 100a is turned off. (off) to prevent energization of the first opening / closing means (100a), and turning on the second opening / closing means (100b) to energize the second power source (220b) to activate the first power saving type electronic switch (10a). Ensure power is supplied to the terminals.

Subsequently, when power is supplied to the electric motor 200, the power supply state of the first load terminal 154a of the first power-saving electronic switch 10a and the second load terminal 154b of the second power-saving electronic switch 10b. The microcomputer 410 determines the open / closed state of the first power saving electronic switch 10a or the second power saving electronic switch 10b according to the detection information of the power supply state detecting unit 430. The driving power is supplied to the first power saving electronic switch 10a or the second power saving electronic switch 10b to control on / off.

At this time, when supplying starting power (power applied when the three-phase motor is first started) to the motor, the microcomputer 410 applies driving power to the first opening / closing means 100a through the driving power supply 420. By turning on, the starting power is supplied to the motor through the first power-saving electronic switch 10a.

Subsequently, after the first power-saving electronic switchgear 10a is energized, the timer of the second power-saving electronic switchgear 10b measures the operation time and turns on the second power-saving electronic switchgear 10b after a predetermined time elapses. By supplying power to the sub power terminal of the motor, the delta connection power is supplied to increase the operation speed of the motor.

In addition, when the first power-saving electronic switchgear 10a and the second power-saving electronic switchgear 10b are in an on state, the first and second power-saving electronic switchgears 10a and 10b do not need to be continuously supplied with power. The moving iron core position fixing unit 80 is operated so that the state is maintained, and the moving core position fixing unit 80 is controlled by the microcomputer 410 when the state is released.

In addition, the first opening and closing means (100a) and the second opening and closing means (100b) of the case outside the binding portion 160 that can be coupled sliding the first opening and closing means (100a) and the second opening and closing means (100b) is formed Easily separated by a detachable means to be detachable if necessary, using the first opening and closing means (100a) or the second opening and closing means (100b) alone as a circuit breaker or by configuring the arrangement of the combined power supply switching device of the present invention horizontally or vertically It is possible to use.

As described above, according to the hybrid power switching device of the present invention, a power contact and / or a general power receiving load for driving an electric motor that accommodates three-phase power while uninterrupting two different power sources of commercial power and emergency power. It is integrated to enable the power supply, and the power contact and the power switching device are provided as in the prior art, and the installation cost is excessively consumed, and the device does not occupy a large volume in order to form a complicated wiring. .

In addition, there is a risk of incorrect wiring because the connection between the power switching device and the load must be performed through a somewhat complicated wiring, and there is a high possibility that such wiring is damaged by an external force. there was.

Unlike the related art, it is not necessary to continuously supply the operating power during the opening and closing operation of the electronic switch, which can drastically reduce the current consumption and greatly reduce the overheating caused by the vibration noise and constant current conduction. Will have a very good effect.

Although the present invention has been described with reference to one embodiment shown in the drawings, which are illustrative, it should be understood by those skilled in the art that various modifications and equivalent other embodiments are possible.

Claims (5)

In the electronic switching means for operating the movable contactor to supply external power to the external power terminal and supply power to the load terminal, A movable iron core moving inside the coil by the excitation of the trip coil and a compression spring for returning the movable iron core; A movable contact that interlocks with the movable iron core and rotates about an operation shaft; A moving pin connected to an end of the movable contactor to move along the hole of the movable iron core and to control the movement of the movable contactor; An operating lever connected to the movable contactor and integrally formed on the operation shaft to rotate by a moving distance of the movable iron core about the operation shaft; A connection bush extending to the operation shaft of the operation lever and interlocking with the other movable contactor; And a flexible cable connected to the load terminal to supply power. In the uninterruptible power supply switching device for operating the electronic switching means to supply power to the load at all times by receiving the external incoming first power and the second power, A first opening / closing means according to claim 1, which is connected and configured by a power saving type first electronic switch and a flexible cable to supply starting power to the motor; A second opening / closing means according to claim 1, which is connected to the power-saving second electronic switch which turns on the star-delta connection power to the motor and is connected to the flexible cable; And a casing formed with a binding part for slidingly coupling the first and second opening and closing means. The method according to claim 1 and 2, The energy-saving electronic switchgear, case; At least one fixed iron core to which the coil is wound as being fixed to the case; A moving core installed in the case so as to be movable above the fixed iron core; A return spring for elastically biasing the moving iron core upwardly; A fixed contact end fixed to a predetermined portion of the case; A mobile contact end interlocked with the moving iron core to selectively contact the fixed contact end; A bar extending toward the bottom of the moving iron and having a first hook formed at an end thereof; A conveying member having a conveying bar which is mounted on the case and is sunk downward; And a moving hook position fixing part having a second hook on the first hook and organically connected to the transfer bar such that the second hook is hooked on the first hook. The method of claim 3, wherein The moving core position fixing part, A second hook coupled to the case around a hinge axis, an elastic member applying an elastic bias so that the second hook can be restored to an initial position, and connected to the transfer bar in an axially coupled state with the second hook; Combined power switching device comprising an interlocking bar. The method according to claim 2 to 4, The removable controller means, By recognizing the connection state between the power switching unit And a mode changer for changing the control state of the microcomputer to enable uninterruptible power supply switching or star-delta connection power supply of the motor.

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