WO2018207957A1

WO2018207957A1 - N-phase closed transition transfer switch

Info

Publication number: WO2018207957A1
Application number: PCT/KR2017/004862
Authority: WO
Inventors: 문성환
Original assignee: 오성기전주식회사
Priority date: 2017-05-11
Filing date: 2017-05-11
Publication date: 2018-11-15
Also published as: KR102264782B1; KR20190133049A

Abstract

The present invention relates to an N-phase closed transition transfer switch and, more particularly, to an N-phase closed transition transfer switch configured such that a transfer occurs while a neutral contact for normal power supply and a neutral contact for emergency power supply are overlapped, thereby protecting various kinds of electronic equipment on the load side more safely. To this end, there is provided an N-phase closed transition transfer switch comprising: a case having a load terminal installed thereon; a normal power supply terminal and an emergency power supply terminal installed on one side and on the other side of the case, respectively, such that the same can contact the load terminal; and a closed transfer means for transferring the normal power supply terminal and the emergency power supply terminal to the load terminal one after the other in such a manner that the transfer occurs after the normal power supply terminal and the emergency power supply terminal both contact the load terminal lest a physical time lag should occur during the transfer time, wherein the closed transfer means comprises a pair of rotation means installed on one side and on the other side of the case, respectively, a plurality of linkers arranged to intersect with each other among the pair of rotating means, the normal power supply terminal, and the emergency power supply terminal, and a connector connecting end portions of the plurality of linkers to each other such that the plurality of linkers interwork with each other; and, as the linkers interwork with each other by means of rotation of the rotation means, the normal power supply terminal and the emergency power supply terminal both contact the load terminal or contact the load terminal one after the other.

Description

N-phase overlap changeover switch

The present invention relates to an N-phase overlap switching switch, and more particularly, the neutral contact (N phase contact) of the commercial power supply and the neutral contact (N phase contact) of the emergency power source to ensure stable operation of various equipment on the load side. The present invention relates to an N-phase overlap switching switch that can be transferred to each other after being overlapped.

The automatic power switch (ATS), also known as the emergency power switch, is composed of emergency power (generator or KEPCO reserve line power) in addition to the commercial power supplied by KEPCO. It is a device that automatically switches (converts) to emergency power when supply is not made.

In case of large-scale workplaces such as hospitals, factories, research institutes, broadcasting stations, etc., where there is a problem when the power supply is cut off, we have a generator to generate emergency power. ) Is used by installing automatic power switch to supply when there is a problem with commercial power.

As shown in FIG. 1, the automatic switching switch normally connects a commercial power supply 11 with a load 19 to supply power from the commercial power supply 11 to the load 19, and the commercial power supply. When an abnormality occurs in (11), the emergency power supply 12 and the load 19 are connected to supply power from the emergency power supply 12 to the load 19.

The automatic switching switch 13 includes a first fixed terminal 13-1 connected with a commercial power supply 11 that normally supplies power, a second fixed terminal 13-2 connected with an emergency power supply 12, and a load 19. Loads power from any one of the commercial power source 11 and the emergency power source 12 by connecting the third fixed terminal 13-3 and the first fixed terminal or the second fixed terminal and the third fixed terminal And a movable terminal 13-4 to be supplied to the 19) side.

Referring to the operation of the automatic switching switch, the automatic switching switch 13 is usually connected to the commercial power supply 11 to supply power to the load 19 side, if the abnormality of the commercial power supply 11 is detected commercial power ( 11) the connection between the load 19 and the load 19 is disconnected and the emergency power supply 12 and the load 19 are connected to supply power from the emergency power supply 12 to the load 19 side.

On the other hand, during the switching process, an arc is generated between the contacts of the fixed terminals 13-1 and 13-2 and the movable terminal 13-4 to maintain a current between the contacts, and then the arc is a current. It disappears at the zero point and becomes extinct.

At this time, the extinction time of the arc is about 10 ~ 12ms, various equipment on the load (19) side can be protected only 10 ~ 12ms after the neutral contact (N phase) than the other three contacts (R, S, T phase) have.

However, the above-described conventional general automatic switching switch may be insufficient to protect the equipment on the load side since the time difference between the neutral contact (N phase) and the other three contacts (R, S, T phase) is within 10 ms.

In particular, the automatic switching switch applied to the power generation equipment of broadcasting and telegraph telephone stations, military communication and radar facilities, banks and computer facilities, various electric furnaces, petrochemical plants, etc. If a physical time difference occurs, it may cause a problem that an instantaneous power failure may occur even though it is a short time. At this time, the phase of the voltage energized to the load 19 side and the emergency power supply 12 side at the time of power failure may be caused. When the phases of the voltages on the emergency power supply 12 side are different from each other when connected, there is a problem that an unexpected high voltage may be generated and damage to electronic equipment may occur.

In addition, the non-linear load raises the earth potential, which causes a potential difference between the earth and the neutral wire. When switching through the automatic switching switch, the neutral wire is separated from the load side and the reference potential is not established. There was a problem.

[Preceding technical literature]

[Patent Documents]

South Korea Registered Number 10-0984031

The present invention has been made to solve the above problems, the object of the present invention by overlapping the neutral contact of the commercial power supply and the emergency contact of the emergency power supply to each other, the various electronic equipment of the load side is protected and more stable operation It is to provide an N-phase overlap switching switch so that it can be.

In order to achieve the above object, the present invention provides a case in which a load terminal is installed; a commercial power terminal and an emergency power terminal respectively installed on one side and the other side of the case and provided to be in contact with the load terminal; Alternating switching means for alternately switching between the power terminal and the emergency power terminal, the switching is performed after the commercial power terminal and the emergency power terminal are both contacted to the load terminal so that no physical lag occurs in the transfer time. The overlap transfer means, a pair of rotation means respectively provided on one side and the other side of the case; a plurality of linkers disposed to cross each other between the pair of rotation means, the commercial power source terminal and the emergency power terminal; The plurality of linkers A connecting body connecting the ends of the linkers to each other so as to be interlocked with each other, wherein the linkers As such, to provide the N nested switching transfer switch, it characterized in that the commercial power supply terminal and the emergency power supply terminal so that the contact point or contact point alternately in both the load terminals.

In this case, the commercial power terminal and the emergency power terminal, respectively, the fixed terminal, and the movable terminal connected to the fixed terminal and rotated toward the load terminal, the contact terminal and separated from the load terminal, the linker, each rotating means A pair of linear linkers axially coupled to the ends, the linear linkers having straight holes formed therein; a pair of lifting linkers extending from the respective movable terminals and formed with curved long holes; It is preferable to link the linkers through the holes of.

At this time, one end of the connecting member includes a rotation shaft axially coupled to the case between the movable terminal, the other end of the connecting member is moved along the straight long hole and the curved long hole, and comprises a connecting shaft for connecting a plurality of linkers It is desirable to.

The N-phase overlap switching switch according to the present invention has the following effects.

First, in the process of switching between the commercial power source and the emergency power source, the commercial power source and the emergency power source are overlapped and connected to the load side at the neutral contact point (N phase) even after switching is performed at three contacts (R, S, T phases). Problems such as high voltage and malfunction in the connected electronic equipment can be prevented.

That is, in the process of switching between the commercial power supply and the emergency power supply, since there is no physical parallax of the switching time on the neutral contact point, unexpected high voltage and malfunction due to power failure or the like do not occur.

Accordingly, in the process of switching between the commercial power source and the emergency power source, the electronic equipment can be stably operated.

Second, by simplifying the switch structure for the overlap switching, there is an effect that can reduce the malfunction for the transfer and increase the convenience for maintenance.

1 is a view showing a circuit configuration of an automatic switching switch according to the prior art

Figure 2 is an exploded perspective view showing the main components of the N-phase overlapping switching switch in accordance with a preferred embodiment of the present invention

Figure 3a to Figure 3g is an operation diagram showing the operation of the N-phase overlapping switching switch in accordance with a preferred embodiment of the present invention.

The terms or words used in this specification and claims are not to be construed as limiting in their usual or dictionary meanings, and the inventors may properly define the concept of terms in order to best explain their invention in the best way possible. It should be interpreted as meaning and concept corresponding to the technical idea of the present invention.

Hereinafter, with reference to the accompanying Figure 2 will be described with respect to the N-phase overlap switching switch (hereinafter referred to as "switch switch") in accordance with a preferred embodiment of the present invention.

In the process of switching between the emergency power supply and the commercial power supply, the transfer switch is overlapped between the commercial power supply terminal and the emergency power terminal at the neutral contact (N phase) even after switching is performed at the three contact points (R, S, T phase). There is a technical feature that allows the transfer to occur.

That is, in the process of switching between the commercial power supply and the emergency power supply, the physical parallax of the switching is not generated.

Accordingly, it is possible to perform stable operation of sperm equipment without causing electronic equipment damage and malfunction due to unexpected high voltage generation.

As shown in FIG. 2, the transfer switch includes a case 100, a power supply terminal 200, and an overlapping switching means 300.

The case 100 configures the appearance of the transfer switch, and protects various components.

For convenience of description, in the present specification, a case 100 in which the inside is opened will be described.

At this time, the case 100 is preferably an insulating material.

Next, the power supply terminal 200 provides an increasing current between the commercial power source or the emergency power source and the electronic device on the load side, the load terminal 210, the commercial power supply terminal 220, and the emergency power supply terminal 230. It consists of.

The load terminal 210 is a terminal for supplying power to electronic equipment and is fixed to the case 100.

The load terminal 210 is preferably fixed to the lower case 100, as shown in the accompanying drawings.

In addition, the commercial power supply terminal 220 is a configuration in which a current flows from a supply source such as Korea Electric Power, which is always supplied with power, and for convenience of description, a terminal configured on the left side of the drawing (FIG. 3A) is referred to as a commercial power supply terminal 220.

The commercial power supply terminal 220 is composed of a fixed terminal 221 and a movable terminal 222.

The fixed terminal 221 is a portion connected to the commercial power source, is fixed to one side of the case 100.

The movable terminal 222 serves to energize or disconnect the current supplied from the fixed terminal 221 to the load terminal 210 and is connected to the fixed terminal 221.

At this time, the movable terminal 222 is rotatably coupled to one side of the fixed terminal 221.

That is, the movable terminal 222 is rotated about an axis at one side of the fixed terminal 221 to be in contact with the load terminal 210 or separated from the load terminal 210.

The movable terminal 222 is always in contact with the load terminal 210 at normal times, and in an emergency, the movable terminal 222 is rotated through the overlapping switching means 300 to be described later to be separated from the load terminal 210.

For convenience of description, in the present specification, the fixed terminal and the movable terminal constituting the commercial power supply terminal 220 are referred to as a first fixed terminal 221 and a first movable terminal 222.

The emergency power supply terminal 230 is a terminal to which power is supplied from the spare power in an emergency, and is installed at the other side of the case 100.

In this case, for convenience of description, the terminal configured on the right side of the drawing (FIG. 3A) is called an emergency power terminal.

The emergency power terminal 230 also includes a fixed terminal 231 and a movable terminal 232.

For convenience of description, in the present specification, the fixed terminal and the movable terminal constituting the emergency power terminal 230 are referred to as the second fixed terminal 231 and the second movable terminal 232.

The second fixing terminal 231 is a part connected to the emergency power source, and is fixed to the other side of the case 100.

The second movable terminal 232 serves to energize or disconnect the current supplied from the second fixed terminal 231 to the load terminal 210, and is connected to the second fixed terminal 231.

In this case, the second movable terminal 232 is rotatably coupled to one side of the second fixed terminal 231.

That is, the second movable terminal 232 is rotated about an axis at one side of the second fixed terminal 231 while being in contact with the load terminal 210 or separated from the load terminal 210.

The second movable terminal 232 is normally separated from the load terminal 210, and in an emergency, the second movable terminal 232 is rotated through the overlapping switching means 300, which will be described later, to be a contact to the load terminal 210.

Next, the overlapping switching means 300 is an intermediary means for switching between the commercial power supply terminal 220 and the emergency power supply terminal 230 as described above. The first movable terminal 222 and the second movable part are precisely performed. The terminal 232 is rotated so that both the first movable terminal 222 and the second movable terminal 232 are in contact with the load terminal 210, or the first movable terminal 222 and the second movable terminal 232. Alternately serve to make contact with the load terminal 210.

The overlap transfer means 300 includes a rotation means 310, a linker 320, and a connecting body 330.

Rotating means 310 is a means for generating power for operating the linker 320, is provided in a pair.

Rotating means 310 is axially coupled to one side and the other side of the case 100, respectively, may be rotated manually or may be configured to be automatically rotated through a control signal.

For convenience of description, the rotating means 310 provided on one side of the case 100 is referred to as a first rotating means 311, and the rotating means 310 provided on the other side of the case 100 is referred to as a second rotating means 312.

In addition, the linker 320 is connected between the rotating means 310 and the

movable terminals

222 and 232 and is an intermediary means for interlocking the rotating operation of the rotating means 310 to the

movable terminals

222 and 232.

That is, the linker 320 performs contact control with the load terminal 210 through the rotation of the

movable terminals

222 and 232 while performing a linear motion and a rotational motion through the rotation operation of the rotation means 310.

The linker 320 is composed of a straight linker 321 and the lifting linker 322.

The straight linker 321 is linked to the rotation operation of the rotation means 310, it is installed on each rotation means (310).

One end of each linear linker 321 is axially coupled to the end of the rotating means 310, the other end of each of the linear linker 321 is a straight long hole 323 in the longitudinal direction of the straight linker 321 (hereinafter referred to as' linear long hole) 'Is formed.

The linear linker 321 is to be pulled or pushed toward the rotation means 310 by the rotation of the rotation means 310.

For convenience of description, the straight linker 321 installed on the first rotating means 311 is referred to as a first straight linker 321a, and the straight linker 321 provided on the second rotating means 312 is a second straight linker 321b. Is called.

In addition, the straight long hole 323 formed in the first straight linker 321a is called the first straight long hole 323a, and the straight long hole 323 formed in the second straight linker 321b is called the second straight long hole 323b. do.

Meanwhile, the lifting linker 322 rotates the

movable terminals

222 and 232 while interlocking with the straight linker 321 by the rotation operation of the rotating means 310.

The lifting linker 322 extends from each of the

movable terminals

222 and 232, and one end thereof is fixed to the movable terminal.

For convenience of explanation, the lift linker 322 installed on the first movable terminal 222 is referred to as a first lift linker 322a, and the lift linker 322 extended to the second movable terminal 232 is a second lift linker ( 322b).

The elevating linker 322 is formed with a curved long hole 324 (hereinafter, referred to as a "curve long hole") in the longitudinal direction of the elevating linker 322.

The curved hole 324 is formed to be rounded with a predetermined curvature on the lifting linker 322.

At this time, the curved long hole 324 formed in the first lifting linker 322a is called the first curved hole 324a, and the curved long hole 324 formed in the second lifting linker 322b is called the second curved hole 324b. do.

At this time, the curvature of the curved long hole 324 is formed to be located at a point away from the radius of curvature of the rotation of the connector to be described later.

That is, the curved long hole 324 deviated from the curvature of the radius of rotation of the connector 330 to be described later, that is, to the curved hole 324 having a curvature having an eccentric center axis from the central axis of the connector 330 rotation radius To be formed, it is to be able to interlock the lifting linker 322 up and down when the connector 330 rotates.

Detailed description thereof will be described later.

Next, the connecting body 330 is an intermediary means for interlocking the straight linker 321 and the lifting linker 322 which cross each other through the rotation operation of the rotating means 310.

The connecting body 330 is installed between the first movable terminal 222 and the second movable terminal 232.

One end of the connector 330 is axially coupled to the case 100 through the rotation shaft 331, and the other end of the connector 330 is a straight long hole 323 and a curved long hole of the linkers 320 intersected with each other. It is coupled with the linkers 320 through the connecting shaft 332 passed through 324.

That is, the connector 330 having such a configuration is rotated about the rotation shaft 331, and the connection shaft 332 moves along the curved long hole 324 and the straight long hole 323, and the straight linker 321 and In response to the movement by interfering with the lifting linker 322, the

movable terminals

222 and 232 are rotated, and the contact and separation to the load terminal 210 can be made.

On the other hand, the support means 400 is preferably installed between the connecting shaft 332 and the case 100.

The support means 400 serves to elastically support the linkage of the linker 320, and is intended to allow the linker 320 to be flexible.

One end of the support means 400 is axially coupled between the pair of rotating means 310, and the other end of the support means 400 is connected to the connecting shaft 332.

At this time, the support means 400 is provided with a spring 410 that the elastic force acts toward both ends of the support means 400.

Hereinafter, the coupling and the action of the transfer switch having the above configuration will be described with reference to FIGS. 3A to 3G.

One end of the linear linker 321 and the lifting linker 322 is installed in each of the rotating means 310 and the

movable terminals

222 and 232, and the other end of the straight linker 321 and the lifting linker 322 is provided in the case 100. It is located in the middle of the intersection with each other.

On the other hand, the connecting shaft 332 of the connecting body 330 is inserted into the crossed straight hole 323 and the curved long hole 324 is in a state supporting each linker 320.

1) Commercial power contact status

The combined switching switch as described above is normally in a state in which contacts are provided to supply power from a commercial power source, as shown in FIG. 3A.

That is, the first movable terminal 222 is in contact with the load terminal 210, and the second movable terminal 232 is separated from the load terminal 210.

At this time, the connecting body 330 is inclined to the right side in the drawing, the support means 400 is a state in which it is elastically supported.

Accordingly, unless the rotating means 310 is arbitrarily rotated, the switching action by the connecting body 330 is not performed.

In addition, the connecting shaft 332 is positioned at the highest point of the first curved hole 324a of the first lifting linker 322a to support the first lifting linker 322a, and at the same time the first lifting linker 322b is made of the second lifting linker 322b. The state is located at the lowest point of the two curved long holes 324b.

In such a normal state, when a power failure is noticed from the commercial power supply side or an emergency situation occurs, a switching action from the commercial power supply to the emergency power is made through the transfer switch.

This switching action may be achieved by manually operating the rotating means 310, it is also possible for the rotating means 310 to be automatically rotated through an electrical signal to perform the switching action automatically.

To this end, the first rotating means 311 is rotated in the clockwise direction as shown in FIG. 3B.

At this time, the first linear linker 321a is moved to the left side in connection with the first rotation means 311.

At this time, the rotation range of the first rotating means 311, the first linear linker 321a is moved to the left in the drawing, the end of the first linear hole 323a is connected to the connecting shaft 332 of the connector 330 Until contact.

Accordingly, the connecting shaft 330 is not rotated.

2) Nested switching state

Thereafter, the first rotation means 311 continues to rotate, and in the case of manual rotation, the rotation of the first rotation means 311 is stopped by the stopper S formed at one side of the first rotation means 311.

At this time, the connecting shaft 332 is pulled by the first straight hole 323a, is rotated in the counterclockwise direction as shown in Figure 3c is in a state standing vertically.

At this time, due to the change in the position of the connecting shaft 332, the support force for the second lifting linker 322b is released as the connecting shaft 332 is moved, so that the second lifting linker 322b is lowered by its own weight.

Accordingly, the second movable terminal 232 is lowered together with the second lifting linker 322b to be in the state of being loaded on the load terminal 210.

As can be seen through this, both the commercial power supply terminal 220 and the emergency power supply terminal 230 are in contact with the load terminal 210 and are in a state of overlap switching.

3) Emergency power contact status

Next, the second rotating means 312 is rotated clockwise manually or automatically.

At this time, the second linear linker 321b is interlocked by the second rotation means 312 and moved to the left in the drawing, and the connecting shaft 332 of the connecting body 330 standing vertically is the second linear length hole 323b. ) And is moved to the left in the drawing as shown in FIG. 3D.

At this time, the support means 400 that was elastically supporting the connecting shaft 332 is rotated in the clockwise direction while the spring 410 is stretched as the critical point is crossed.

In addition, the connecting shaft 332 is moved along the first straight hole 323a and is moved to the lowest point along the first curved hole 324a.

As such, as the connecting shaft 332 moves to the lowest point on the first curved hole 323a, the first lifting linker 322a is raised, which is a central axis of the curvature of the first curved hole 324a. This is because it is comprised in the position which deviated from the rotation center axis of this connecting body 330. FIG.

Thereafter, as the first lift linker 322a rises, the first movable terminal 222 is lifted from the load terminal 210 and separated as shown in FIG. 3D.

Accordingly, the switching from the commercial power source to the emergency power source is made.

4) Return to commercial power supply

On the other hand, when the power supply environment of the commercial power is restored, it returns to the commercial power supply state from the above emergency power supply state.

To this end, the second rotating means 312 is rotated in the counterclockwise direction.

At this time, the second straight linker 321b is interlocked by the second rotating means 312 and is moved to the right in the drawing as shown in FIG. 3E.

At this time, the rotation range of the second rotating means 312, the second linear linker 321b is moved to the right in the drawing, the end of the second linear hole 323b is in contact with the connecting shaft 332 of the connector 330 It is until.

Accordingly, the rotation operation of the connecting body 330 is not made.

5) Overlap switching status

Next, the first rotating means 311 is rotated in the counterclockwise direction.

At this time, the first linear linker (321a) is interlocked by the first rotation means 311 is moved to the right in the drawing as shown in Figure 3f.

At this time, the connecting shaft 332 of the connecting body 330 also interferes with the end of the first straight hole 311, is moved to the right in the drawing.

At this time, the rotation range of the first rotating means 311 is up to the state that the connecting body 330 is standing vertically.

At this time, the support means 400 is rotated counterclockwise as the spring 410 is stretched to elastically support the vertical state of the connector 330.

On the other hand, since the connecting shaft 332 is moved to the highest point along the first curved hole 324a, the first lifting linker 322a is released from the bearing force by the connecting shaft 332 to move the connecting shaft 332 As much as it falls by own weight.

Accordingly, the first movable terminal 222 is also lowered to be a contact to the load terminal 210, the overlapping switching state in which both the commercial power supply terminal 220 and the emergency power terminal 230 is in contact with the load terminal 210 Becomes

6) Commercial power contact status

Subsequently, the first linear linker 321a is further moved to the right by interlocking with the continuous rotation of the first rotating means 311, and the connecting shaft 332 interferes with the end of the first straight hole 323a. It is moved to the right as shown in 3g.

At this time, the support means 400 also elastically supports the connecting shaft 332 after the spring 410 is stretched and rotated counterclockwise.

On the other hand, since the connecting shaft 332 is moved to the lowest point along the second curved hole 324b, the second lifting linker 322b is raised, which is the central axis of the curvature of the second curved hole 324b. It is because it is comprised in the position which deviated from the rotation center axis of this connecting body 330.

Thereafter, as the second lifting linker 322b rises, the second movable terminal 232 is lifted from the load terminal 210 and separated as shown in FIG. 3G.

Accordingly, the return from the emergency power source to the commercial power source is made.

As described above, the N-phase overlap switching switch according to the present invention has a technical feature of switching between the commercial power supply and the emergency power by overlapping the neutral contact of the commercial power supply and the neutral contact of the emergency power supply.

As a result, physical parallax does not occur on the neutral contact in the process of switching between the commercial power supply and the emergency power supply, thereby preventing the occurrence of high voltage due to the voltage phase difference between the load terminal side and the commercial power supply (emergency power supply) and preventing malfunction of the electronic equipment. Since it is possible to operate the electronic equipment can be made stable.

Although the present invention has been described in detail with respect to the embodiments described, it will be apparent to those skilled in the art that various modifications and variations are possible within the spirit of the present invention, and such modifications and variations are obviously belonging to the appended claims.

[Description of the code]

100: case 200: power supply terminal

210: Load terminal 220: Commercial power terminal

221: first fixed terminal 222: first movable terminal

230: emergency power terminal 231: second fixed terminal

232: second operation terminal 300: overlapping transfer means

310: rotation means 311: first rotation means

312: second rotation means 320: linker

321: straight linker 321a: first straight linker

321b: second straight linker 322: lifting linker

322a: first lifting linker 322b: second lifting linker

323: straight long hole 323a: first straight long hole

323b: 2nd straight line 324: curved line

324a: first curve mechanic 324b: second curve mechanic

330: Connector 331: Rotating shaft

332: connecting shaft 400: support means

410: spring S: stopper

Claims

A case in which a load terminal is installed;

Commercial power terminals and emergency power terminals respectively installed on one side and the other side of the case and installed to be in contact with the load terminal;

Alternating switching means for switching between the commercial power terminal and the emergency power terminal alternately to the load terminal, the switching after the commercial power terminal and the emergency power terminal is in contact with the load terminal so that no physical lag occurs in the transfer time: Including;

The overlap transfer means,

A pair of rotating means respectively installed on one side and the other side of the case;

A plurality of linkers disposed to cross each other between the pair of rotating means and a commercial power terminal and an emergency power terminal;

A linker connecting the ends of the linkers to each other such that the plurality of linkers cooperate with each other;

Linked by the linker by the rotation of the rotation means, the N-phase overlapping switching switch, characterized in that the commercial power terminal and the emergency power terminal is both in contact with the load terminal or alternately contact.
The method of claim 1,

The commercial power terminal and the emergency power terminal, respectively,

A fixed terminal and a movable terminal connected to the fixed terminal and contacted and separated from the load terminal while being rotated toward the load terminal,

The linker is,

A pair of linear linkers axially coupled to the respective ends of the rotating means, the linear long holes being formed;

A pair of lifting linkers extending from the respective movable terminals, each having a curved long hole;

The connector is N-phase overlap switching switch characterized in that the linkers are connected through a straight hole and a curved hole.
The method of claim 2,

One end of the connecting member includes a rotating shaft axially coupled to the case between the movable terminal, the other end of the connecting member is moved along the straight long hole and the curved long hole, and includes a connecting shaft for connecting a plurality of linkers N-phase overlap switching switch.