KR102433208B1 - Vacuum circuit breaker equipped with a function of realtime monitoring and the monitoring method - Google Patents

Abstract

The present invention relates to a main contact link unit that moves a movable contact unit up and down to contact or separate a fixed contact unit, a mirroring auxiliary link unit installed to perform the same link operation at the same timing as the main contact link unit, and the mirroring auxiliary link unit An auxiliary contact unit to which power is connected or cut according to a link operation, and a monitoring unit for checking a trip state or a closing state of the main contact unit in a power conduction state of the auxiliary contact unit, wherein the power connection or cutoff state of the auxiliary contact unit is the main contact unit It relates to a vacuum circuit breaker and a monitoring method, characterized in that it proceeds the same for the same time as the negative contact or separation state.

Description

VACUUM CIRCUIT BREAKER EQUIPPED WITH A FUNCTION OF REALTIME MONITORING AND THE MONITORING METHOD

The present invention relates to a vacuum circuit breaker, and more particularly, to a vacuum circuit breaker including a relay and having a real-time operation monitoring function.

In general, a circuit breaker is one of the electrical machines used as a tool to separate and maintain the connection, etc. of electrical circuits of electrical machine equipment such as power plants, substations, and buildings, and has sufficient insulation performance to block fault currents. is usefully used for Accordingly, such a circuit breaker is one of the essential and important electrical installations generally used in electrical supply circuit installations. Many types of circuit breakers are installed and operated in power facilities such as power plants and substations, and they are being developed into mechanical devices that continue from the past to the present and the future. The circuit breaker, which is an essential device in the power system, must be continuously maintained even after installation, and for maintenance, the operating characteristics of the circuit breaker must be diagnosed from various viewpoints.

Against this background, technology related to circuit breaker diagnosis equipment that provides convenience to circuit breaker operators and more accurate diagnosis results of circuit breaker operation characteristics has emerged.

A vacuum circuit breaker is a device that protects the circuit by opening and closing the circuit under normal load or blocking the fault current in case of a fault. and device protection devices. The vacuum circuit breaker has a vacuum interrupter therein, and the inside of the vacuum interrupter is in a vacuum state.

In the case of a conventional vacuum circuit breaker, the operating characteristics of the circuit breaker are monitored through a relay installed on the breaker side. The blocking operation characteristics will be evaluated.

However, such a conventional monitoring method makes the relay system equipped with various functions more complicated, and even from the breaker manufacturer's point of view, there is a problem that the circuit breaker operation characteristic monitoring function optimized for the characteristics of the circuit breaker manufactured by the manufacturer cannot be mounted on the circuit breaker. have.

Patent Literature 1. Korean Patent Registration No. 10-1415079 Patent Document 2. Korean Patent No. 10-1059771

An object of the present invention is to provide a vacuum circuit breaker capable of mounting a blocking operation characteristic monitoring function optimized for a vacuum circuit breaker manufactured by each manufacturer. At this time, the purpose of this is to provide a vacuum circuit breaker that can accurately monitor the breaking operation characteristics of the vacuum circuit breaker within the vacuum circuit breaker independently of the relay installed separately outside the vacuum circuit breaker (switchboard enclosure).

The main contact link unit that moves the movable contact unit up and down to contact or separate the fixed contact unit, the mirroring auxiliary link unit installed to perform the same link operation at the same timing as the main contact link unit, and the power according to the link operation of the mirroring auxiliary link unit Auxiliary contact part to be connected or cut off, and a monitoring part to check the trip status or closing status of the main contact part with the power supply state of the auxiliary contact part. It is a vacuum circuit breaker characterized in that it proceeds the same for the same time as the separation state.

According to the present invention, the tripped or closed state of the vacuum circuit breaker can be reliably identified by using the mirroring auxiliary link unit that has the same link structure as the main contact link unit of the vacuum circuit breaker and performs the same link driving mechanism at the same timing as the main contact link unit.

In addition, according to the present invention, since the main contact link portion and the mirroring auxiliary link portion are formed in the same shape, the tripping or closing state of the vacuum circuit breaker can be reliably grasped under the same actual conditions.

In addition, since the present invention diagnoses the trip or closing state of the vacuum circuit breaker in synchronization with the trip signal or closing signal of the vacuum circuit breaker, it is possible to simplify the design of the system by minimizing the data generated by such diagnosis, and by such diagnosis Power consumption can be minimized.

1 is a schematic diagram of a vacuum circuit breaker according to a preferred embodiment of the present invention. (Conductive state)
2 is a schematic diagram of a vacuum circuit breaker according to a preferred embodiment of the present invention. (Blocked state)
3 is a block diagram of a monitoring unit according to the present invention.
4 is a flowchart of a monitoring method of a vacuum circuit breaker according to the present invention.

In order to fully understand the present invention, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Embodiments of the present invention may be modified in various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. This embodiment is provided to more completely explain the present invention to those of ordinary skill in the art. Accordingly, the shape of elements in the drawings may be exaggerated to emphasize a clearer description. It should be noted that the same configuration in each drawing is sometimes illustrated with the same reference numerals. Detailed descriptions of well-known functions and configurations determined to unnecessarily obscure the gist of the present invention will be omitted.

The present invention is a main contact link unit 130 that moves the movable contact unit 120 up and down to contact or separate the fixed contact unit 110, and is installed to perform the same link operation at the same timing as the main contact link unit. The mirroring auxiliary link unit 200, the auxiliary contact unit 400 to which power is connected or cut according to the link operation of the mirroring auxiliary link unit, and the trip state or closing state of the main contact unit 100 in the power conduction state of the auxiliary contact unit It relates to a vacuum circuit breaker and a monitoring method, comprising a monitoring unit 500 for confirming, wherein the power connection or cut-off state of the auxiliary contact part proceeds the same for the same time as the contact or separation state of the main contact part. .

1 is a schematic view showing the configuration and fastening structure of a vacuum circuit breaker according to the present invention.

1 is a diagram of the conduction state of the vacuum circuit breaker according to the present invention, and FIG. 2 is a diagram of the interrupted state. Referring to FIGS. 1 and 2, it is helpful to understand the configuration and operating principle of the present invention.

The monitoring unit 500 is synchronized by a trip signal or a closing signal of a relay connected to the vacuum circuit breaker, which means that the auxiliary link unit and the mirroring auxiliary link unit, and the main contact unit and the auxiliary contact unit are synchronized with each other.

The main contact link unit 130 is a selected section among the driving mechanisms of the vacuum circuit breaker, and the main shaft 200 rotating by the driving mechanism is located between the main contact link unit and the mirroring auxiliary link unit 300 . , The main shaft includes a first rib 210 fastened to the main contact link part, and a second rib 220 fastened to the mirroring auxiliary link part, and is a rotation center axis of the first rib and the second rib.

The main contact link portion 130 includes a first link 131 connected to the first rib 210 and a second link 133 connected to the main contact portion 100, and the main contact portion is the It includes a movable contact part 120 and the fixed contact part 110 .

The mirroring auxiliary link unit 300 includes a first auxiliary link 310 connected to the second rib 220 and a second auxiliary link 330 connected to the auxiliary contact unit 400 , and the first The auxiliary link and the first link 131 have the same shape and material, and the second auxiliary link and the second link 133 have the same shape and material.

3 is a block diagram of a monitoring unit according to the present invention. Referring to FIG. 3 , the monitoring unit 500 is a synchronization unit 530 for detecting the state of the vacuum circuit breaker, according to a control command received from the relay. and a power control unit 520 for supplying or cutting off the power supply 510, a status monitoring unit 540 for monitoring whether the power is conducted, and an interface unit 550 for checking a result of the status monitoring unit, wherein the interface unit includes: It is linked to the main diagnosis unit 600, and the main diagnosis unit monitors any one or more of an opening time, an arc time, a cutoff time, a power state of the control circuit, and the life of the circuit breaker of the vibration breaker.

The auxiliary contact unit 400 includes a third auxiliary link 430 connected to the second auxiliary link 330 , a first power terminal 441 and a second power terminal 442 to which the power 510 is applied. , a contact member 420 that is in contact with or spaced apart from the first power terminal and the second power terminal, and an auxiliary contact shaft 410 that is a rotation center of the contact member and connects the third auxiliary link and the contact member, The contact member contacts the first power terminal and the second power terminal at the same time or is spaced apart at the same time through rotational movement.

In the monitoring method of the vacuum circuit breaker according to the present invention, a synchronization step (S10) in which the monitoring unit 500 is synchronized by a trip signal or a closing signal received from the relay (S10), the power supply state of the auxiliary contact unit 400 and a monitoring step (S20) of monitoring the state of the main contact unit 100 with a step, wherein the power connection or cutoff state of the auxiliary contact unit in the synchronization step proceeds the same for the same time as the contact or separation state of the main contact unit characterized by being

4 is a flowchart of a monitoring method of a vacuum circuit breaker according to the present invention. Referring to this, the monitoring method will be described in detail as follows.

The synchronization step (S10) is a main shaft rotation step (S11) in which the main shaft 200 is rotated by a driving mechanism, and the main contact part 100 and the auxiliary contact part 400 are driven by the main shaft rotation step. In the driving step, the main contact part and the auxiliary contact part perform the same driving mechanism at the same time, and the driving step is a main contact part driving step (S12) for driving the main contact part. and an auxiliary contact unit driving step (S13) for driving the unit, wherein the main contact unit driving step and the auxiliary contact unit driving step are performed simultaneously.

The main contact part driving step (S12) is a first moving step in which the first link 131 is moved by the rotation of the main shaft 200, and the second link 133 is moved by the movement of the first link. and a third moving step in which the main contact part 100 is contacted or spaced apart by the movement of the second link, and the third moving step is the vertical movement of the movable contact part 120. is executed

In addition, the auxiliary contact part driving step (S13) is a first auxiliary movement step in which the first auxiliary link 310 moves by the rotation of the main shaft 200, and a second auxiliary movement step by the movement of the first auxiliary link A second auxiliary movement step in which the link 330 moves, a third auxiliary movement step in which the auxiliary contact unit 400 is contacted or spaced apart by the movement of the second auxiliary link, wherein the third auxiliary movement step is It is performed by the rotational movement of the contact member 420 .

The monitoring (S20) step includes a main contact state detection step (S21) of detecting the state of the main contact unit, a control command receiving step (S22) of receiving a control command from the relay, providing the power according to the control command or It includes a power supply step of blocking (S23), and an auxiliary contact unit state checking step (S24) of confirming the power conduction state of the auxiliary contact unit.

The conduction state means a state in which the vacuum circuit breaker is closed (closed state) by a closing signal (closing signal), and the cut-off state is a state in which the vacuum circuit breaker is tripped by a trip signal ( blocked state).

Next, the general operation of the circuit breaker to which the present invention is applied will be briefly described as follows. When the circuit breaker control circuit receives a trip signal or a closing signal from the relay, the trip coil (or close coil) built into the circuit breaker is electrically excited, and at this time, the excited trip coil (or, The armature located inside the excited coil moves in the axial direction of the excited coil by the electromagnet force (in other words, “magnetic force”) generated by the closed coil. The operation of the circuit breaker driving mechanism is induced by the change of the circuit breaker operation supporting part (hook) by the rudder force of the armature moving in the axial direction, whereby the breaking operation (or closing operation) of the main contact is performed. . Here, the operation of the circuit breaker driving mechanism is performed by accumulated energy, in particular, elastic energy, and the accumulated elastic energy is opened when the rudder force of the armature opens the hook.

Referring to FIGS. 1 and 2 , the vacuum circuit breaker may include the main contact unit 100 and the main contact link unit 130 . The main contact part 100 may be a vacuum interrupter, and the inside of the main contact part 100 may maintain airtightness with the outside in a vacuum state. The fixed contact part 110 and the movable contact part 120 may be provided inside the main contact part 100 . The fixed contact unit 110 and the movable contact unit 120 may be connected to an external main power source. A fixed electrode may be provided on one side of the fixed contact unit 110 in the vacuum interrupter, and a movable electrode may be provided on one side of the movable contact unit 120 . The movable contact part 120 can move up and down by the driving mechanism of the vibration breaker, whereby the movable electrode is in contact with or spaced apart from the fixed electrode, whereby the vacuum circuit breaker is closed (closing) or It can be blocked (trip).

The main contact link unit 130 may refer to a final link located on the movable contact unit 120 side in the driving mechanism of the vacuum circuit breaker. The main contact link unit 130 may be operated by a driving mechanism part of the vacuum circuit breaker that starts driving by the above-described trip or closing signal through the main shaft 200 . The main shaft 200 may rotate by a driving mechanism part of the vacuum circuit breaker (not shown), and in this case, the first link 131 may move left and right by the rotational movement of the main shaft. The second link 133 is rotatably fixed by a link fixing shaft 132 , and one side is rotatably fixed to the first link 131 , and is rotatably fixed to the left and right movement of the first link 131 . rotational motion can be followed. The other side of the second link 133 is rotatably fixed to the movable contact part 120 , and the movable contact part 120 can move up and down according to the rotational movement of the second link 133 . .

Before the trip operation of the vacuum circuit breaker is described again with reference to FIG. 2 , the first link 131 is positioned as shown in FIG. 1 before the start of the trip operation of the vacuum circuit breaker. When the trip operation is started, the main shaft 200 rotates clockwise, and at this time, the first link 131 moves to the left, and when the first link 131 pulls the second link 133 to the left, , the second link 133 rotates clockwise with the link fixing shaft 132 as a central axis of rotation. Accordingly, while the movable contact part 120 moves downward, the vibration breaker is in a trip state.

When the vacuum circuit breaker input operation is described again with reference to FIG. 1 , when the input operation is started, the main shaft 200 rotates counterclockwise, and at this time, the first link 131 moves to the right, and the first When the link 131 pushes the second link 133 to the right, the second link 133 rotates counterclockwise with the link fixing shaft 132 as a center of rotation. Thereby, while the movable contact part 120 moves upward, the vibration breaker is in a closed state.

The first and second ribs 210 and 220 may be fixed to the main shaft 200 , and the first and second ribs may be integrally formed with the main shaft.

The first link 131 may be rotatably connected to the first rib 210 .

The mirroring auxiliary link unit 300 may be connected to the second rib 220 , and the mirroring auxiliary link unit 300 includes the first auxiliary link 310 , the auxiliary link fixing shaft 320 , and the first auxiliary link unit 300 . It may include two auxiliary links (330). One side of the first auxiliary link 310 may be rotatably fixed to the second rib 220 , and the other side may be rotatably fixed to the second auxiliary link 330 . The second rib 220 may be installed to rotate and linearly move at the same distance and at the same angle as the first link 131 when the vacuum circuit breaker is put in or tripped.

In addition, the second auxiliary link 330 may be installed to rotate at the same angle as the second link 133 during the input or trip operation of the vacuum circuit breaker.

For ease of design, the first link 131 and the first auxiliary link 310 may have the same shape, and the second link 133 and the second auxiliary link 330 may have the same shape and material. can be formed with

The first auxiliary link 310 may be rotatably fixed to one side of the second auxiliary link 330,

The third auxiliary link 430 may be fixed to the other side. The mirroring auxiliary link unit 300 provides a rotational movement at the same angle as the main contact link unit 130 at the end while rotating and linear motion according to the rotation of the main shaft 200 . And since the integrally formed first rib 210 and the second rib 220 simultaneously rotate by the main shaft 200 , the auxiliary contact unit 400 is at the same time as the main contact unit 100 . can be tripped and put into

The auxiliary contact unit 400 connects the auxiliary contact shaft 410 , the third auxiliary link 430 , the first power terminal 441 , the second power terminal 442 , and the contact member 420 . The contact member may include a first auxiliary contact 421 on one side and a second auxiliary contact 422 on the other side.

The auxiliary contact unit 400 corresponds to the main contact unit 100. The main contact unit 100 performs tripping and closing operations in a vertical motion, whereas the auxiliary contact unit 400 trips in a rotational motion. and closing operations are performed. When the auxiliary contact unit 400 is designed to perform tripping and closing operations in a vertical motion, the auxiliary contact unit 400 is located on the side of the mirroring auxiliary link unit 300, and the mirroring auxiliary link unit ( This is because the space occupied by the 300 ) and the auxiliary contact unit 400 is large.

The third auxiliary link 430 transmits the rotational movement of the second auxiliary link 320 to the auxiliary contact shaft (410).

Accordingly, the auxiliary contact shaft 410 rotates according to the rotation of the third auxiliary link 430, and at this time, the contact member fixed to the auxiliary contact shaft 410 rotates according to the rotation of the main shaft. , when the auxiliary contact shaft 410 rotates counterclockwise, the auxiliary contact portion trips, and when the auxiliary contact shaft 410 rotates clockwise, the auxiliary contact portion can be closed.

The monitoring unit 500 is synchronized with the trip and closing events of the vacuum circuit breaker while power is supplied to the first power terminal 441 and the second power terminal 442 and is synchronized with the main contact unit 100 . The tripped and closed state of the auxiliary contact unit 400 can be monitored.

Referring to FIG. 3 , the monitoring unit 500 may include the power supply 510 , the power control unit 520 , the synchronization unit 530 , the state monitoring unit 540 , and the interface unit 550 . can The power source 510 may be any one of direct current and alternating current, and may supply power to the first power terminal 441 and the second power terminal 442 . The power control unit 520 may supply and cut off the power according to a control command of the synchronization unit 530 .

The synchronization unit may receive a trip signal or a closing signal from the relay installed outside the vacuum circuit breaker and synchronize by the signal to trip or close the vacuum circuit breaker, and from the relay A trip and closing event of the vacuum circuit breaker may be sensed by receiving a control signal of the vacuum circuit breaker corresponding to a trip signal or an input signal of the vacuum circuit breaker. In addition, the synchronization unit 530 is a circuit for detecting a current or voltage on a line through which a corresponding signal is transmitted in order to receive a trip signal or an input signal from the relay, and a control signal of the vacuum circuit breaker corresponding thereto, or the like. It can be linked with a sensor.

When the synchronization unit 530 detects a trip and closing event of the vacuum circuit breaker, the power control unit 520 transmits a control command to the power control unit 520, and the power control unit 520, which receives the control command, receives the power supply according to the control command. A 510 is provided to the first power terminal 441 and the second power terminal 552 . The state monitoring unit 540 is electrically connected between the first power terminal 441 and the second power terminal 552 in a state in which the power is supplied to the first power terminal 441 and the second power terminal 552 . By determining whether or not is conducted, it is possible to detect whether the vacuum circuit breaker, that is, the main contact part 100 is tripped and put in. Whether or not there is conduction between the first power terminal 441 and the second power terminal 552 may be detected using a current sensor (current transformer) interlocking with the state monitoring unit 540 . And, the detection result may be provided to the main diagnosis unit 600 that is linked through the interface unit 550, and the main diagnosis unit 600 is a separate unit independent of the relay, It may be a unit for monitoring the overall state (eg, opening time, arc time, break time, power state of a control circuit, life of a circuit breaker, etc.) of the vacuum circuit breaker.

As described above, the present invention has the same link structure as the main contact link unit 130 of the vacuum circuit breaker and uses the mirroring auxiliary link unit 300 to perform the same link driving mechanism at the same timing to trip or close the vacuum circuit breaker. can be reliably grasped, and since the main contact link unit 130 and the mirroring auxiliary link unit 300 are formed of the same shape and material, it is possible to reliably grasp the trip or input state of the vacuum circuit breaker under the same actual conditions. can

1 and 2 are only one embodiment of the present invention, some sections of the vacuum circuit breaker driving mechanism are defined as the main contact link unit 130 according to the designer, and the same as the main contact link unit 130 If the tripping or closing state of the vacuum circuit breaker is diagnosed using the mirroring auxiliary link unit 300 of the form, it may fall within the scope of the present invention. At this time, the first rib 210 and the second rib 220 which are integral like the main shaft 200 are installed, and the main contact link part 130 and the mirroring auxiliary link part 300 are installed in each. Therefore, in consideration of these matters, the designer appropriately defines the section of the main contact link section 130 in the driving mechanism of the vacuum circuit breaker and the mirroring auxiliary link section 300 corresponding to the section at the boundary point of the section. ) is desirable to design. In addition, the manufacturing cost can be reduced by manufacturing the auxiliary contact unit 400 as a simple simulation model that can represent the trip or cut-off state of the main contact unit 100, and the auxiliary contact point inside the vacuum circuit breaker An installation space of the unit 400 and the mirroring auxiliary link unit 300 may be secured.

The embodiments of the present invention described above are merely exemplary, and those of ordinary skill in the art to which the present invention pertains will appreciate that various modifications and equivalent other embodiments are possible therefrom. Therefore, it will be well understood that the present invention is not limited to the forms recited in the above detailed description. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims. It is also to be understood that the present invention includes all modifications, equivalents and substitutions falling within the spirit and scope of the invention as defined by the appended claims.

100: main contact part
200: main shaft
300: mirroring auxiliary link unit
400: auxiliary contact part
500: monitoring unit
600: main diagnostic unit
110: fixed contact part
120: movable contact part
130: main contact link part
131: first link
132: link fixed shaft
133: second link
210: first rib
220: second rib
310: first auxiliary link
320: auxiliary link fixed axis
330: second auxiliary link
410: auxiliary contact axis
420: contact member
421: first auxiliary contact
422: second auxiliary contact
430: third auxiliary link
441: first power terminal
442: second power terminal
510: power
520: power control unit
530: synchronization unit
540: status monitoring unit
550: interface unit

Claims (17)

a main contact link part which moves the movable contact part up and down to contact or separate the fixed contact part;
a mirroring auxiliary link unit installed to perform the same link operation at the same timing as the main contact link unit;
Auxiliary contact part to which power is connected or cut off according to the link operation of the mirroring auxiliary link part:
a monitoring unit for confirming a trip state or a closing state of the main contact unit with the auxiliary contact unit power-on state; includes
The power connection or cut-off state of the auxiliary contact part is a vacuum circuit breaker, characterized in that it proceeds the same for the same time as the contact or separation state of the main contact part. According to claim 1,
The monitoring unit is a vacuum circuit breaker, characterized in that synchronized by a trip signal or a closing signal of a relay connected to the vacuum circuit breaker. According to claim 1,
The vacuum circuit breaker, characterized in that the main contact link part is a selected section of the driving mechanism of the vacuum circuit breaker. 4. The method of claim 3,
The main shaft rotating by the driving mechanism is
Vacuum circuit breaker, characterized in that it is located between the main contact link portion and the mirroring auxiliary link portion. 5. The method of claim 4,
The main axis is
a first rib coupled to the main contact link part;
a second rib coupled to the mirroring auxiliary link unit; includes
A vacuum circuit breaker, characterized in that it is the rotational center axis of the first and second ribs. 6. The method of claim 5,
The main contact link part
a first link connected to the first rib;
a second link connected to the main contact part; includes
The main contact portion vacuum circuit breaker, characterized in that it comprises the movable contact portion and the fixed contact portion. 7. The method of claim 6,
The mirroring auxiliary link unit
a first auxiliary link connected to the second rib;
a second auxiliary link connected to the auxiliary contact unit; includes
The first auxiliary link and the first link have the same shape and material, the second auxiliary link and the second link is a vacuum circuit breaker, characterized in that having the same shape and material. 3. The method of claim 2,
The monitoring unit
a synchronizer for detecting the state of the vacuum circuit breaker;
a power control unit for supplying or cutting off power according to a control command received from the relay;
a state monitoring unit for monitoring whether the power is on;
an interface unit for confirming a result of the state monitoring unit; A vacuum circuit breaker comprising a. 9. The method of claim 8,
The interface unit is a vacuum circuit breaker, characterized in that it is linked to the main diagnostic unit. 10. The method of claim 9,
The main diagnostic unit is
Vacuum circuit breaker, characterized in that for monitoring any one or more of the opening time of the vacuum circuit breaker, the arc time, the cut-off time, the power state of the control circuit, and the life of the circuit breaker. 8. The method of claim 7,
The auxiliary contact part
a third auxiliary link connected to the second auxiliary link;
a first power terminal to which the power is applied; and a second power terminal;
a contact member contacting or spaced apart from the first power terminal and the second power terminal;
an auxiliary contact shaft which is a rotation center of the contact member and connects the third auxiliary link and the contact member; includes
The contact member is a vacuum circuit breaker, characterized in that the first power terminal and the second power terminal are in contact with each other or are spaced apart at the same time through a rotational movement. The method for monitoring the vacuum circuit breaker according to any one of claims 1 to 11,
a synchronization step in which the monitoring unit is synchronized by the trip signal or the closing signal received from the relay;
a monitoring step of monitoring the state of the main contact unit in a power-on state of the auxiliary contact unit; includes
In the synchronization step, the power connection or cut-off state of the auxiliary contact unit is a monitoring method of a vacuum circuit breaker, characterized in that the same proceeds for the same time as the contact or separation state of the main contact unit. 13. The method of claim 12,
The synchronization step
a main shaft rotating step in which the main shaft is rotated by a driving mechanism;
a driving step of driving the main contact portion and the auxiliary contact portion by the main shaft rotation step; includes
In the driving step, the main contact part and the auxiliary contact part perform the same driving mechanism at the same time. 13. The method of claim 12,
The monitoring step is
a state of the main contact for detecting the state of the main contact;
a control command receiving step of receiving a control command from the relay;
a power supply step of providing or cutting off power according to the control command;
Auxiliary contact part state checking step of confirming the power conduction state of the auxiliary contact part; A monitoring method of a vacuum circuit breaker comprising a. 14. The method of claim 13,
The driving step is
a main contact unit driving step of driving the main contact unit;
an auxiliary contact unit driving step of driving the auxiliary contact unit; includes
The vacuum circuit breaker monitoring method, characterized in that the driving step of the main contact part and the driving step of the auxiliary contact part are performed simultaneously. 16. The method of claim 15,
The main contact part driving step is
a first moving step in which the first link is moved by the rotation of the main shaft;
a second moving step in which a second link is moved by the movement of the first link;
a third moving step in which the main contact portion is contacted or spaced apart by the movement of the second link; includes
The third moving step is a monitoring method of a vacuum circuit breaker, characterized in that the vertical movement of the movable contact part. 16. The method of claim 15,
The auxiliary contact part driving step is
A first auxiliary movement step of moving the first auxiliary link by the rotation of the main shaft;
a second auxiliary movement step in which a second auxiliary link is moved by the movement of the first auxiliary link;
a third auxiliary movement step in which the auxiliary contact part is contacted or spaced apart by the movement of the second auxiliary link; includes
The third auxiliary movement step is a monitoring method of a vacuum circuit breaker, characterized in that the rotational movement of the contact member.

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