KR101345173B1 - Interlock apparatus for circuit breaker and switchgear - Google Patents

Interlock apparatus for circuit breaker and switchgear Download PDF

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Publication number
KR101345173B1
KR101345173B1 KR1020100047698A KR20100047698A KR101345173B1 KR 101345173 B1 KR101345173 B1 KR 101345173B1 KR 1020100047698 A KR1020100047698 A KR 1020100047698A KR 20100047698 A KR20100047698 A KR 20100047698A KR 101345173 B1 KR101345173 B1 KR 101345173B1
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South Korea
Prior art keywords
lever
main shaft
circuit breaker
switchboard
lever mechanism
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KR1020100047698A
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Korean (ko)
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KR20110128074A (en
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한신
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엘에스산전 주식회사
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Priority to KR1020100047698A priority Critical patent/KR101345173B1/en
Publication of KR20110128074A publication Critical patent/KR20110128074A/en
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Publication of KR101345173B1 publication Critical patent/KR101345173B1/en

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Abstract

An object of the present invention is to provide an interlocking device between a circuit breaker and a switchboard door that operates so as not to allow the switchboard door to be opened for electrical safety when the circuit breaker accommodated in the switchboard is in the closing position (coating position). ; A main shaft lever which is contracted at an end of the main shaft and rotates in the same direction as the main shaft rotates to the circuit open position or the circuit closing position; A first interlocking lever mechanism rotatable to a first position located when the main shaft is in the circuit open position or to a second position located when the main shaft is in the circuit closing position; A second interlock lever mechanism rotatable to a locked position that does not allow opening of the switchboard door in accordance with rotation of the main shaft to a circuit open position or to a circuit closed position and to a release position that allows opening of the switchboard door; Power transmission means for transmitting power by rotation of the first interlocking lever mechanism to the second interlocking lever mechanism; And a restraining plate that is restrained by the second interlocking lever mechanism in the locked position and released from the second interlocking lever mechanism to open the switchboard door in the unlocked position of the circuit breaker and the switchboard door. An interlock is disclosed.

Description

Interlocking device between circuit breaker and switchboard door {INTERLOCK APPARATUS FOR CIRCUIT BREAKER AND SWITCHGEAR}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to circuit breakers housed in switchboards, and more particularly, to an interlock of a circuit breaker and a switchboard door that operates so as not to allow opening of the switchboard door when the circuit breaker is in the closing position (constant position).

In the circuit breaker accommodated in the switchboard, when the circuit breaker is in the closing position (current conduction position), since a high voltage current flows on the circuit, an electrical safety accident such as electric shock may occur when the user opens the switchboard door. The present invention locks (restrains) the distribution panel door to not be opened when the circuit breaker is in the closing position (conducting position) in the circuit breaker housed in the switchboard, and allows the distribution panel door to be opened when the circuit breaker is in the circuit breaking position. The present invention relates to a safety device and an interlock of a circuit breaker and a distribution panel door.

In the interlocking device of the circuit breaker and the switchboard door accommodated in the switchboard as a prior art, the lock rod is installed in the switchboard enclosure to advance or retreat to the position to allow or disallow the opening of the switchboard door in conjunction with the main shaft of the circuit breaker, and the corresponding lock. An interlock device having a lock hole provided in a distribution panel door corresponding to a rod has been disclosed. However, the related art is not easy to change the installation position of the interlock device, there is a problem that can occur a lot of malfunction due to the incorrect installation position of the lock rod and the lock hole.

Accordingly, the present invention is to solve the problems of the prior art, the object of the present invention is easy to change the installation position in the interlocking device of the circuit breaker and the switchboard door accommodated in the switchboard, the operation reliability of locking and unlocking the switchboard door It is to provide an excellent interlock of the circuit breaker and the distribution panel door.

An object of the present invention, in the interlocking device of the circuit breaker and the distribution panel door,

A main shaft commonly connected to the plurality of movable contacts to simultaneously open and close the plurality of phase movable contacts in the circuit breaker;

A main shaft lever bearing at an end portion of the main shaft projecting to the outer surface of the circuit breaker and rotating in the same direction as the main shaft rotates to a circuit open position or a circuit closing position;

A first position provided on an outer surface of the circuit breaker and connected to the main shaft lever and interlocked with the rotation of the main shaft lever to be positioned when the main shaft is in the open circuit position or a second position when the main shaft is in the circuit closing position; A first interlock lever mechanism rotatable to a position;

A lock position which is provided on an inner wall surface of an enclosure of the switchboard and connected to the first interlocking lever mechanism and which does not allow opening of the switchboard door in accordance with rotation of the main shaft to a circuit open position or a circuit closing position, and opening of the switchboard door. A second interlock lever mechanism rotatable to an unlocked position to permit the locking mechanism;

Power transmission means for transmitting power by the rotation of the first interlocking lever mechanism to the second interlocking lever mechanism; And

A restraining plate fixed to the switchboard door, the restraining plate being restrained by the second linkage lever mechanism when in the locked position and released from the second linkage lever mechanism so as to open the switchboard door when in the unlocked position; It can be achieved by providing an interlock of the circuit breaker and the distribution panel door according to the present invention.

The interlocking device of the circuit breaker and the switchboard door according to the present invention is installed on a substrate on which the second linkage lever mechanism can be easily positioned and installed on the inner wall surface of the switchboard enclosure, and the restraint plate is also easily positioned and mounted among the switchboard doors. Since it is comprised by the plate which can be made, the effect of easy to change an installation position can be acquired.

Since the interlocking device of the circuit breaker and the switchboard door according to the present invention has a rotation locking or unlocking configuration by a lever and a restraining plate, the possibility of a malfunction is minimized in preparation for the locking or unlocking structure due to the linear movement of the locking hole and the lock rod. The effect can be obtained.

1 is a front view showing the configuration of the interlock device of the circuit breaker and the switchboard door according to an embodiment of the present invention,
FIG. 2 is a plan view of the first interlocking lever mechanism in FIG. 1;
3 is a partially enlarged view illustrating a connection configuration and operation of a main shaft lever and a first lever of an interlock device of a circuit breaker and a distribution panel door according to an embodiment of the present invention;
4 is a perspective view of a portion of FIG. 3;
5 is a partially enlarged view showing the configuration and operation of the second lever and the restraining plate among the interlocking devices of the circuit breaker and the distribution panel door according to the preferred embodiment of the present invention;
6 is a state diagram showing a state in which a circuit breaker is installed on the top of the switchboard in the switchboard in which the interlocking device of the circuit breaker and the switchboard door according to the present invention is installed.
7 is a state diagram showing a state in which the circuit breaker is installed in the lower portion of the switchboard in the switchboard is installed interlocking device of the circuit breaker and the switchboard door according to the present invention.

The object of the present invention and the constitution and effects of the present invention to achieve the same will be more clearly understood by the following description of the preferred embodiment of the present invention with reference to the accompanying drawings.

As the interlocking device of the circuit breaker and the distribution panel door according to the preferred embodiment of the present invention, as shown in FIG. 1, the main shaft 1, the main shaft lever 2, the first interlocking lever mechanism 10, and the second interlocking lever may be used. The mechanism 20, the power transmission means E, W1, W2, W3, and the restraining plate 30 are comprised.

In the circuit breaker CB such as the air circuit breaker as shown in FIGS. 6 and 7, for example, a plurality of commercially available movable contacts such as AC three phases, which are embedded in the circuit breaker CB and not shown, are simultaneously In order to open and close the drive, the main shaft 1 may refer to FIGS. 1 and 3 and may also be referred to as an open / close shaft as an axis commonly connected to a plurality of movable contacts.

The main shaft lever 2 is condensed at the end of the main shaft 1 projecting to the outer surface of the circuit breaker CB, and the same as the rotation of the main shaft 1 to the circuit open position or the circuit closing position. Rotate in the direction. Here, the plurality of movable contacts driven by the main shaft 1 when the main shaft 1 is rotated to the circuit open position are separated from the corresponding fixed contacts (built in the circuit breaker CB), and the circuit is opened to flow the current. Is cut off, and when the main shaft 1 is rotated to the circuit closing position, the plurality of movable contacts come into contact with the corresponding fixed contactor, thereby making the circuit closed and allowing current to flow from the power supply side through the circuit breaker CB to the load side. It becomes a state. 1 to 2 and 4, the spindle lever 2 transmits power according to the rotation of the spindle lever 2 to the first lever 3 of the first interlocking lever mechanism 10. The connecting protrusion 2a is provided. The connecting protrusion 2a may be installed by being screwed to the first lever 3 as a separate pin, as shown in the illustrated embodiment, and the connecting protrusion 2a may be a first lever according to another embodiment. It may be composed of a protrusion formed to protrude integrally with (3).

The first interlocking lever mechanism 10 is installed on the outer surface of the circuit breaker CB and is connected to the main shaft lever 2 so as to interlock with the rotation of the main shaft lever 2 so that the main shaft 1 is in the circuit open position. It is possible to rotate to the second position which is located when the first position or the main shaft 1 is the circuit closing position. The first interlocking lever mechanism includes a first substrate 7 and a first lever 3.

1 to 4, the first substrate 7 is fixedly installed at a position adjacent to the main shaft lever 2, and in FIG. 6 and FIG. 7, the installation position of the first substrate 7 is denoted by reference numerals. It is also the corresponding position of the outer surface of the circuit breaker CB indicated by 10 only. 1 to 2, the first substrate 7 is a member formed in a substantially “U” shape, both side plate portions which face each other at predetermined intervals as a rough rectangle, and both side plates. It may be composed of a metal material having a bottom surface portion connecting the lower portion of the portion or a synthetic resin material having an equivalent mechanical strength. The first substrate 7 has a substrate fixing screw mouth 8 into which the substrate fixing screw 9 can be inserted for installation of the outer surface of the circuit breaker CB.

The first lever 3 is rotatably supported by the first substrate 7 via a first rotational shaft 4 installed through the first substrate 7, the function of which is dependent on the rotation of the spindle lever 2. According to the power transmission to the power transmission means (E, W1, W2, W3). The first lever 3 is connected to the main shaft lever 2 so that the main shaft lever connecting portion 3a extends into the circuit breaker CB and passes through the enclosure of the circuit breaker CB in order to receive power. 3b and the rotation shaft support wall part 3c. The main shaft lever connecting portion 3a is parallel to the side of the enclosure of the circuit breaker CB and is bent at right angles from the first surface to pass through the enclosure of the circuit breaker CB. And a second surface portion extending from the second surface portion at right angles to the connection between the connecting protrusions 2a of the spindle lever 2. The rotary shaft support wall portion 3c is a vertical wall portion which is spaced apart from each other by a predetermined interval facing the first surface portion of the main shaft lever connecting portion 3a and supports the other end of the first rotary shaft 4. The bottom part 3b is a bottom part which connects the lower part of the main shaft lever connection part 3a and the rotating shaft support wall part 3c, and has a spring connection part 3b1 and a pair of power transmission means connection groove parts 3b2 and 3b3. do.

Each of the pair of power transmission means connecting grooves 3b2 and 3b3 is fitted with a wire end supporting pipe 6 as shown in FIG. 1.

The wire end support tube 6 has a small inner diameter and an outer diameter, and in particular, has an inner diameter large enough to allow the penetration of only the wire first end W1, and the outer diameter is fitted into the power transmission means connecting grooves 3b2 and 3b3. A tubular member having a lower portion and an upper diameter larger than the lower portion and having an inner diameter large enough to accommodate the wire return spring S2 and the distal head E as well as the wire first end W1. It is composed.

One end of the first return spring S1 is supported by the spring connector 3b1.

One end of the first return spring S1 is supported by a spring connector 3b1 of the bottom 3b of the first lever 3, and the other end of the first return spring S1 is the first substrate 7. And the first return spring S1 exerts an elastic force on the first lever 3 so that the first lever mechanism 10 is located in the first position when the main shaft 1 is in the circuit open position.

A supporting bolt 5 supports the lower surface of the first lever 3 at the lower part of the first lever 3, and the first lever 3 is supported by the supporting bolt () by the rotational force transmission from the spindle lever 2. It is supported by 5) and can seesaw about the first axis of rotation 4.

When the first lever 3 is seesawed as described above, the wire return spring S2 performs a function of keeping the relative position of the distal head E relative to the wire end support tube 6 constant. One end (upper end) of the wire return spring S2 is supported by the distal head E as shown in FIG. 1, and the other end (lower end) of the wire return spring S2 is a wire end support tube ( 6) is supported by the inner bottom surface.

Accordingly, in FIG. 1, when the free end of the main shaft lever 2 points to the lower left, the first end of the lever 3 moves as the seesaw as described above, and thus the end head of the wire end support tube 6 and the wire W1. (E) is raised and the end head of the wire end support tube 6 and the wire W1 as the first lever 3 is seesawed when the free end of the spindle lever 2 points to the upper left. Part E descends. When the terminal head E rises, the wire 1st end W1 and the wire W1 and the wire 2nd end W3 which are integrally connected with the terminal head E are attracted, and the head When the portion E is lowered, the wire first end W1, the wire W1 and the wire second end W3, which are integrally connected to the terminal head E, are pushed.

As can refer to FIG. 6 and FIG. 7, the second interlocking lever mechanism 20 is installed on the inner wall surface of the enclosure 40 of the switchboard SG, and is connected to the first interlocking lever mechanism 10 to form a main shaft. The rotation of the switchboard door 41 in the locked position and the release position that allows the switchboard door 41 to open is possible in accordance with the rotation to the circuit open position or the circuit closing position of (1). The second interlock lever mechanism 20 may be configured to include a second substrate 21 and a second lever 22.

As shown in FIGS. 6 and 7, the second substrate 21 is fixedly installed at a position adjacent to the switchboard door 41 on the inner wall surface of the enclosure 40 of the switchboard SG. As shown in FIG. 1, the second substrate 21 is fixed to the substrate at one side of the upper side and the lower side thereof to allow the fixing screw for the fixed installation to be inserted on the inner wall surface of the enclosure 40 of the switchboard SG. It has a screw tool 24.

The second lever 22 is rotatably supported on the second substrate 21 as can refer to FIG. 1 and in particular is connected to the power transmission means E, W1, W2, W3, in particular power transmission means. It has a connection part connected to the wire 2nd end part W3 among (E, W1, W2, W3), and can be rotated to a locked position or a release position. The second lever 22 is rotatably supported by the second rotating shaft 23 supported on the second substrate 21, and the second lever 22 includes the hook portion 22a, the spring connecting portion 22b, and the second lever 22. A power transmission means connection portion 22c.

As can be seen in FIG. 1, the hook portion 22a of the second lever 22 hangs on the restraining plate 30 and locks and restraints that prevent the opening of the switchboard door (see reference numeral 41 in FIGS. 6 and 7). It is a part that is separated from the plate 30 and is rotatable to a release position to allow the distribution panel door to be opened. The part is bent downward by extending in one direction from the center portion through which the second rotation shaft 23 penetrates.

As shown in FIG. 1, the spring connecting portion 22b of the second lever 22 is a portion extending upward from the center portion through which the second rotation shaft 23 penetrates, and has one end of the second return spring S3. A spring connection port is provided at the end to allow the hook to be engaged.

Referring to FIG. 1, the power transmission means connecting portion 22c of the second lever 22 extends downward from the center portion through which the second rotation shaft 23 penetrates. , W1, W2, and W3 each have a connector for connecting the end of the wire second end W3.

It is preferable to comprise the 2nd interlocking lever mechanism 20 further including 2nd return spring S3. The second return spring S3 has one end supported by the second lever 22 and the other end supported by the second substrate 21, so that the second linkage lever mechanism 20 is positioned in the release position. Impulse elastic force).

The power transmission means (E, W1, W2, W3) is a means for transmitting the power by the rotation of the first linkage lever mechanism 10 to the second linkage lever mechanism 20, the end head (E), the wire ( W1), a wire first end W2, and a wire second end W3. The power transmission means E, W1, W2, W3 can be regarded as composed of the wire W1, and the wire first end W2 and the wire second end W3 are the first interlocking lever in the wire W1. The end portion connected to the mechanism 10 side and the end portion connected to the second interlocking lever mechanism 20 are more specifically aliased portions. The distal head portion E is a large diameter separation prevention portion having a larger diameter than the small diameter portion in the wire end support tube 6 so as to prevent separation of the wire first end W2 from the wire end support tube 6.

 The first interlocking lever mechanism 10 to guide the connection of the first interlocking lever mechanism 10 side and the second interlocking lever mechanism 20 side of the wire W1 as the power transmission means E, W1, W2, W3. The first substrate 7 is provided with a first coupling C1, and the second substrate 21 of the second interlocking lever mechanism 20 is provided with a second coupling C2. The first coupling C1 and the second coupling C2 are formed of a hollow tubular member for guiding the penetration of the wire W1, and on the outer circumferential surface thereof, the first substrate 7 is formed. Or it is preferable to comprise so that the screw part for screw connection installation with the 2nd board | substrate 21 is formed. According to a preferred sealing example, a screw connection between the first coupling C1 and the second coupling C2 is formed on one surface (one side or the bottom surface) of the first substrate 7 and the second substrate 21. Nut members and threaded holes are provided for this purpose.

The restraining plate 30 is fixedly installed in the switchboard door 41 as can refer to FIG. 6 or 5, and restrained by the second lever 22 of the second interlocking lever mechanism 20 when in the locked position. And a means released from the second lever 22 of the second interlocking lever mechanism 20 so that the switchboard door 41 can be opened in the release position. As shown in FIG. 6 or 5, the restraining plate 30 includes a lower part fixedly installed to the switchboard door 41 by a screw welding method, and a front extension part which is bent forward from the lower part. It may be composed of a plate having a necessary mechanical strength, such as a metal plate, for example, including an upper extension extending upwardly bent from the front extension. The hook portion 22a of the second lever 22 of the second interlocking lever mechanism 20 is shown as a solid line in the space between the upper extension portion of the restraining plate 30 and the switchboard door 41. When rotated as mentioned above, the switchboard door 41 is caught by the hook part 22a of the 2nd lever 22 among the 2nd interlocking lever mechanisms 20, and opening is prohibited. When the hook portion 22a of the second lever 22 of the second interlocking lever mechanism 20 is rotated as shown by the double-dotted line in FIG. 5, the switchboard door 41 is the second interlocking lever mechanism 20. It is released from the hook portion 22a of the second lever 22, and the opening is allowed.

On the other hand, the operation of the interlocking device of the circuit breaker and the distribution panel door according to the preferred embodiment of the present invention configured as described above will be described with reference to FIGS.

First, as the circuit breaker operates in the closed state from the open (OFF) state, the operation of opening the distribution panel door is prohibited by the operation of the interlock device according to the preferred embodiment of the present invention.

As shown by the solid line of FIGS. 4 and 3, when the circuit breaker operates in the closed (also called closed) state from the open (OFF) state, the positions of the main shaft 1 and the main shaft lever 2 are determined by the positions of the main shaft lever 2. The free end rotates from a position indicating upward to a position rotated by a predetermined angle counterclockwise on the drawing.

As shown in FIG. 1, the counterclockwise rotation of the spindle lever 2 removes the first lever 3 connected to the connecting protrusion 2a of the spindle lever 2 through the coupling groove 3a1. 1 Rotate counterclockwise around the rotating shaft (4).

Therefore, the wire W1 is pulled as the wire end support pipe 6 located at the opposite end of the portion connected to the connecting protrusion 2a of the spindle lever 2 among the first levers 3 is pulled, thereby The wire second end portion W3 connected to the power transmission means connecting portion 22c of the second lever 22 is pulled to the right in W1.

Accordingly, the second lever 22 rotates counterclockwise around the second rotation shaft 23, and thus, the restraining plate 30 in which the hook portion 22a of the second lever 22 is fixed to the distribution panel door 41 is provided. As the motor rotates to the restraining position, the distribution panel door 41 is prohibited from opening.

Therefore, when the circuit breaker is energized on the circuit (closed state) as the closing position (insertion position), it is possible to prevent the occurrence of electric shock accidents due to the opening of the distribution panel door 41 by the user.

Next, as the circuit breaker operates from the closed state (ON) to the open state (ON), the operation of allowing the distribution panel door to be opened by the operation of the interlock device according to a preferred embodiment of the present invention will be described.

In Fig. 3, when the circuit breaker operates in the open (also referred to as open or OFF) state in the closed state (ON), the positions of the main shaft 1 and the main shaft lever 2 are free of the main shaft lever 2 shown by the dashed-dotted line. It rotates by a predetermined angle clockwise from the position where the end points downward, to the position shown by the solid line in FIG.

As shown in FIG. 1, the clockwise rotation of the spindle lever 2 is performed by connecting the first lever 3 connected with the connecting protrusion 2a of the spindle lever 2 to the first lever 3 through the connecting groove 3a1. Rotate clockwise about the rotation shaft (4).

Therefore, the wire W1 is pushed as the wire end support pipe 6 located at the opposite end of the portion connected to the connecting protrusion 2a of the main shaft lever 2 of the first lever 3 is lowered. The second end W3 of the wire W1 connected to the power transmission means connecting portion 22c of the second lever 22 is pushed to the left.

Accordingly, the second lever 22 rotates in a clockwise direction about the second rotation shaft 23, so that the hook plate 22a of the second lever 22 is fixed to the power distribution panel door 41. As it rotates to the release position, the distribution panel door 41 is allowed to open.

Therefore, when the circuit breaker is in the open position (OFF position) and the energization on the circuit is cut off, the user is allowed to open the switchboard door 41 so that the user opens the switchboard door 41 to open the circuit breaker in the switchboard SG. It is possible to carry out maintenance work such as checking (CB).

As described above, in the interlocking device of the circuit breaker and the switchboard door according to the present invention, the second interlocking lever mechanism 20 can be installed on the inner wall surface of the switchboard enclosure 40 so as to be easily variable in position. Since the restraining plate 30 is also formed on a plate that can be easily positioned and installed in the switchboard door 41, the effect of easily changing the installation position can be obtained.

Since the interlocking device of the circuit breaker and the switchboard door according to the present invention has a rotation locking or unlocking configuration by a lever and a restraining plate, there is a possibility of malfunction in comparison with the conventional structure of locking or unlocking by the linear movement of the locking hole and the lock rod. Minimized effect can be obtained.

1: spindle 2: spindle lever
2a: connection protrusion
3: first lever 3a: spindle lever connecting portion
3a1: connection groove 3b: bottom
3b1: spring connection part 3b2: power transmission means connection groove
3c: rotary shaft support wall portion 4: first rotary shaft
5: support bolt 6: wire end support tube
7: first substrate 8: substrate fixing screw
9: substrate fixing screw 10: first interlocking lever mechanism
20: second interlock lever mechanism 21: second substrate
22: second lever 22a: hook portion
22b: spring connection 22c: power transmission means connection
23: second axis of rotation 24: substrate fixing screw
30: Restraint 40: Enclosure
41: power distribution panel door 51: support rack
52: support pillar C1: first coupling
C2: second coupling CB: circuit breaker
E: distal head S1: first return spring
S2: wire return spring S3: second return spring
SG: switchboard W1: wire
W2: wire first end W3: wire second end

Claims (6)

In the interlocking device of the circuit breaker and the switchboard door,
A main shaft commonly connected to the plurality of movable contacts to simultaneously open and close the plurality of phase movable contacts in the circuit breaker;
A main shaft lever bearing at an end portion of the main shaft projecting to the outer surface of the circuit breaker and rotating in the same direction as the main shaft rotates to a circuit open position or a circuit closing position;
A first position provided on an outer surface of the circuit breaker and connected to the main shaft lever and interlocked with the rotation of the main shaft lever to be positioned when the main shaft is in the open circuit position or a second position when the main shaft is in the circuit closing position; A first interlock lever mechanism rotatable to a position;
A lock position which is provided on an inner wall surface of an enclosure of the switchboard and connected to the first interlocking lever mechanism and which does not allow opening of the switchboard door in accordance with rotation of the main shaft to a circuit open position or a circuit closing position, and opening of the switchboard door. A second interlock lever mechanism rotatable to an unlocked position to permit the locking mechanism;
Power transmission means for transmitting power by the rotation of the first interlocking lever mechanism to the second interlocking lever mechanism; And
A restraining plate fixed to the switchboard door, the restraining plate being restrained by the second linkage lever mechanism when in the locked position and released from the second linkage lever mechanism so as to open the switchboard door when in the unlocked position; Interlocking device between the circuit breaker and the distribution panel door. The method of claim 1, wherein the first linkage lever mechanism,
A first substrate fixedly installed at a position adjacent to the spindle lever; And
And a first lever rotatably supported by the first substrate, the first lever having a connecting groove connected to the main shaft lever and a connecting part connected to the power transmission means. 3. The method of claim 2,
And a first return spring having one end supported by the first lever and the other end supported by the first substrate to apply elastic force to the first lever such that the first lever mechanism is positioned at the first position. Interlocking device between circuit breaker and switchboard door. The method of claim 1, wherein the second linkage lever mechanism,
A second substrate fixedly installed at a position adjacent to the switchboard door on an inner wall surface of an enclosure of the switchboard; And
And a second lever rotatably supported by the second substrate and connected to the power transmission means, the second lever being rotatable to a locked position or a released position. The method of claim 4, wherein the second linkage lever mechanism,
And a second return spring having one end supported by the second lever and the other end supported by the second substrate to impart an elastic force to the second lever such that the second linkage lever mechanism is positioned in the release position. Interlocking device between circuit breaker and switchboard door. The method of claim 4, wherein the second lever,
A circuit breaker and a switchboard which are hooked to the restraint plate and provided with a locking position which does not allow opening of the switchboard door and a hook portion which is separated from the restraint plate and rotatable to a release position allowing the opening of the switchboard door. Door interlock.


KR1020100047698A 2010-05-20 2010-05-20 Interlock apparatus for circuit breaker and switchgear KR101345173B1 (en)

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Application Number Priority Date Filing Date Title
KR1020100047698A KR101345173B1 (en) 2010-05-20 2010-05-20 Interlock apparatus for circuit breaker and switchgear

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KR101345173B1 true KR101345173B1 (en) 2013-12-27

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EP3319104A1 (en) 2016-11-02 2018-05-09 LSIS Co., Ltd. Door locking device of distribution board of air circuit breaker
US10256052B2 (en) 2016-11-02 2019-04-09 Lsis Co., Ltd. Integrated interlock device of air circuit breaker and method of using the same

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KR101667636B1 (en) * 2014-09-29 2016-10-19 엘에스산전 주식회사 Mechanical Interlock of Circuit Breaker
KR101650697B1 (en) * 2014-10-08 2016-08-25 현대중공업 주식회사 Interlock device of door and switch-gear having the same
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EP3319104A1 (en) 2016-11-02 2018-05-09 LSIS Co., Ltd. Door locking device of distribution board of air circuit breaker
CN108022773A (en) * 2016-11-02 2018-05-11 Ls 产电株式会社 The door locking device of the distribution box of air-break
US10090120B2 (en) 2016-11-02 2018-10-02 Lsis Co., Ltd. Door locking device of distribution board of air circuit breaker
US10256052B2 (en) 2016-11-02 2019-04-09 Lsis Co., Ltd. Integrated interlock device of air circuit breaker and method of using the same

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