KR101692788B1 - Circuit breaker - Google Patents
Circuit breaker Download PDFInfo
- Publication number
- KR101692788B1 KR101692788B1 KR1020150057387A KR20150057387A KR101692788B1 KR 101692788 B1 KR101692788 B1 KR 101692788B1 KR 1020150057387 A KR1020150057387 A KR 1020150057387A KR 20150057387 A KR20150057387 A KR 20150057387A KR 101692788 B1 KR101692788 B1 KR 101692788B1
- Authority
- KR
- South Korea
- Prior art keywords
- enclosure
- vacuum valve
- support plate
- circuit breaker
- movable contact
- Prior art date
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/662—Housings or protective screens
- H01H33/66207—Specific housing details, e.g. sealing, soldering or brazing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/662—Housings or protective screens
- H01H33/66261—Specific screen details, e.g. mounting, materials, multiple screens or specific electrical field considerations
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/662—Housings or protective screens
- H01H33/66207—Specific housing details, e.g. sealing, soldering or brazing
- H01H2033/66215—Details relating to the soldering or brazing of vacuum switch housings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/662—Housings or protective screens
- H01H33/66261—Specific screen details, e.g. mounting, materials, multiple screens or specific electrical field considerations
- H01H2033/66276—Details relating to the mounting of screens in vacuum switches
Landscapes
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
A circuit breaker according to an embodiment of the present invention includes an enclosure, a vacuum valve disposed inside the enclosure and having one end fixedly secured to the enclosure, and a vacuum valve disposed between the vacuum valve and the enclosure, And at least one insertion groove into which the support plate is inserted in a sliding manner is formed on the inner wall of the enclosure, and at least one through hole may be formed in the support plate.
According to this circuit breaker, the movement of the vacuum valve is blocked through the support plate and the vacuum valve is stably supported. Therefore, it is possible to prevent the position of the vacuum valve from being deformed or distorted even in repetitive operation of the contacts.
Description
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circuit breaker, and more particularly, to a circuit breaker capable of suppressing the movement of a vacuum valve due to a breaking shock.
When a fault occurs in the power system, a high fault current corresponding to several tens of times the rated current can flow due to a sudden drop in the load impedance. In order to prevent the spread of the fault area and damage of other equipment in case of power system accident, the fault current should be automatically shut off quickly and the reliability of the circuit breaker having such function has a key influence on the reliability of the whole system. Circuit breakers used in distribution systems are mainly composed of VCB (Circuit Breaker) which is excellent in blocking performance, safety and reliability, and the usage of circuit breaker is gradually increasing as load is increased.
Generally, the circuit breaker has a vacuum valve in which a fixed contact and a movable contact are provided inside an insulating container. The movable contact receives power from the driving unit and is electrically connected to and disconnected from the fixed contact.
At the moment when the movable contact is separated from the fixed contact, such a circuit breaker generates a strong repulsive force between the contacts due to the electromagnetic force, and this repulsive force acts as an external force to the movable contact.
As the external force repeatedly acts, the movable contact does not maintain the fixed position but moves to the outside, resulting in a problem of misalignment between the contact points.
SUMMARY OF THE INVENTION It is an object of the present invention to provide a circuit breaker capable of suppressing the movement of a movable contact.
A circuit breaker according to an embodiment of the present invention includes an enclosure, a vacuum valve disposed inside the enclosure and having one end fixedly secured to the enclosure, and a vacuum valve disposed between the vacuum valve and the enclosure, And at least one insertion groove into which the support plate is inserted in a sliding manner is formed on the inner wall of the enclosure, and at least one through hole may be formed in the support plate.
In the present embodiment, the vacuum valve includes a fixed contact disposed at one end of the vacuum valve and fixed to the housing, and a movable contact disposed at the other end of the vacuum valve and arranged to be movable in the vacuum valve can do.
In this embodiment, one end of the support plate may be disposed at a position adjacent to the other end of the vacuum valve, and the other end may be fastened to the inner wall of the enclosure.
The circuit breaker according to an embodiment of the present invention includes an enclosure, a vacuum valve disposed inside the enclosure and having one end fixedly coupled to the enclosure, and a support plate coupled to the enclosure and suppressing movement of the vacuum valve, At least one insertion groove into which the support plate is inserted in a sliding manner is formed on the inner wall of the enclosure, and at least one through hole may be formed in the support plate.
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The circuit breaker according to the embodiment of the present invention having such a configuration cuts off the movement of the vacuum valve through the support plate and stably supports the vacuum valve. Therefore, it is possible to prevent the position of the vacuum valve from being deformed or distorted even in repetitive operation of the contacts.
1 is a sectional view of a circuit breaker in an open state according to an embodiment of the present invention;
2 is a sectional view of the closed state of the circuit breaker shown in Fig.
3 is a perspective view of the circuit breaker shown in Fig.
Fig. 4 is an exploded perspective view of the circuit breaker shown in Fig. 3; Fig.
5 is a cross-sectional view taken along line AA of FIG.
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. However, the embodiments of the present invention can be modified into various other forms, and the scope of the present invention is not limited to the embodiments described below. Further, the embodiments of the present invention are provided to more fully explain the present invention to those skilled in the art. In addition, the shape and size of elements in the figures may be exaggerated for clarity.
Fig. 1 is a sectional view of an open state of a circuit breaker according to an embodiment of the present invention, and Fig. 2 is a sectional view of a closed state of the circuit breaker shown in Fig.
1 and 2, a circuit breaker according to an embodiment of the present invention will be described.
A
The
The
For internal isolation of the
At least one
The
Meanwhile, in this embodiment, a plurality of protrusions are formed on the inner wall of the
The
The
The inside of the insulating
In this embodiment, the
The fixed
The
The
The
The
The
The
The
The
The
Here, the contact load refers to a load applied to the contact surface between the
For reference, the higher the contact pressure load, the more stable and smooth the energization between the contacts, and the detachment of the contacts by the electric force can be prevented.
This
The
One end of the
The
More specifically, the
Thus, when the
Fig. 3 is a perspective view of the circuit breaker shown in Fig. 1, Fig. 4 is an exploded perspective view of the circuit breaker shown in Fig. 3, and Fig. 5 is a sectional view taken along line A-A of Fig.
3 to 5, a
Since the
Therefore, in order to prevent the position of the insulating
The
In the
Accordingly, it may be effective that the
Also, at least one through
When the through
Accordingly, the
The above-described circuit breaker according to the embodiment of the present invention blocks the movement of the vacuum valve through the support plate and stably supports the vacuum valve. Therefore, it is possible to prevent the position of the vacuum valve from being deformed or distorted even in repetitive operation of the contacts.
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be obvious to those of ordinary skill in the art.
100: Circuit breaker
110: enclosure
190: Vacuum valve
120: insulating container
130: Fixed contact
140: movable contact
143:
145: sealing member
147: Bellows
150: buffer member
160: Connection load
170: Support plate
175: Through hole
Claims (6)
A vacuum valve disposed inside the enclosure and having one end fixedly coupled to the enclosure; And
And a support plate disposed between the vacuum valve and the enclosure to maintain a distance between the vacuum valve and the enclosure,
At least one insertion groove into which the support plate is inserted in a sliding manner is formed on an inner wall of the enclosure,
And at least one through-hole is formed in the support plate.
A fixed contact disposed at one end of the vacuum valve and coupled to the housing; And
A movable contact disposed on the other end side of the vacuum valve and movable in the vacuum valve;
Circuit breaker.
Wherein one end is disposed at a position adjacent to the other end of the vacuum valve and the other end is fastened to an inner wall of the enclosure.
A vacuum valve disposed inside the enclosure and having one end fixedly coupled to the enclosure; And
And a support plate coupled to the enclosure and restraining movement of the vacuum valve,
At least one insertion groove into which the support plate is inserted in a sliding manner is formed on an inner wall of the enclosure,
And at least one through-hole is formed in the support plate.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020150057387A KR101692788B1 (en) | 2015-04-23 | 2015-04-23 | Circuit breaker |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020150057387A KR101692788B1 (en) | 2015-04-23 | 2015-04-23 | Circuit breaker |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20160127217A KR20160127217A (en) | 2016-11-03 |
KR101692788B1 true KR101692788B1 (en) | 2017-01-05 |
Family
ID=57571289
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020150057387A KR101692788B1 (en) | 2015-04-23 | 2015-04-23 | Circuit breaker |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR101692788B1 (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4984818B2 (en) | 2006-10-23 | 2012-07-25 | 三菱電機株式会社 | Switchgear |
WO2013171928A1 (en) | 2012-05-14 | 2013-11-21 | 三菱電機株式会社 | Vacuum valve |
-
2015
- 2015-04-23 KR KR1020150057387A patent/KR101692788B1/en active IP Right Grant
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4984818B2 (en) | 2006-10-23 | 2012-07-25 | 三菱電機株式会社 | Switchgear |
WO2013171928A1 (en) | 2012-05-14 | 2013-11-21 | 三菱電機株式会社 | Vacuum valve |
Also Published As
Publication number | Publication date |
---|---|
KR20160127217A (en) | 2016-11-03 |
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GRNT | Written decision to grant |