CN100468896C - Switching device for power distribution - Google Patents
Switching device for power distribution Download PDFInfo
- Publication number
- CN100468896C CN100468896C CNB2005100899047A CN200510089904A CN100468896C CN 100468896 C CN100468896 C CN 100468896C CN B2005100899047 A CNB2005100899047 A CN B2005100899047A CN 200510089904 A CN200510089904 A CN 200510089904A CN 100468896 C CN100468896 C CN 100468896C
- Authority
- CN
- China
- Prior art keywords
- current transformer
- circuit breaker
- mentioned
- switching device
- power distribution
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The object of the present invention is to provide a switchgear for distributing electric power capable of protecting from ground fault across the entire load side, that includes a circuit breaker for widened protection range, and of improving the reliability. To achieve the object, a circuit breaker 11, a current transformer 12 and a zero-phase-sequence current transformer 10 are arranged in series, to constitute units which are mounted on a truck 14 and stored in a reception/distribution board 1. A distribution opening/closing unit 9 can be connected/disconnected to/from a power-supply side conductor 20 and load-side conductors 33 and 34. The zero-phase-sequence current transformer 10 is arranged on the power supply side of the circuit breaker 11.
Description
Technical field
The present invention relates to switching device for power distribution that circuit breaker, current transformer and zero phase current transformer configured in series are constituted.
Background technology
As everyone knows, switching device for power distribution is made of circuit breaker, current transformer and zero phase current transformer configured in series.Use vacuum circuit-breaker as circuit breaker, and be typically provided with surge absorber.
Such switching device for power distribution is loaded on the dolly and is contained in the input and output distribution board with cellular construction.Make by travelling car or the mobile unit structure that can be switched on or switched off freely with mains side conductor and load side conductor in orbit.Such switching device for power distribution for example, is documented in patent documentation 1-Japan and opens in fact in flat 7-No. 11813 specifications and 2003-No. 189422 communiques of patent documentation 2-TOHKEMY.
The switching device for power distribution of conventional art is disposed at zero phase current transformer the load side of circuit breaker.Therefore, the problem of existence is that the circuit breaker side that comprises circuit breaker at the zero phase current transformer mains side is not carried out the ground connection detection and reduced reliability.
Summary of the invention
The object of the present invention is to provide and a kind ofly can carry out ground protection, enlarged protection range and can improve the switching device for power distribution of reliability the load side integral body that comprises circuit breaker.
Switching device for power distribution of the present invention, circuit breaker, current transformer and zero phase current transformer are contained in the input and output distribution board, above-mentioned circuit breaker is made and can be switched on or switched off freely with mains side conductor and load side conductor, it is characterized in that above-mentioned zero phase current transformer is disposed at the mains side of above-mentioned circuit breaker.
Switching device for power distribution of the present invention, circuit breaker, current transformer and zero phase current transformer are made the switch element structure, and be loaded on the dolly and be contained in the input and output distribution board, it can be the structure that is switched on or switched off freely with mains side conductor and load side conductor that above-mentioned switch element structure is made, it is characterized in that above-mentioned zero phase current transformer is disposed at the mains side of above-mentioned circuit breaker.
The present invention is owing to be disposed at the mains side of circuit breaker with zero phase current transformer, and can all carry out ground protection to the load side that comprises circuit breaker, so enlarged protection range and can improve reliability.
Description of drawings
Fig. 1 is the integrally-built end view of expression one embodiment of the present of invention.
Fig. 2 is the summary winding diagram of distribution of the present invention with switch element.
Fig. 3 is the stereogram that the seen distribution of the present invention of one side is used switch element from the front.
Fig. 4 is the stereogram that the seen distribution of the present invention of one side is used switch element from the back side.
Fig. 5 is a stereogram of removing framework from Fig. 4.
Fig. 6 is the exploded perspective view of distribution of the present invention with switch element.
Fig. 7 is the structure chart of the example of insulated electric conductor of the present invention unit.
Fig. 8 is the sectional view of structure of the example of insulated electric conductor of the present invention unit.
Fig. 9 is the summary winding diagram of the distribution of expression another embodiment of the present invention with switch element.
Figure 10 is the structure chart of expression another embodiment of the present invention.
Figure 11 is the key diagram of another embodiment shown in Figure 10.
Embodiment
Switching device for power distribution is made cellular construction with circuit breaker, current transformer and zero phase current transformer, is loaded on the dolly also can be contained in the input and output distribution board.The unit is made and can be utilized dolly to move the structure that is switched on or switched off freely with mains side conductor and load side conductor greatly.Zero phase current transformer is disposed at the mains side of circuit breaker, and current transformer is disposed at the load side of circuit breaker.Zero phase current transformer is with a circle rail type zero phase current transformer that surrounds the three phase mains side terminal of circuit breaker unshakable in one's determination.The unit has surge absorber.
Fig. 1 represents one embodiment of the present of invention.Fig. 1 is the integrally-built end view of expression, be expression with two station power distributions with the stacked along the vertical direction example of switch element.
Among Fig. 1, input and output distribution board 1 is separated by dividing plate 2, and the front face side on diagram right side forms breaker chamber 3, and the rear side in diagram left side forms cable vault 4.Be provided with the door 5 of band handle 6 in the front face side of input and output distribution board 1.Two ground connection (overcurrent) protection relay 7a, 7b have been installed on door 5.
In breaker chamber 3, dispose two supporting bracket 8a, 8b being fixed on the dividing plate 2.Two station power distributions are loaded on supporting bracket 8a, the 8b with switch element 9a, 9b.Distribution is made of zero phase current transformer (ZCT) 10, vacuum circuit-breaker (VCB) 11, current transformer 12 and the surge absorber (SA) 13 that is used to be protected from lightning surge with switch element 9.Vacuum circuit-breaker (VCB) 11 is made of open circuit (vacuum valve) 11a of portion and operating portion 11b of vacuum.In addition, in breaker chamber 3,, omitted diagram though be provided with the terminal base that is connected with the external electric of input and output distribution board 1.
Two station power distributions are loaded into respectively on the dolly 14 with switch element 9a, 9b.Distribution with switch element 9a, 9b in front side controling appliance 15 has been installed, and direction (illustrating right-hand) is provided with and pulls out distribution with the handle 16 of switch element 9 in front.Distribution is fixing by lock pin (not shown) under illustrated state with switch element 9a, 9b, must pull down lock pin when direction is pulled out in front and pull handle 16.
Constitute two station power distributions as shown in Figure 2 with the configuration relation of zero phase current transformer (ZCT) 10, vacuum circuit-breaker (VCB) 11, current transformer 12 and the surge absorber 13 of switch element 9a, 9b.Zero phase current transformer 10, vacuum circuit-breaker 11, current transformer 12 configured in series, and zero phase current transformer 10 is disposed at the mains side of circuit breaker 11.Current transformer 12 is disposed at the load side of circuit breaker 11, and surge absorber 13 is connected with the load side of circuit breaker 11.
As shown in Figure 2, the mains side of zero phase current transformer 10 is connected with mains side conductor 20 by connection fittings such as binding clip 17, and the load side of current transformer 12 is connected with load side conductor by connection fittings 17.The zero phase current transformer 10 of configured in series, vacuum circuit-breaker 11 and current transformer 12 be owing to be installed on the switch element 9, so, cut off and being connected of mains side conductor 20 and load side conductor if go out 9 of switch elements to the front layback.
Two station power distributions are stacked along the vertical direction, indicated as shown with switch element 9a, 9b, the mains side of the circuit breaker 11 of two unit 9a, 9b that above-below direction is adjacent with the position of load side relation be about the structure of balanced configuration.In addition, the position relation of the current transformer 12 of two switch element 9a, 9b and zero phase current transformer 10 is structures of balanced configuration up and down.
In cable vault 4, be provided with the mains side conductor element 20 that is insulated by die casting.Mains side conductor element 20 is with horizontal conductor (copper strips) 21R of vertical conductor 22R, 22S, 22T and the three-phase of three-phase, the same alternate structure connected to one another of 21S, 21T as shown in Figure 7.Vertical conductor 22 has formed recess at middle body as shown in Figure 8, when carrying out the die casting insulation with molding material 23, makes the structure that upper end 22a and lower end 22b are exposed from molding material 23.
Mains side conductor element 20 is installed on the installing component 25.Installing component 25 is installed on the dividing plate 2 that forms rectangular shape, and the inner space forms conductor process chamber 26.In conductor process chamber 26, be provided with the insulating sleeve 27 of the zero phase current transformer 10 that has connected switch element 9a and the insulating sleeve 28 of the zero phase current transformer 10 that has been connected switch element 9b.Insulating sleeve three-phase setting in 27,28 fens.What in fact be connected with insulating sleeve 27,28 in addition, is the power supply side terminal that constitutes the circuit breaker 11 of switch element 9a, 9b.
The conductor 31 that is connected with insulating sleeve 27 is connected on the upper end exposed division 22a of vertical conductor 22, and the conductor 32 that is connected with insulating sleeve 28 is connected on the lower end exposed division 22b of vertical conductor 22.
Be provided with the insulating sleeve 29 of the current transformer 12 that has connected switch element 9a and the insulating sleeve 30 of the current transformer 12 that has been connected switch element 9b in the cable vault of dividing plate 24 sides.Insulating sleeve three-phase setting in 29,30 fens.On insulating sleeve 29, connect load side conductor 33, on insulating sleeve 30, connected load side conductor 34. Load side conductor 33,34 has been omitted partly diagram.What in fact be connected with insulating sleeve 29,30 in addition, is the load side terminal that constitutes the circuit breaker 11 of switch element 9a, 9b.
Have the inspection socket (square opening) 35 about 400mm in the bottom of dividing plate 2.Inspection socket 35 is installed in cover plate 36 coverings that formed by mylar etc. on the dividing plate 2 with bolt.In addition, on the top board of cable vault 4, also have square inspection socket 37, and cover with cover plate 38.
In addition, distribution uses the structure of switch element 9 shown in Fig. 3～6.Fig. 3 is the stereogram of the being seen switch element 9 of one side from the front, and Fig. 4 is the stereogram of the being seen switch element 9 of one side from the back side, and Fig. 5 is a stereogram of removing the framework of switch element 9 from Fig. 4, and Fig. 6 is the exploded perspective view of switch element 9.
In Fig. 3～Fig. 6, switch element 9 is equipped with shaft-like handle 16 in the front of vacuum circuit-breaker 11.The 11a of the portion that opens circuit of vacuum circuit-breaker 11 and operating portion 11b are loaded into the front side of dolly 14.The 11a of portion that opens circuit forms with 3 insulating cylinders.Dolly 14 has 4 wheels 39.
On the vertical frame 40 of the operating portion 11b both sides that are fixed on circuit breaker 11, be stamped cover plate 42.The top and bottom of cover plate 42 are inverse bending in the horizontal direction.Utensil mounting panel 41 is fixed on the vertical frame 40, and controling appliance 15 has been installed on utensil mounting panel 41.
Fixed two vertical frames 43 at the rear side of dolly 14, and connected vertical frame 40 and vertical frame 43 with connecting frame 44.Surge absorber is installed accessory 45 and is fixed on the connecting frame 44.Three surge absorbers 13 are installed in to be installed on the accessory 45.
On the 11a of the portion that opens circuit of circuit breaker 11,, three power supply side terminals 47 have been installed, three load side terminals 48 have been installed in lower horizontal in upper horizontal as Fig. 4, shown in Figure 5.Upside at two vertical frames 43 is provided with zero phase current transformer installation accessory 46.Zero phase current transformer 10 is with a circle rail type zero phase current transformer that surrounds the three phase mains side terminal 47 of circuit breaker 11 unshakable in one's determination, and is fixed on the zero phase current transformer installation accessory 46 with bolt and nut.
Downside at two vertical frames 43 is provided with current transformer installation accessory 49.Current transformer 12 is disposed on the two-phase load side terminal 48 of three-phase load side terminal 48 of circuit breaker 11, and is installed in current transformer and installs on the accessory 49.When removing two vertical frames 43, connecting frame 44, when accessory 45,46,48 etc. is installed, then being machines configurations shown in Figure 5, in addition, it is decomposed then as shown in Figure 6.
Though switching device for power distribution of the present invention is made such structure; but because circuit breaker, current transformer and zero phase current transformer are contained in the input and output distribution board; circuit breaker is made the structure that is switched on or switched off freely with mains side conductor and load side conductor; and zero phase current transformer is configured in the mains side of circuit breaker; owing to can carry out ground protection to the load side integral body that comprises circuit breaker, so can enlarge protection range and improve reliability.
In addition, the foregoing description is owing to making cellular construction with circuit breaker, current transformer and zero phase current transformer, so can make its miniaturization.
In addition, though the foregoing description is configured in the mains side of circuit breaker with zero phase current transformer, can certainly both be configured in the mains side of circuit breaker with current transformer and zero phase current transformer.In addition, obviously, zero phase current transformer can not be a circle orbit-shaped but oval or circular, in addition, and also can be in three meterings of each phase configuration of circuit breaker power supply side terminal with current transformer and utilize three to be combined to output to detect Zero-phase current.
In addition, though the circuit breaker in the foregoing description is example with the vacuum circuit-breaker, air circuit, oil circuit breaker, gas-break switch etc. also can obtain same effect certainly.
And,, also can be cable, insulated electric conductor, the insulation of powder sintered cover layer, heat-shrinkable tube insulation etc. obviously though the mains side conductor element is made the die casting insulation system.
Fig. 9 represents another embodiment of the present invention.The embodiment of Fig. 9 represents not zero phase current transformer 10, vacuum circuit-breaker 11 and current transformer 12 blocking of configured in series and the summary winding diagram of decentralized configuration on input and output distribution board 1.
Fig. 9 is mains side and the load side that connection fittings 17 is disposed at vacuum circuit-breaker 11, and the structure that only circuit breaker 11 is connected or disconnects with load side conductor from the mains side conductor.The structure of decentralized configuration zero phase current transformer 10, circuit breaker 11 and current transformer 12 also can obtain the effect identical with embodiment 1 in this wise.
Figure 10 represents an embodiment more of the present invention.The embodiment of Figure 10 is that the breaker chamber of making input and output distribution board 13 can slide into the structure of front one side to guarantee to check space 50.The slip of breaker chamber 3 can be made of for example guideway.Check that in order to enter space 50 is by pulling out breaker chamber 3 and utilize the inspection socket 51 that is formed on the top board and being located at the inspection socket 35 of dividing plate 2 bottoms.
When a plurality of input and output distribution boards being made the structure of distribution board row, form inspection space 50 (inspection passage) as shown in figure 11.In addition, though form inspection passage 50, only also can form inspection passage 50 is pulled out and formed to the input and output distribution board that needs in the distribution board row to check along whole distribution board row.
The embodiment of Figure 10, because when needs are checked the input and output distribution board, can in the input and output distribution board, guarantee necessary inspection space, so do not need the inspection space of the input and output distribution board back side and side, so the input and output distribution board back side and side can be installed near building walls, have the effect that to dwindle erection space.Particularly, more effective when a plurality of input and output distribution boards are constituted the distribution board row.
Claims (9)
1. switching device for power distribution, circuit breaker, current transformer and zero phase current transformer are contained in the input and output distribution board, above-mentioned circuit breaker is made and can be switched on or switched off freely with mains side conductor and load side conductor, and it is characterized in that: above-mentioned zero phase current transformer is disposed at the mains side of above-mentioned circuit breaker.
2. switching device for power distribution, circuit breaker, current transformer and zero phase current transformer are made the switch element structure, and be loaded on the dolly and be contained in the input and output distribution board, it can be the structure that is switched on or switched off freely with mains side conductor and load side conductor that above-mentioned switch element structure is made, and it is characterized in that: above-mentioned zero phase current transformer is disposed at the mains side of above-mentioned circuit breaker.
3. switching device for power distribution according to claim 1 and 2 is characterized in that: above-mentioned current transformer is disposed at the load side of above-mentioned circuit breaker.
4. switching device for power distribution according to claim 1 and 2, it is characterized in that: above-mentioned zero phase current transformer is a circle rail type zero phase current transformer, above-mentioned circuit breaker has the three phase mains side terminal, in above-mentioned zero phase current transformer, and the above-mentioned three phase mains side terminal of encirclement unshakable in one's determination.
5. switching device for power distribution according to claim 1 and 2 is characterized in that: above-mentioned current transformer is disposed on the two-phase load side terminal of three-phase load side terminal of above-mentioned circuit breaker.
6. switching device for power distribution according to claim 1 and 2 is characterized in that: have surge absorber.
7. switching device for power distribution according to claim 1 and 2 is characterized in that: above-mentioned circuit breaker is a vacuum circuit-breaker.
8. switching device for power distribution according to claim 1 and 2 is characterized in that: above-mentioned mains side conductor is made up horizontal conductor and vertical conductor and is insulated and the insulated electric conductor unit that constitutes.
9. switching device for power distribution according to claim 2, it is characterized in that: the structure of above-mentioned switch element structure is, when with a plurality of when stacked along the vertical direction, the mains side of the circuit breaker of two unit that above-below direction is adjacent and the position of load side relation are balanced configuration up and down, and the position relation of above-mentioned current transformer and zero phase current transformer is balanced configuration up and down.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004233510 | 2004-08-10 | ||
| JP2004233510 | 2004-08-10 | ||
| JP2005012501 | 2005-01-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1734866A CN1734866A (en) | 2006-02-15 |
| CN100468896C true CN100468896C (en) | 2009-03-11 |
Family
ID=36077125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100899047A Expired - Fee Related CN100468896C (en) | 2004-08-10 | 2005-08-04 | Switching device for power distribution |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100468896C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3065239B1 (en) * | 2013-10-30 | 2021-07-14 | Mitsubishi Electric Corporation | Current transformer support device, and switchgear using said current transformer support device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4504885A (en) * | 1982-04-23 | 1985-03-12 | Hitachi, Ltd. | Switch board |
-
2005
- 2005-08-04 CN CNB2005100899047A patent/CN100468896C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4504885A (en) * | 1982-04-23 | 1985-03-12 | Hitachi, Ltd. | Switch board |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1734866A (en) | 2006-02-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4114665B2 (en) | Switchgear for power distribution | |
| US8008594B2 (en) | Vacuum insulated switchgear | |
| CN101626149B (en) | Solid insulated bus switchgear | |
| KR101297265B1 (en) | Switch gear | |
| JP5484638B2 (en) | Gas insulated switchgear | |
| KR101336968B1 (en) | Multi distribution panel for a large number of loads | |
| CN100468896C (en) | Switching device for power distribution | |
| CN204633201U (en) | A kind of totally-enclosed all insulation compact Inflatable ring main unit | |
| KR101874988B1 (en) | Load brake switch | |
| KR101338254B1 (en) | Distributing panel for very high voltage | |
| JP4896786B2 (en) | Gas insulated switchgear | |
| CN201252341Y (en) | Power distributing cabinet used for air insulation of a medium voltage protection switch | |
| JP4395183B2 (en) | Switchgear for power distribution | |
| JP2007104752A (en) | Gas-insulated switchgear | |
| KR20180000846U (en) | Switchgear | |
| CN102017038B (en) | Medium voltage switch unit | |
| JPH08308041A (en) | Gas insulated switchgear | |
| US9077159B2 (en) | Electrical metering and switching equipment | |
| CN101842950B (en) | Electromagnetic contactor | |
| US20230283052A1 (en) | Modular Plug-in Power Distribution Panel Assembly for Critical Loads | |
| JPH11155209A (en) | Gas-insulated cubicle | |
| CN110649469A (en) | Electrical metering and switching device | |
| KR20240019020A (en) | GIS Gas Insulated Switchgear | |
| EP1113545A1 (en) | A medium voltage power distribution cubicle | |
| JPH0370406A (en) | Transformer equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090311 Termination date: 20160804 |