CN201478729U - Indoor box-type metal enclosed ring main unit - Google Patents
Indoor box-type metal enclosed ring main unit Download PDFInfo
- Publication number
- CN201478729U CN201478729U CN2009201903772U CN200920190377U CN201478729U CN 201478729 U CN201478729 U CN 201478729U CN 2009201903772 U CN2009201903772 U CN 2009201903772U CN 200920190377 U CN200920190377 U CN 200920190377U CN 201478729 U CN201478729 U CN 201478729U
- Authority
- CN
- China
- Prior art keywords
- load switch
- switch
- circuit breaker
- main unit
- ring main
- 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
- 239000002184 metal Substances 0.000 title claims abstract description 10
- 230000007246 mechanism Effects 0.000 claims description 9
- 238000009434 installation Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 1
- 229960000909 sulfur hexafluoride Drugs 0.000 description 1
Images
Landscapes
- Patch Boards (AREA)
Abstract
The utility model relates to an indoor box-type metal enclosed ring main unit which comprises a casing, a load switch, a breaker, a current transformer, an earthing switch, a bus chamber, an instrument chamber, a branch busbar, a connecting busbar and a connecting cable, wherein the a load switch interlocking device and an earthing switch interlocking device are respectively arranged between the breaker and the load switch as well as between the breaker and the earthing switch. When the breaker is under closed state, the load switch interlocking device and the earthing switch interlocking device can lock the operation holes of the load switch and the earthing switch, then the load switch and the earthing switch cannot be switched on to operate, and the electrified operation of the load switch and the mis-operation of the earthing switch are prevented, therefore, the metal enclosed ring main unit has the advantages of safe and reliable use. The metal enclosed ring main unit is suitable for control and protection devices in the looped network power supply and terminal power supply of power systems or biradial power supply systems.
Description
Technical field
The utility model relates to a kind of switchgear, particularly about a kind of box metal enclosed ring main unit.
Background technology
Indoor box metal enclosed ring main unit is applicable to the electric power system ring network power supply; control and protective device in terminal power supply or the biradial electric power system; generally by housing; on-load switch; circuit breaker; current transformer; earthed switch; bus-bar room; the control room; branch's busbar; stube cable is formed; bus in the bus-bar room is connected the high pressure inlet wire with the on-load switch fixed contact; the moving contact of on-load switch is connected with the fixed contact of circuit breaker by branch's busbar; the moving contact of circuit breaker is connected with a cable by connecting busbar; connecting installation electric current mutual inductance on the busbar; transducer and earthed switch, the on off state of its on-load switch and earthed switch can manually be controlled by handle hole.Its major defect is under the circuit breaker folding condition, and on-load switch and earthed switch can be operated by its handle hole, and the misoperation damage equipment takes place easily, and product reliability and fail safe in use is relatively poor.
Summary of the invention
The purpose of this utility model is the shortcoming that exists at prior art, provides a kind of and can prevent misoperation, uses reliable, safe indoor box metal enclosed ring main unit.
The technical scheme that realizes the utility model purpose comprises housing, on-load switch, circuit breaker, current transformer, earthed switch, bus-bar room, control room, branch's busbar, connects busbar, stube cable, its on-load switch and earthed switch respectively be installed on housing on the on-load switch handle hole be connected with the earthed switch handle hole.Mainly be to be provided with the on-load switch interlock between circuit breaker and the on-load switch, described on-load switch interlock is made up of connecting lever, connecting rod, flap, pull bar, baffle plate, the connecting lever two ends are connected with the operating mechanism of circuit breaker and an end of connecting rod respectively, one end of the other end of connecting rod and flap is hinged, be movably arranged on the housing by bearing pin in the middle of the flap, one end of the other end and pull bar is hinged, the other end of pull bar and baffle plate lower end are hinged, be movably arranged on the housing by alignment pin in the middle of the baffle plate, align with the on-load switch handle hole in the position of breaker closing state lower baffle plate.
The utility model beneficial effect compared with prior art is to be provided with the on-load switch interlock between circuit breaker and the on-load switch, cover on the on-load switch handle hole at breaker closing state lower baffle plate, leave on-load switch handle hole position at circuit breaker off-state lower baffle plate, prevent the on-load switch hot line job, have characteristics such as use is reliable, safety.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the structural representation of on-load switch interlock among the utility model Fig. 1.
Embodiment
Indoor box metal enclosed ring main unit as shown in Figure 1 comprises housing 2, on-load switch 8, circuit breaker 5, current transformer 13, earthed switch 15, bus-bar room, control room, branch's busbar 7, connects busbar 16, stube cable 3.Housing 2 is by ground connection busbar 1 ground connection, on-load switch 8 adopts the sulphur hexafluoride on-load switch, circuit breaker 5 is a vacuum circuit-breaker, the action bars of on-load switch 8 and earthed switch 15 is installed on on-load switch handle hole 10 and earthed switch handle hole 17 inboards on the housing 2 respectively, and stube cable 3 is installed in the cable vault.Bus in the bus-bar room is connected the fixed contact of high pressure inlet wire with on-load switch 8, branch's busbar 7 is connected the moving contact of on-load switch 8 with the fixed contact of circuit breaker 5, the moving contact of circuit breaker 5 is connected with stube cable 3 by connecting busbar 16, is connecting installation electric current mutual inductance 13, transducer 14 and earthed switch 15 on the busbar 16.Be provided with the on-load switch interlock between circuit breaker 5 and the on-load switch 8, described on-load switch interlock is made up of connecting lever 6, connecting rod 18, flap 19, pull bar 20, baffle plate 21, connecting lever 6 two ends are connected with the operating mechanism of circuit breaker 5 and an end of connecting rod 18 respectively, one end of the other end of connecting rod 18 and flap 19 is hinged, be movably arranged on the housing 2 by bearing pin in the middle of the flap 19, one end of the other end and pull bar 20 is hinged, other end baffle plate 21 lower ends of pull bar 20 are hinged, be movably arranged on the housing 2, as shown in Figure 2 by alignment pin 25 in the middle of the baffle plate 21.Connecting lever 6 is connected on the parts that link with moving contact in circuit breaker 5 operating mechanisms, and corners can be movably arranged on the installed part that is connected with housing 2 by bearing pin in the middle of the flap 19.Under circuit breaker 5 closure states, connecting rod 18 is pulled down, and by flap 19 pull bar 20 is pushed away to the right, is alignd with on-load switch handle hole 10 in the position of baffle plate 21, blocks on-load switch handle hole 10, prevents on-load switch 8 hot line jobs.Baffle plate 21 is hinged with the rocking bar 24 on the on-load switch indicator board 23 by connecting plate 22.
Be provided with the earthed switch interlock between circuit breaker 5 and the earthed switch 15, this earthed switch interlock comprises bent plate, interlock plate 4, plate washer mechanism, be movably arranged on the fixture that is connected with housing 2 by alignment pin in the middle of the interlock plate 4, two ends are connected with the operating mechanism and the plate washer mechanism of circuit breaker 5 respectively, shelves orifice plate 26 in circuit breaker 5 closure state lower baffle mechanisms aligns with earthed switch handle hole 17, prevent charged combined floodgate earthed switch 15, cause misoperation.After earthed switch 15 closed a floodgate, the operating mechanism by earthed switch interlock pinning circuit breaker 5 can not be operated circuit breaker 5, prevents misoperation generation security incident.
The instrument door 9 of control room is provided with charged display unit 11, protective relaying device 12 and prompting button or KK change over switch, prevents that mistake from closing or mistake is divided circuit breaker 5.Be provided with interlock between cable vault's door and the earthed switch 15, when earthed switch 15 is in gate-dividing state, pin cable vault's door, it can not be opened, prevent that the charged cable vault that enters from security incident taking place by the earthed switch interlock.
Its operating sequence is: when sending electricity, shut the earthed switch 15-of the cable vault's door-separately on-load switch 8-circuit breaker 5 that closes that closes; During interruption maintenance, separately circuit breaker 5-separates the on-load switch 8-earthed switch 15-that closes out and opens cable vault's door.
Claims (1)
1. indoor box metal enclosed ring main unit, comprise housing (2), on-load switch (8), circuit breaker (5), current transformer (13), earthed switch (15), bus-bar room, the control room, branch's busbar (7), connect busbar (16), stube cable (3), its on-load switch (8) and earthed switch (15) respectively be installed on housing (2) on on-load switch handle hole (10) be connected with earthed switch handle hole (17), it is characterized in that being provided with the on-load switch interlock between circuit breaker (5) and the on-load switch (8), described on-load switch interlock is by connecting lever (6), connecting rod (18), flap (19), pull bar (20), baffle plate 21 is formed, connecting lever (6) two ends are connected with the operating mechanism of circuit breaker (5) and an end of connecting rod (18) respectively, one end of the other end of connecting rod (18) and flap (19) is hinged, be movably arranged on the housing (2) by bearing pin in the middle of the flap (19), one end of the other end and pull bar (20) is hinged, the other end of pull bar (20) and baffle plate (21) lower end are hinged, be movably arranged on the housing (2) by alignment pin in the middle of the baffle plate (21), align with on-load switch handle hole (10) in the position of circuit breaker (5) closure state lower baffle plate (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201903772U CN201478729U (en) | 2009-08-03 | 2009-08-03 | Indoor box-type metal enclosed ring main unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201903772U CN201478729U (en) | 2009-08-03 | 2009-08-03 | Indoor box-type metal enclosed ring main unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201478729U true CN201478729U (en) | 2010-05-19 |
Family
ID=42414986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201903772U Expired - Fee Related CN201478729U (en) | 2009-08-03 | 2009-08-03 | Indoor box-type metal enclosed ring main unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201478729U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102377117A (en) * | 2011-12-12 | 2012-03-14 | 济南轨道交通装备有限责任公司 | Maintaining and protecting system for transformer of wind driven generator |
| CN103022927A (en) * | 2012-12-05 | 2013-04-03 | 广东天富电气集团有限公司 | Intelligent fixed type metal closed vacuum circuit breaker looped network switch device |
| CN103414168A (en) * | 2013-06-21 | 2013-11-27 | 国家电网公司 | Vacuum circuit breaker type ring main unit |
-
2009
- 2009-08-03 CN CN2009201903772U patent/CN201478729U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102377117A (en) * | 2011-12-12 | 2012-03-14 | 济南轨道交通装备有限责任公司 | Maintaining and protecting system for transformer of wind driven generator |
| CN102377117B (en) * | 2011-12-12 | 2014-07-23 | 济南轨道交通装备有限责任公司 | Maintaining and protecting system for transformer of wind driven generator |
| CN103022927A (en) * | 2012-12-05 | 2013-04-03 | 广东天富电气集团有限公司 | Intelligent fixed type metal closed vacuum circuit breaker looped network switch device |
| CN103414168A (en) * | 2013-06-21 | 2013-11-27 | 国家电网公司 | Vacuum circuit breaker type ring main unit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201541058U (en) | Intelligent misoperation prevention system of substation primary equipment | |
| CN1945771B (en) | Outdoor high voltage double power source vacuum breaker | |
| CN104201571A (en) | Anti-misoperation ground protection mechanism for dry type transformer | |
| CN101588026A (en) | A kind of 24kV intermediate switchgear cabinet | |
| CN113168981A (en) | Switches and protection devices for low voltage panels and low voltage panels containing switches and protection devices | |
| CN201508796U (en) | Mining explosion-proof type permanent magnetic vacuum feed switch | |
| CN203192640U (en) | Interlocking device of high-voltage stationary cabinet | |
| CN201478729U (en) | Indoor box-type metal enclosed ring main unit | |
| CN201994576U (en) | Double-bus bar fixed metallic enclosed switching device | |
| CN201466474U (en) | Novel grounding switch operating blocking mechanism for metalclad withdraw switchgear | |
| CN104051180A (en) | 10kV pole-mounted vacuum load switch | |
| CN201918299U (en) | Permanent magnetic mechanism with isolated distribution-network automation switch | |
| CN105932586A (en) | High-voltage switch cabinet | |
| CN201674143U (en) | Mine general handcart type vacuum power distribution cabinet | |
| CN218919597U (en) | Isolation load switch cabinet for protecting used transformer | |
| JP2015050806A (en) | Transformation device control panel | |
| CN208272609U (en) | A kind of residual current action breaker | |
| CN201966089U (en) | Spring-mechanism-operated networking automation switch with isolation switch | |
| CN206991977U (en) | A kind of blocking device for preventing power transformation operation back brake maloperation | |
| CN204258420U (en) | Moving lifting voltage source car | |
| CN202633766U (en) | Preassembled case-type transformer substation transformer cabin safety net door blocking device | |
| CN203398521U (en) | High-voltage ring network switch cabinet | |
| CN202633146U (en) | Fixed high-voltage switch cabinet interlocking mechanism | |
| CN208257244U (en) | The protection exclusive circuit and low-voltage distribution cabinet of electrically operated institution | |
| CN207559280U (en) | Electrical cabinet is grounded blocking device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20100519 Termination date: 20160803 |