CN201289965Y - Looped network cabinet - Google Patents
Looped network cabinet Download PDFInfo
- Publication number
- CN201289965Y CN201289965Y CNU2008202156955U CN200820215695U CN201289965Y CN 201289965 Y CN201289965 Y CN 201289965Y CN U2008202156955 U CNU2008202156955 U CN U2008202156955U CN 200820215695 U CN200820215695 U CN 200820215695U CN 201289965 Y CN201289965 Y CN 201289965Y
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- CN
- China
- Prior art keywords
- isolating switch
- circuit breaker
- links
- ring main
- main unit
- 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
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- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
The utility model relates to a ring main unit, which comprises a cabinet body; a main bus is arranged in the cabinet body; the main bus is connected with a circuit breaker through an isolating switch; and an interlocking device is arranged between the isolating switch and the circuit breaker. The utility model adopts the interlock of the isolating switch and the circuit breaker, so that the incorrect manipulation can be prevented effectively, the operational reliability of the complete machine is improved, and the functions of remote control, remote measurement and remote signal through microcomputer integrated protection are realized.
Description
Technical field
The utility model relates to a kind of device for switching, especially a kind of ring main unit.
Background technology
At present, existing ring main unit adopts the SF6 on-load switch, and on the one hand, this switch product has satisfied instructions for use substantially on performance, but one of gas of the destruction environment that SF6 gas (sulphur hexafluoride) is international convention to be assert should limit and eliminate gradually; On the other hand, relative complex is safeguarded, operated to the anti-in short-term electric current relatively low (being up to 20KA) of existing ring main unit.In addition, the cabinet of existing ring main unit adopts panel beating riveting assembling structure, causes the rigidity of whole cabinet and intensity relatively poor, safeguards, operates relative complex.
The utility model content
The purpose of this utility model is to provide a kind of to be convenient to operate, favorable working performance, ring main unit that reliability is high.
For achieving the above object, a kind of ring main unit that the utility model provides comprises cabinet, and main bus bar is set in the cabinet, and described main bus bar connects with circuit breaker by isolating switch, between isolating switch and the circuit breaker interlock is set.
The utility model adopts isolating switch and circuit breaker interlocking, has prevented misoperation effectively, has improved the functional reliability of complete machine, can realize remote control, remote measurement and remote signalling function by computer integrated protection.
Description of drawings
Fig. 1 is an electrical equipment general assembly drawing of the present utility model;
Fig. 2 is an electrical schematic diagram of the present utility model.
Embodiment
A kind of ring main unit, comprise cabinet 10, control room 90 and main bus bar 20 are set in the cabinet 10, main bus bar 20 is the three-phase main bus bar, and main bus bar 20 links to each other with isolating switch 30, and isolating switch 30 touches with the upper end of the vacuum interrupter 41 of circuit breaker 40, between isolating switch 30 and the circuit breaker 40 interlock is set, described cabinet 10 adopts the KS section bar to make, and has improved the rigidity and the intensity of cabinet, has further improved the stability and the reliability of ring main unit.As shown in Figure 1.
In conjunction with Fig. 1, the contact knife 31 of described isolating switch 30 links with the upper end of the vacuum interrupter 41 of circuit breaker 40, and the lower end of vacuum interrupter 41 links to each other with the input of current transformer 50.The utility model has greater flexibility selecting for use of main switch, isolating switch 30 and vacuum load switch is organically combined, and effectively realized anti-misoperation; Operating procedure when adopting vacuum circuit-breaker is as follows:
Send the electricity operation: at first, check whether the Qianmen is reliably closed, and by closed isolating switch 30 after the inspection of power supply import voltage; Secondly, by the control switch on operation control room 90 instrument boards circuit breaker 40 is carried out closing operation; Send electric end of operation.
Operation has a power failure: at first, by the control switch on the operation board circuit breaker 40 is carried out sub-switching operation; Secondly, manually grasp mechanism by isolating switch 30 isolating switch 30 is carried out separating brake; The power failure end of operation.
This shows, when work, only behind the vacuum load switch separating brake, isolating switch 30 could disconnect, in this case, because the interlocking effect between isolating switch 30 and the circuit breaker 40, isolating switch 30 can't disconnect prior to vacuum load switch, has improved the fail safe of operation; Only when isolating switch 30 was in closing position, vacuum load switch could close a floodgate, and major loop is connected.
In conjunction with Fig. 2, described main bus bar 20 links to each other with the input of isolating switch 30, the output of isolating switch 30 links to each other with the input of current transformer 50, current transformer output in 50 minutes three tunnel, the fuse 60 of leading up to links to each other with voltage transformer 70, the circuit breaker 40 of leading up to links to each other with power consumption equipment, and another road is by lightning arrester 80 ground connection.If the user has when required, can be provided with the selectable unit that detects the primary circuit operation in the ring main unit is charged display unit, this device is made up of transducer 91 and 92 two unit of display, display 92 is arranged on the panel of control room 90, and the output of current transformer 50 links to each other with display 92 by transducer 91.This device not only can be pointed out the high tension loop charged state, but also can cooperate with electromagnetic lock, realize mandatory latch switch handle, net door etc., reach and prevent full splice grafting ground, charged pass switch, prevent mistakenly entering charged chamber, thus the anti-error performance of raising complete sets of products.
In sum, core of the present utility model is to adopt the isolating switch 30 and the vacuum load switch of interlocking, has effectively prevented misoperation, has promoted the fail safe and the reliability of complete machine operation, can realize remote control, remote measurement and remote signalling function by computer integrated protection.
Claims (7)
1, a kind of ring main unit, comprise cabinet (10), main bus bar (20) is set in the cabinet (10), it is characterized in that: described main bus bar (20) connects with circuit breaker (40) by isolating switch (30), between isolating switch (30) and the circuit breaker (40) interlock is set.
2, ring main unit according to claim 1 is characterized in that: described cabinet (10) adopts the KS section bar to make.
3, ring main unit according to claim 1 is characterized in that: described circuit breaker (40) is a vacuum circuit-breaker.
4, ring main unit according to claim 1, it is characterized in that: described main bus bar (20) links to each other with the input of isolating switch (30), the output of isolating switch (30) links to each other with the input of current transformer (50), current transformer (50) divides three tunnel outputs, the fuse (60) of leading up to links to each other with voltage transformer (70), the circuit breaker (40) of leading up to links to each other with power consumption equipment, and another road is by lightning arrester (80) ground connection.
5, ring main unit according to claim 1 is characterized in that: described main bus bar (20) is the three-phase main bus bar.
6, according to claim 1 or 3 described ring main units, it is characterized in that: the contact knife (31) of described isolating switch (30) touches mutually with the upper end of the vacuum interrupter (41) of circuit breaker (40), and the lower end of vacuum interrupter (41) links to each other with the input of current transformer (50).
7, ring main unit according to claim 4, it is characterized in that: the output of described current transformer (50) links to each other with display (92) by transducer (91), control room (90) is set in the cabinet (10), and display (92) is arranged on the panel of control room (90).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202156955U CN201289965Y (en) | 2008-11-07 | 2008-11-07 | Looped network cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202156955U CN201289965Y (en) | 2008-11-07 | 2008-11-07 | Looped network cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201289965Y true CN201289965Y (en) | 2009-08-12 |
Family
ID=40981646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202156955U Expired - Fee Related CN201289965Y (en) | 2008-11-07 | 2008-11-07 | Looped network cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201289965Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101728781B (en) * | 2009-12-16 | 2012-06-13 | 北京合纵科技股份有限公司 | Solid isolated vacuum ring main unit |
| CN102882135A (en) * | 2012-10-15 | 2013-01-16 | 济南济变志亨电力设备有限公司 | Locking device for high current ring main unit |
| CN103414168A (en) * | 2013-06-21 | 2013-11-27 | 国家电网公司 | Vacuum circuit breaker type ring main unit |
| CN107179762A (en) * | 2017-05-02 | 2017-09-19 | 国网青海省电力公司西宁供电公司 | A kind of method that application multi-compartment mimic-disconnecting switch tests ring main unit remote signal |
-
2008
- 2008-11-07 CN CNU2008202156955U patent/CN201289965Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101728781B (en) * | 2009-12-16 | 2012-06-13 | 北京合纵科技股份有限公司 | Solid isolated vacuum ring main unit |
| CN102882135A (en) * | 2012-10-15 | 2013-01-16 | 济南济变志亨电力设备有限公司 | Locking device for high current ring main unit |
| CN103414168A (en) * | 2013-06-21 | 2013-11-27 | 国家电网公司 | Vacuum circuit breaker type ring main unit |
| CN107179762A (en) * | 2017-05-02 | 2017-09-19 | 国网青海省电力公司西宁供电公司 | A kind of method that application multi-compartment mimic-disconnecting switch tests ring main unit remote signal |
| CN107179762B (en) * | 2017-05-02 | 2019-09-17 | 国网青海省电力公司西宁供电公司 | A method of ring network cabinet remote signal is tested using multi-compartment mimic-disconnecting switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090812 Termination date: 20131107 |