CN204632613U - A kind of pull-out type excitation low pressure side switch - Google Patents
A kind of pull-out type excitation low pressure side switch Download PDFInfo
- Publication number
- CN204632613U CN204632613U CN201520255793.1U CN201520255793U CN204632613U CN 204632613 U CN204632613 U CN 204632613U CN 201520255793 U CN201520255793 U CN 201520255793U CN 204632613 U CN204632613 U CN 204632613U
- Authority
- CN
- China
- Prior art keywords
- pressure side
- low pressure
- side switch
- pull
- excitation low
- 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
- 230000005284 excitation Effects 0.000 title claims abstract description 39
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000002955 isolation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Abstract
A kind of pull-out type excitation low pressure side switch, it comprises excitation low pressure side switch (1) and shell (2), the both sides of described excitation low pressure side switch (1) are provided with balancing stand (3), described shell (2) is sleeved on the outside of excitation low pressure side switch (1), the position that the inner side of shell (2) is corresponding with balancing stand (3) is provided with guide rail (4), and described balancing stand (3) and guide rail (4) pull-out type are slidably connected.The utility model changes excitation low pressure side switch into pull-out type by fixed, efficiently solves the needs of excitation system power failure Maintenance and Repair when main transformer does not stop to use as a servant; Break down once switch, do not need main transformer to stop the problem of using as a servant Quick overhaul and changing spare part.
Description
Technical field
The utility model relates to pump-storage generator, is especially applied to the pull-out type transformation of ABB-EMAX series fixed switch, a kind of pull-out type excitation low pressure side switch specifically.
Background technology
At present, the excitation system of hydroenergy storage station unit is generally the complete import equipment of ABB, main transformer low-pressure side directly taken from by field power supply, become for exciter panel cabinet through three-phase 15.75kV/400V excitation, excitation low pressure side switch ECB breakpoint is only had from main transformer low-pressure side to exciter panel cabinet inlet wire, it is ABB-EMAX fixed switch that excitation low pressure side exchanges service entrance switch, isolate excitation system needs owing to reckoning without during design when corresponding main transformer does not stop labour, there is following 2 obvious hidden danger or defect:
(1) this switch only to possess point, combined floodgate circuit breaker function, and " safety " points out that circuit breaker can not as isolation of system point, this just means that the excitation system of Yixing company does not possess the Secure isolation condition of maintenance separately when corresponding main transformer does not have a power failure, and brings greatly inconvenience to the maintenance of excitation system.
(2), when corresponding main transformer does not have a power failure, excitation low pressure side switch ECB does not possess the function that trouble hunting is changed, if this switch breaks down, then will directly cause corresponding main transformer unplanned outage, power plant safety stable operation is caused to having a strong impact on.
Summary of the invention
The purpose of this utility model is in the excitation system for hydroenergy storage station unit, excitation low pressure side switch ECB breakpoint is only had from main transformer low-pressure side to exciter panel cabinet inlet wire, excitation low pressure side exchanges the potential safety hazard of service entrance switch existing for the ABB-EMAX fixed switch problem stable with impact, proposes a kind of pull-out type excitation low pressure side switch.
The technical solution of the utility model is:
A kind of pull-out type excitation low pressure side switch, it comprises excitation low pressure side switch and shell, the both sides of described excitation low pressure side switch are provided with balancing stand, described outer cover suit is in the outside of excitation low pressure side switch, the position that the inner side of shell is corresponding with balancing stand is provided with guide rail, and described balancing stand and guide rail pull-out type are slidably connected.
The holddown groove that the copper bar on excitation low pressure side switch can be allowed to pass is provided with in shell of the present utility model.
The beneficial effects of the utility model:
The utility model changes excitation low pressure side switch into pull-out type by fixed, efficiently solves the needs of excitation system power failure Maintenance and Repair when main transformer does not stop to use as a servant; Break down once switch, do not need main transformer to stop the problem of using as a servant Quick overhaul and changing spare part.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is shell rear surface structural representation of the present utility model.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described.
A kind of pull-out type excitation low pressure side switch, it comprises excitation low pressure side switch 1 and shell 2, the both sides of described excitation low pressure side switch 1 are provided with balancing stand 3, described shell 2 is sleeved on the outside of excitation low pressure side switch 1, the position that the inner side of shell 2 is corresponding with balancing stand 3 is provided with guide rail 4, and described balancing stand 3 is slidably connected with guide rail 4 pull-out type.
The holddown groove 6 that the copper bar 5 on excitation low pressure side switch 1 can be allowed to pass is provided with in shell 2 of the present utility model.
During concrete enforcement:
First former fixed breaker bus hold-down screw is removed, then circuit breaker hold-down screw is removed, from power distribution cabinet, remove Switch main body, be placed on horizontal table.
1) pull down switch panel, fixed breaker reequiped:
To shake and carry out installation and balancing stand and guide rail into shake-out machine structure;
Fixed secondary terminal box is replaced with copper bar, installs holddown groove in the enclosure;
2) breaker body of having reequiped is put into shell, whether Test Switchboard body coordinates normal with shell;
3) by new circuit breaker lifting extremely former floatless switch position, match with busbar, regulate busbar and enclosure location, till coordinating completely, note the original electrical interlock of cabinet and control overflow.
The utility model does not relate to the part prior art that maybe can adopt all same as the prior art and is realized.
Claims (2)
1. a pull-out type excitation low pressure side switch, it is characterized in that it comprises excitation low pressure side switch (1) and shell (2), the both sides of described excitation low pressure side switch (1) are provided with balancing stand (3), described shell (2) is sleeved on the outside of excitation low pressure side switch (1), the position that the inner side of shell (2) is corresponding with balancing stand (3) is provided with guide rail (4), and described balancing stand (3) and guide rail (4) pull-out type are slidably connected.
2. pull-out type excitation low pressure side switch according to claim 1, is characterized in that being provided with in shell (2) holddown groove (6) that the copper bar (5) on excitation low pressure side switch (1) can be allowed to pass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520255793.1U CN204632613U (en) | 2015-04-24 | 2015-04-24 | A kind of pull-out type excitation low pressure side switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520255793.1U CN204632613U (en) | 2015-04-24 | 2015-04-24 | A kind of pull-out type excitation low pressure side switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204632613U true CN204632613U (en) | 2015-09-09 |
Family
ID=54051615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520255793.1U Expired - Fee Related CN204632613U (en) | 2015-04-24 | 2015-04-24 | A kind of pull-out type excitation low pressure side switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204632613U (en) |
-
2015
- 2015-04-24 CN CN201520255793.1U patent/CN204632613U/en not_active Expired - Fee Related
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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 |
Granted publication date: 20150909 |