CN203932785U - A kind of handcart switch cabinet car body inserts earthing device - Google Patents
A kind of handcart switch cabinet car body inserts earthing device Download PDFInfo
- Publication number
- CN203932785U CN203932785U CN201420273516.9U CN201420273516U CN203932785U CN 203932785 U CN203932785 U CN 203932785U CN 201420273516 U CN201420273516 U CN 201420273516U CN 203932785 U CN203932785 U CN 203932785U
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- CN
- China
- Prior art keywords
- switch cabinet
- handcart
- contact
- fixed contact
- earthing device
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- 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 - Lifetime
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- 230000003044 adaptive effect Effects 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 abstract description 3
- 238000013461 design Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- Gas-Insulated Switchgears (AREA)
Abstract
The utility model relates to transformer station's high-voltage switch cubicle handcart, be specifically related to a kind of handcart switch cabinet car body and insert earthing device, comprise moving contact (3) and fixed contact (4), described moving contact (3) is arranged on door of switch cabinet (1) bottom foremost, described fixed contact (4) is arranged on the bottom inside of switch cabinet body (2), described moving contact (3) and fixed contact (4) are mutually adaptive, and the contact chip in described fixed contact (4) is by earth connection (5) ground connection.The utility model eliminates safe hidden trouble, and guarantees that switching on/off handcart can reliable ground; Simple and quick, advance and insert, pull-out separately, is saved the operating time; Simple in structure, only formed by two parts, be convenient to install; Improve one's methods conveniently, cost is low.
Description
Technical field
The utility model relates to transformer station's high-voltage switch cubicle handcart, is specifically related to a kind of handcart switch cabinet car body and inserts earthing device.
Background technology
Now KYN series central-positioned high-voltage switch cabinet is widely used 35, in 10kV distribution system, the full name of middle-placed switch cabinet is that armored type is removed middle metal enclosed switchgear, its point of three-decker, upper strata is bus and control room (isolation mutually), intermediate layer is breaker chamber, and lower floor is cable vault.In long-term use procedure, we find that this switch cubicle ignored the problem with grounding of switching on/off handcart, are only to contact indirect earthed by the wheel of switching on/off handcart bottom with the track of switch-cabinet grounding.When switch cabinet handcart wheel, track get rusty, spray paint or long-pending while having more dust loose contact, its handcart body earth resistance will significantly raise, considerably beyond 0.5 Ω of substation grounding resistance required standard, and currently require to middle switching on/off handcart measurement of Grounding Resistance the whether qualified maintenance blind area that becomes of switching on/off handcart earth resistance without any testing regulations.Particularly current also some producer is by bus lightning arrester design access switching on/off handcart, invade bus when there being lightning wave, when bus lightning arrester discharge, when very possible lightning wave leakage current passes through handcart bottom, because wheel and track contact resistance are excessive, can not be very soon by discharging into the earth, the equipment residual voltage of making obviously raises, strike back with neighbouring device, cause lightning arrester equipment short circuit explosion accident, cause bus, circuit large-area power-cuts, personnel and device security are formed to very large threat.
Utility model content
The purpose of this utility model is to provide a kind of handcart switch cabinet car body to insert earthing device, solving current central-positioned high-voltage switch cabinet only relies on the wheel of bottom to contact indirect earthed with the track of switch-cabinet grounding, causing can not be very soon by discharging into the earth, the equipment residual voltage of making obviously raises, strike back with neighbouring device, cause lightning arrester equipment short circuit explosion accident, cause circuit large-area power-cuts, personnel and device security are formed to the problem of very large threat.
For solving above-mentioned technical problem, the utility model is by the following technical solutions: a kind of handcart switch cabinet car body inserts earthing device, comprise moving contact and fixed contact, described moving contact is arranged on door of switch cabinet bottom foremost, described fixed contact is arranged on the bottom inside of switch cabinet body, described moving contact and fixed contact are mutually adaptive, and the contact chip in described fixed contact passes through ground connection.
Further technical scheme is, described moving contact and fixed contact are adapted for one group mutually, and this earthing device has two groups at least, be all located at door of switch cabinet bottom foremost with the bottom inside of switch cabinet body.
Compared with prior art, the beneficial effects of the utility model are:
1, eliminate safe hidden trouble, guarantee that switching on/off handcart can reliable ground;
2, simple and quick, advance and insert, pull-out separately, is saved the operating time;
3, simple in structure, only formed by two parts, be convenient to install;
4, improve one's methods conveniently, cost is low.
Brief description of the drawings
Fig. 1 is the structural representation that a kind of handcart switch cabinet car body of the utility model inserts an embodiment of earthing device.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
Fig. 1 shows an embodiment of a kind of handcart switch cabinet car body insertion of the utility model earthing device: a kind of handcart switch cabinet car body inserts earthing device, comprise moving contact 3 and fixed contact 4, described moving contact 3 is arranged on door of switch cabinet 1 bottom foremost, described fixed contact 4 is arranged on the bottom inside of switch cabinet body 2, described moving contact 3 and fixed contact 4 are mutually adaptive, and the contact chip in described fixed contact 4 is by earth connection 5 ground connection.
Insert a preferred embodiment of earthing device according to a kind of handcart switch cabinet car body of the utility model, described moving contact 3 and fixed contact 4 are adapted for one group mutually, this earthing device has two groups at least, be all located at door of switch cabinet 1 bottom foremost with the bottom inside of switch cabinet body 2.
When handcart is during in service position, ground connection moving contact inserts in grounding static contact, has realized reliable ground connection; In the time that switching on/off handcart need to overhaul, directly pull open handcart, ground connection dynamic/static contact separately, can not affect the normal pull-out of handcart.
Although the utility model is described with reference to multiple explanatory embodiment of the present utility model here, but, should be appreciated that, those skilled in the art can design a lot of other amendment and execution modes, within these amendments and execution mode will drop on the disclosed principle scope and spirit of the application.More particularly, in the scope of, accompanying drawing open in the application and claim, can carry out multiple modification and improvement to the building block of subject combination layout and/or layout.Except distortion that building block and/or layout are carried out and improving, to those skilled in the art, other purposes will be also obvious.
Claims (2)
1. a handcart switch cabinet car body inserts earthing device, it is characterized in that: comprise moving contact (3) and fixed contact (4), described moving contact (3) is arranged on door of switch cabinet (1) bottom foremost, described fixed contact (4) is arranged on the bottom inside of switch cabinet body (2), described moving contact (3) and fixed contact (4) are mutually adaptive, and the contact chip in described fixed contact (4) is by earth connection (5) ground connection.
2. a kind of handcart switch cabinet car body according to claim 1 inserts earthing device, it is characterized in that: described moving contact (3) and fixed contact (4) are adapted for one group mutually, this earthing device has two groups at least, be all located at door of switch cabinet (1) bottom foremost and the bottom inside of switch cabinet body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420273516.9U CN203932785U (en) | 2014-05-27 | 2014-05-27 | A kind of handcart switch cabinet car body inserts earthing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420273516.9U CN203932785U (en) | 2014-05-27 | 2014-05-27 | A kind of handcart switch cabinet car body inserts earthing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203932785U true CN203932785U (en) | 2014-11-05 |
Family
ID=51828541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420273516.9U Expired - Lifetime CN203932785U (en) | 2014-05-27 | 2014-05-27 | A kind of handcart switch cabinet car body inserts earthing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203932785U (en) |
-
2014
- 2014-05-27 CN CN201420273516.9U patent/CN203932785U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |