CN203278217U - Composite material overvoltage protector for electrification railway - Google Patents
Composite material overvoltage protector for electrification railway Download PDFInfo
- Publication number
- CN203278217U CN203278217U CN 201320256489 CN201320256489U CN203278217U CN 203278217 U CN203278217 U CN 203278217U CN 201320256489 CN201320256489 CN 201320256489 CN 201320256489 U CN201320256489 U CN 201320256489U CN 203278217 U CN203278217 U CN 203278217U
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- China
- Prior art keywords
- composite material
- oxide resistor
- overvoltage protector
- metal oxide
- overvoltage
- 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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- Thermistors And Varistors (AREA)
Abstract
The utility model relates to a circuit overvoltage protection device, and particularly relates to a composite material overvoltage protector for an electrification railway. The composite material overvoltage protector comprises a composite material gap assembly and a non-linear metallic oxide resistor which is connected in series with the composite material gap assembly. The non-linear metallic oxide resistor is then connected in series with a circuit breaker. The composite material overvoltage protector can realize the overvoltage protection of locomotives and contact systems.
Description
Technical field
The utility model relates to the composite material overvoltage protection device that the superpotential protective device of circuit, particularly a kind of electric railway are used.
Background technology
Along with the fast development of China's electric railway, the safe operation problem of Railway Electric equipment highlights day by day, and is wherein particularly important for the control of line over-voltage.The overvoltage that surpasses normal working voltage that produces between the motorcycle pantograph that moves in electric railway and contact line, if the highest voltage that bears over equipment such as top insulation porcelain vases, will produce insulation breakdown, scaling loss locomotive insulator arrangement, blow even substation facilities of contact line conducting wire, seriously jeopardize locomotive and power supply unit safety, even cause driving accident.Therefore it is imperative the locomotive roof overvoltage protection to be studied and improved.
Summary of the invention
The composite material overvoltage protection device that provides a kind of electric railway to use is provided the purpose of this utility model, for the deficiencies in the prior art, can realize the overvoltage protection of locomotive and contact line.
For achieving the above object, the technical solution of the utility model is:
The composite material overvoltage protection device that a kind of electric railway is used is characterized in that: it comprises the gap assembly of composite material and the non-linear metal oxide resistor of series connection with it, the non-linear metal oxide resistor release of connecting again.
By following structure, the advantage that the utlity model has is:
The utility model over-pressure safety device adopts the non-linear metal oxide resistor of series gap as basic overvoltage protective unit; the gap reduces non-linear metal oxide resistor and gets chargeability; non-linear metal oxide resistor makes the gap reliably cease arc, mutually protection.The gap assembly adopts composite material, by the capacitance-resistance value of adjusting play assembly and non-linear oxide resistor, makes the impact coefficient in gap less than 1, makes the overvoltage response in gap improve.The series connection release can be in the situation that the overvoltage protective unit ageing failure fast from system splitting, guarantees locomotive and contact line safe operation.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
See also Fig. 1, the utility model discloses the composite material overvoltage protection device that a kind of electric railway is used.It comprises the gap assembly 1 of composite material and the non-linear metal oxide resistor 2 of series connection with it, non-linear metal oxide resistor 2 release 3 of connecting again.
The other end of this release 3 connects monitor 4, the other end welding system of the gap assembly 1 of composite material.
The gap assembly 1 of composite material of the present utility model adopts composite material to make, and by the gap assembly 1 of adjustment composite material and the capacitance-resistance value of non-linear metal oxide resistor 2, makes the impact coefficient in gap less than 1.The gap reduces the chargeability of non-linear metal oxide resistor 2, and non-linear metal oxide resistor 2 makes the gap reliably cease arc, mutually protection.
The above record, only for utilizing the embodiment of this origination techniques content, modification, variation that any those skilled in the art use this creation to do all belong to the scope of the claims that this creation is advocated, and are not limited to those disclosed embodiments.
Claims (1)
1. composite material overvoltage protection device that electric railway is used, it is characterized in that: it comprises the gap assembly of composite material and the non-linear metal oxide resistor of series connection with it, the non-linear metal oxide resistor release of connecting again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320256489 CN203278217U (en) | 2013-05-13 | 2013-05-13 | Composite material overvoltage protector for electrification railway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320256489 CN203278217U (en) | 2013-05-13 | 2013-05-13 | Composite material overvoltage protector for electrification railway |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203278217U true CN203278217U (en) | 2013-11-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320256489 Expired - Fee Related CN203278217U (en) | 2013-05-13 | 2013-05-13 | Composite material overvoltage protector for electrification railway |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203278217U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105305395A (en) * | 2014-06-17 | 2016-02-03 | 中国北车集团大同电力机车有限责任公司 | Roof overvoltage absorption device for electric locomotive |
-
2013
- 2013-05-13 CN CN 201320256489 patent/CN203278217U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105305395A (en) * | 2014-06-17 | 2016-02-03 | 中国北车集团大同电力机车有限责任公司 | Roof overvoltage absorption device for electric locomotive |
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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: 20131106 Termination date: 20170513 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |