CN201315210Y - Flexible arc extinguishing power resistor with serial structure - Google Patents
Flexible arc extinguishing power resistor with serial structure Download PDFInfo
- Publication number
- CN201315210Y CN201315210Y CNU2008202277057U CN200820227705U CN201315210Y CN 201315210 Y CN201315210 Y CN 201315210Y CN U2008202277057 U CNU2008202277057 U CN U2008202277057U CN 200820227705 U CN200820227705 U CN 200820227705U CN 201315210 Y CN201315210 Y CN 201315210Y
- Authority
- CN
- China
- Prior art keywords
- resistor
- arc extinguishing
- power resistor
- flexible arc
- extinguishing power
- 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
Images
Landscapes
- Details Of Resistors (AREA)
Abstract
The utility model relates to a resistor, in particular to a flexible arc extinguishing power resistor with a serial structure, which solves the problems in the prior flexible arc extinguishing power resistor, such as low thermal shock capacity, high possibility of turn-to-turn short circuits and the like. The flexible arc extinguishing power resistor includes resistors, of which each is formed by a threaded ceramic base body and a resistance alloy tape wound around the base body, and is characterized in that supporting plates are fixed at the two ends of each resistor; connecting terminals are mounted at the two ends of each resistor; and the two resistors are arranged between the two supporting plates. The flexible arc extinguishing power resistor with the serial structure provided by the utility model has the advantages that the two resistors in series operation mode are mounted between the two supporting plates, so as to effectively reduce the temperature rise of the power resistor caused by pulse thermal shocks, avoid the turn-to-turn short circuit phenomenon due to excessive temperature rise, and further improve the reliability and service life of the whole electrical equipment. The flexible arc extinguishing power resistor with the serial structure can be mainly applied in electrical equipment with higher requirements on electrical protection degree and output power degree.
Description
Technical field
The utility model relates to resistor, is specially soft arc extinguishing cascaded structure power resistor.
Background technology
Soft arc extinguishing power resistor is mainly used in the higher electric equipment of electrical equipment degree of protection and power output class requirement.Be used to reduce the overvoltage that produces owing to the direct current intermediate link of importing the AC/DC rectification circuit or cause owing to load variations, and reduce direct current intermediate link dV/dt voltage change ratio power device and direct current are supported the useful life of capacitor, the influence of reliability, satisfy the dynamic responding speed of whole electric equipment.Existing soft arc extinguishing power resistor comprises by the screw thread ceramic matrix, adopts canoe to be fixed in the resistor that the electric resistance alloy band on the matrix constitutes, and described resistance two ends are fixed with supporting bracket, and the resistance two ends are provided with binding post.At present, the power grade that uses along with many electric equipments improves constantly, and power, useful life and the failure rate etc. that require to use power device wherein require also to improve thereupon.And have only a resistor between two supporting brackets of existing soft arc extinguishing power resistor, and its thermal shock capability is little, and when the pulse energy on being applied to power resistor was big, the temperature rise of power resistor was prone to phenomenons such as turn-to-turn short circuit also than higher.Thereby can reduce the reliability and the useful life of electric equipment, can not satisfy the requirement of electric equipment in running.
Summary of the invention
The utility model is little in order to solve existing soft arc extinguishing power resistor thermal shock capability, is prone to problems such as turn-to-turn short circuit, and a kind of soft arc extinguishing cascaded structure power resistor is provided.
The utility model is to adopt following technical scheme to realize: soft arc extinguishing cascaded structure power resistor, comprise by the screw thread ceramic matrix, be wound in the resistor that the electric resistance alloy band on the matrix constitutes, the resistor two ends are fixed with supporting bracket, and the resistance two ends are provided with binding post; Between two supporting brackets, be provided with two described resistors.During use, two resistor in series are connected by terminals.
Soft arc extinguishing cascaded structure power resistor described in the utility model is provided with two resistors and makes two resistors be in the tandem working state between two supporting brackets, effectively reduce the temperature rise of the power resistor that the pulse thermal shock causes, avoid occurring the phenomenon of turn-to-turn short circuit because of temperature rise is too high; Can tolerate the 500kJ energy impact abnormal patterns that causes owing to load short circuits, thus reliability, the useful life of improving whole electric equipment.This soft arc extinguishing cascaded structure power resistor is mainly used in the higher electric equipment of electrical equipment degree of protection and power output class requirement.
Description of drawings
Fig. 1 is the structural representation of soft arc extinguishing cascaded structure power resistor described in the utility model;
Embodiment
Soft arc extinguishing cascaded structure power resistor comprises by the screw thread ceramic matrix, is wound in the resistor 1 that the electric resistance alloy band on the matrix constitutes, and resistor 1 two ends are fixed with supporting bracket 2, and resistor 1 two ends are provided with binding post; Between two supporting brackets 2, be provided with two described resistors 1.Specifically add man-hour, the same with existing power resistor, adopt novel series connection unenclosed construction method, on the screw thread ceramic matrix, process thread groove, the electric resistance alloy band is wound in the thread groove on the matrix, is convenient to the installation and the natural cooling of electric resistance alloy band like this.
Claims (1)
1, a kind of soft arc extinguishing cascaded structure power resistor comprises by the screw thread ceramic matrix, is wound in the resistor (1) that the electric resistance alloy band on the matrix constitutes, and resistor (1) two ends are fixed with supporting bracket (2), and resistor (1) two ends are provided with binding post; It is characterized by: between two supporting brackets (2), be provided with two described resistors (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202277057U CN201315210Y (en) | 2008-11-26 | 2008-11-26 | Flexible arc extinguishing power resistor with serial structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202277057U CN201315210Y (en) | 2008-11-26 | 2008-11-26 | Flexible arc extinguishing power resistor with serial structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201315210Y true CN201315210Y (en) | 2009-09-23 |
Family
ID=41127008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202277057U Expired - Fee Related CN201315210Y (en) | 2008-11-26 | 2008-11-26 | Flexible arc extinguishing power resistor with serial structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201315210Y (en) |
-
2008
- 2008-11-26 CN CNU2008202277057U patent/CN201315210Y/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201498988U (en) | ZnO and SiC compound circuit used for arc extinction, harmony extinction and overvoltage protection | |
| CN201075817Y (en) | Series connection high voltage bridge arm having voltage equalizing protection | |
| CN201234130Y (en) | Lightning arrester circuit for communication equipment | |
| CN204068232U (en) | Lightning prevention surge circuit | |
| CN202678007U (en) | Varistor with self-protection function | |
| CN201315210Y (en) | Flexible arc extinguishing power resistor with serial structure | |
| CN203339665U (en) | Novel distributed series compensation system | |
| CN212183122U (en) | Lightning protection voltage-resistant overcurrent protection circuit applied to products in power industry | |
| CN202455034U (en) | Tripping circuit of inrush current controller for high-voltage switch | |
| CN201421756Y (en) | Six-phase lightning protector | |
| CN2556830Y (en) | Short-circuit current combined limiter | |
| CN201315205Y (en) | Open precharge high-power resistor | |
| CN201247952Y (en) | Waterproof single-phase B+C power supply lightning protection box | |
| CN201319283Y (en) | Novel generator rotor demagnetization and over-voltage protecting device | |
| CN201574893U (en) | Self-close brake device for permanent magnet direct-drive/semi-direct-drive wind turbine generator system | |
| CN107785869A (en) | A kind of current transformer and its secondary side protective arrangement for limiting output voltage | |
| CN203883666U (en) | Grid-connected control device of frequency converter | |
| CN101718260B (en) | Self-sealing brake device of permanent-magnet direct drive/semi-direct drive wind generating set | |
| CN220210268U (en) | Energy storage converter | |
| CN203632234U (en) | Capacitor charge release system of buffer arc extinguishing cabinet | |
| CN217010681U (en) | Mounting structure of high-power switch device absorption resistor | |
| CN202221890U (en) | Lightening proof circuit used for DC motor and main power source return circuit | |
| CN210985666U (en) | Mounting structure of voltage compensation circuit of static var generator | |
| CN201032681Y (en) | Household creepage breaker capable of preventing thunder surge current | |
| CN202817748U (en) | Grounding-free three-phase power supply lightning protection module |
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: 20090923 Termination date: 20131126 |