CN2847640Y - Resistance-capacitance overvoltage absorber - Google Patents
Resistance-capacitance overvoltage absorber Download PDFInfo
- Publication number
- CN2847640Y CN2847640Y CN 200520117130 CN200520117130U CN2847640Y CN 2847640 Y CN2847640 Y CN 2847640Y CN 200520117130 CN200520117130 CN 200520117130 CN 200520117130 U CN200520117130 U CN 200520117130U CN 2847640 Y CN2847640 Y CN 2847640Y
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- voltage
- type high
- voltage capacitor
- over
- shell
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Abstract
The utility model relates to a resistance-capacitance over-voltage absorber. A base is fixedly provided with outer shells which belong to three phases of A, B, C. Each outer shell is fixedly provided with a wire-knitted non-inductive resistor which has good heat dispersion performance. A thin polypropylene metal film is used as solid dielectric in each outer shell, and a dry type high-voltage capacitor is fixedly arranged in the outer shell and is made from flame resistant epoxy resin by embedment and has natural-repair functions. The dry type high-voltage capacitor is connected with the wire-knitted non-inductive resistor in series. The other end of the dry type high-voltage capacitor is in contact with the ground, and the grounding position is arranged on the base. The utility model can effectively restrain over-voltage instant oscillation and over-voltage high-frequency current, thus slows down over-voltage wave shapes, lowers steepness and crest values, rapidly attenuates high-frequency oscillation, is very effective on whatever loading equipment, avoids insulation damage to electrical equipment due to over voltage and ensures the safe running of electrical equipment.
Description
One, affiliated technical field
The utility model relates to a kind of overvoltage protection, refers in particular to a kind of capacitance-resistance surge absorber.
Two, background technology
Advantages such as volume is little, in light weight because of having for vacuum circuit-breaker, vacuum load switch, vacuum contactor, vacuum breaker and vacuum recloser equal vacuum switchgear, high-performance, high reliability, convenient, the suitable frequent operation of maintenance test, therefore promptly captured market, all obtained using widely in every field.Therefore but vacuum switchgear is because its arc extinguishing ability is strong especially, causes cut-off overvoltage, repeatedly restrike overvoltage and three-phase synchronous switching off switching overvoltage when cut-offfing load such as motor, transformer, reactor and capacitor easily.Along with the enhancing of stability and safety power supply importance, require strict further to improving system reliability.And overvoltage injury is very big, affects the stability and the reliability of system to a great extent.Therefore, must design a kind of new overvoltage protection to satisfy the demand.
Three, utility model content
The purpose of this utility model is to provide a kind of capacitance-resistance surge absorber, it can suppress superpotential moment vibration and high-frequency current effectively, make that superpotential waveform slows down, steepness and amplitude reduce, the higher-order of oscillation is decayed rapidly, all very effective to any load equipment, electric equipment is avoided because of overvoltage causes insulation damages, guaranteed the security appliance operation.
For achieving the above object, the solution that the utility model is taked is: a kind of capacitance-resistance surge absorber, be fixed with the shell that adheres to A, B, C three-phase separately on the base, the line that fixedly heat dispersion is good on each shell is compiled noninductive resistor, in each shell fixing with the polypropylene metallic film be solid dielectric, the dry-type high-voltage capacitor made by the fire retarding epoxide resin embedding with self-healing function, dry-type high-voltage capacitor and line are compiled noninductive resistor and are connected in series, dry-type high-voltage capacitor other end ground connection, the ground connection place is arranged on the base.
The utility model is received between load side and the ground, just can suppress superpotential moment vibration and high-frequency current effectively, make that superpotential waveform slows down, steepness and amplitude reduce, add the damping action of resistor, the higher-order of oscillation is decayed rapidly, all very effective to any load equipment, electric equipment is avoided because of overvoltage causes insulation damages, guarantee the security appliance operation.
The utility model shows through overvoltage absorption test repeatedly in the laboratory, and when applying lightning impulse voltage, after absorbing through the utility model, this voltage drop gets very low, generally is no more than the twice (peak value) of phase-to-ground voltage.
Technical parameter of the present utility model is listed in the table below:
| Rated voltage KV | Rated capacity μ F ± 10% | Rated resistance Ω ± 10% | 1min power-frequency withstand voltage KV (over the ground alternate) | 1.1Un/3 the time part put | tanδ％ |
| 7.2 | 0.10 | 100 | 30 | ≤10pc | ≤0.04 |
| 12 | 0.10 | 100 | 42 | ≤10pc | ≤0.04 |
| 40.5 | 0.05 | 100 | 95 | ≤10pc | ≤0.04 |
The utility model service condition: (1) ambient air temperature :-20 ℃～+ 40 ℃; (2) height above sea level≤3000m; (3) relative humidity≤95% (20 ℃ time); (4) air of installation site should not contain chemical corrosivity gas and steam, no conductivity and explosive dust; (5) earthquake intensity is no more than 8 degree; (6) rated frequency 50Hz or 60Hz.
Four, description of drawings
Fig. 1 is that the master of present embodiment looks fragmentary cross-sectional view.
Fig. 2 is the elementary diagram of present embodiment.
Among the figure: 1, cap bolt, 2, plain washer, 3, spring washer, 4, line is compiled noninductive resistor, and 5, the dry-type high-voltage capacitor, 6, backstay one, 7, location-plate one, 8, backstay two, 9, location-plate two, 10, hexagon-headed bolt, 11, plain washer, 12, spring washer, 13, hex nut, 14, shell, 15, base.
Five, embodiment
Below in conjunction with embodiment and accompanying drawing thereof the utility model is remake description.
Referring to Fig. 1, a kind of capacitance-resistance surge absorber, be fixed with the shell 14 that adheres to A, B, C three-phase separately on the base 15, the line that fixedly heat dispersion is good on each shell 14 is compiled noninductive resistor 4, in each shell 14 fixing with the polypropylene metallic film be solid dielectric, the dry-type high-voltage capacitor 5 made by the fire retarding epoxide resin embedding with self-healing function, dry-type high-voltage capacitor 5 and line are compiled noninductive resistor 4 and are connected in series, dry-type high-voltage capacitor 5 other end ground connection, the ground connection place is arranged on the base 15.
Referring to Fig. 1, dry-type high-voltage capacitor 5 is fixed in the shell 14 with backstay 1, location-plate 1, backstay 28 and location-plate 29.
Referring to Fig. 1, line also is equipped with the binding post that is made of cap bolt 1, plain washer 2, spring washer 3 above compiling noninductive resistor 4.
Referring to Fig. 1, shell 14 is fixed on the base 15 with hexagon-headed bolt 10, plain washer 11, spring washer 12 and hex nut 13.
Referring to Fig. 2, present embodiment connects between switchgear K lower end and protected electric equipment M one side and the ground, and the closer to protected electric equipment M, effect is good more.Protected electric equipment M: motor capacity is 100～10000KW, transformer 100～45000KVA, capacitor 1000～10000Kvar.
Claims (3)
1, a kind of capacitance-resistance surge absorber, it is characterized in that: be fixed with the shell (14) that adheres to A, B, C three-phase separately on the base (15), each shell (14) is gone up the line that fixedly heat dispersion is good and is compiled noninductive resistor (4), in each shell (14) fixing with the polypropylene metallic film be solid dielectric, the dry-type high-voltage capacitor (5) made by the fire retarding epoxide resin embedding with self-healing function, dry-type high-voltage capacitor (5) and line are compiled noninductive resistor (4) and are connected in series, dry-type high-voltage capacitor (5) other end ground connection, the ground connection place is arranged on the base (15).
2, capacitance-resistance surge absorber according to claim 1 is characterized in that: with backstay one (6), location-plate one (7), backstay two (8) and location-plate two (9) dry-type high-voltage capacitor (5) is fixed in the shell (14).
3, capacitance-resistance surge absorber according to claim 1 is characterized in that: line is compiled the binding post that is made of cap bolt (1), plain washer (2), spring washer (3) also is housed above the noninductive resistor (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520117130 CN2847640Y (en) | 2005-12-06 | 2005-12-06 | Resistance-capacitance overvoltage absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520117130 CN2847640Y (en) | 2005-12-06 | 2005-12-06 | Resistance-capacitance overvoltage absorber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2847640Y true CN2847640Y (en) | 2006-12-13 |
Family
ID=37513062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520117130 Expired - Fee Related CN2847640Y (en) | 2005-12-06 | 2005-12-06 | Resistance-capacitance overvoltage absorber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2847640Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102510008A (en) * | 2011-10-14 | 2012-06-20 | 株洲南车时代电气股份有限公司 | High-speed circuit breaker mounting device and mounting method thereof |
| CN106877282A (en) * | 2017-03-27 | 2017-06-20 | 郑州市电子信息工程学校 | A kind of full-automatic electronic electrical equipment overvoltage crowbar |
-
2005
- 2005-12-06 CN CN 200520117130 patent/CN2847640Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102510008A (en) * | 2011-10-14 | 2012-06-20 | 株洲南车时代电气股份有限公司 | High-speed circuit breaker mounting device and mounting method thereof |
| CN102510008B (en) * | 2011-10-14 | 2014-12-17 | 株洲南车时代电气股份有限公司 | High-speed circuit breaker mounting device and mounting method thereof |
| CN106877282A (en) * | 2017-03-27 | 2017-06-20 | 郑州市电子信息工程学校 | A kind of full-automatic electronic electrical equipment overvoltage crowbar |
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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: 20061213 Termination date: 20101206 |