CN206211495U - From disengaging combination overvoltage protector - Google Patents
From disengaging combination overvoltage protector Download PDFInfo
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- CN206211495U CN206211495U CN201620816758.7U CN201620816758U CN206211495U CN 206211495 U CN206211495 U CN 206211495U CN 201620816758 U CN201620816758 U CN 201620816758U CN 206211495 U CN206211495 U CN 206211495U
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- protector
- zinc oxide
- protective resistance
- oxide protective
- discharging gap
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Abstract
The utility model is related to a kind of from disengaging combination overvoltage protector, including three the first elements for connecing three-phase and second element being grounded, the first described element includes the fuse link being sequentially connected in series from input, first discharging gap module, first zinc oxide protective resistance, string has the first current transformer in the wiring of the first element, the second described element includes the second zinc oxide protective resistance and the second discharging gap module of arranged in series, string has the second current transformer in the wiring of the second element, described first, the housing of the second element is the integral structure of sealed insulation.Solve protector explosion issues during more than protector itself specified through-current capacity; ensure that zinc oxide protective resistance will not produce thermal runaway to explode; the shortcoming that protector itself can not be protected when achieving over protector rated value; the second accident that thus reduction triggers, it is ensured that electric power system can normally be run for a long time.
Description
Technical field
The utility model is related to electrical equipment, and in particular to a kind of from disengaging combination overvoltage protector.
Background technology
Combination overvoltage protector is mainly used in power plant, transformer station and other kinds electricity supplying and using system, to motor, transformation
Atmospheric over-voltage, switch suffered by all kinds of electrical equipments such as device, switch, bus suit the alternate and phase ground switching overvoltage for causing
Restriction effect is played, protection insulation of electrical installation is without prejudice, is widely used in the overvoltage protection of power equipment.
Existing combination overvoltage protector is often complicated due to live over-voltage condition, has rushing for instantaneous super large energy
Hit overvoltage cause protector zinc oxide protective resistance overheat cause thermal runaway trigger combination overvoltage protector explode so that
Accident is caused to occur.
The content of the invention
The utility model purpose is to provide a kind of disengaging combination overvoltage protector certainly, solves more than protector itself
Protector explosion issues during specified through-current capacity, it is ensured that zinc oxide protective resistance will not produce thermal runaway to explode, and achieve over protection
The shortcoming that protector itself can not be protected during device rated value, the second accident that thus reduction triggers, it is ensured that electric power system
Can normally run for a long time.
In order to realize the above object the technical solution adopted in the utility model is：It is a kind of to be protected from disengaging combination overvoltage
Shield device, including three the first elements for connecing three-phase and second element of ground connection, the first described element are included from input
Fuse link, the first discharging gap module, the first zinc oxide protective resistance being sequentially connected in series, there are string in the wiring of the first element
First current transformer, the second described element includes the second zinc oxide protective resistance and the second discharging gap mould of arranged in series
Group, string has the second current transformer in the wiring of the second element, and the housing of first, second described element is the one of sealed insulation
Body formula structure.
It is of the present utility model to have technical effect that：Electric current during for more than specified through-current capacity by protector is such greatly
Feature, using fuse link is installed additional on protector, realizes during supercurrent that protector and electric power system depart from and disconnects, and realizes the
One zinc oxide protective resistance will not produce thermal runaway to explode.So fuse link just solves existing more than protector rated value
The shortcoming that Shi Buneng is protected to protector itself, the second accident rate that thus reduction triggers, it is ensured that when electric power system can be long
Between normally run.And in the wiring of the second element of first element for connecing three-phase and ground connection of protector respectively string have first,
Second current transformer, first, second current transformer, takes the electric current for connecing three-phase and ground connection respectively, by the electric current that obtains come
Analyze protector overvoltage number of times, thus come infer protector from the terminal of service life also have how long, further to prevent
Protector explodes, and prevents the generation of accident.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is electrical schematic diagram of the present utility model.
Specific embodiment
Referring to the drawings, it is a kind of from disengaging combination overvoltage protector, including three the first elements 10 and for connecing three-phase
Second element 20 of individual ground connection, the first described element 10 includes that the fuse link 11 being sequentially connected in series from input, first are put
Electric gap module 12, the first zinc oxide protective resistance 13, string has the first current transformer 14 in the wiring of the first element 10, described
The second element 20 include the second zinc oxide protective resistance 21 and the second discharging gap module 22 of arranged in series, the second element 20
Wiring on string have the second current transformer 24, first, second described element（10、20）Housing for sealed insulation one
Formula structure.
During for more than specified through-current capacity by protector electric current it is big so the characteristics of, using installing guarantor additional on protector
Dangerous fuse 11, realizes that protector departs from disconnection with electric power system during supercurrent, realizes that the first zinc oxide protective resistance 13 will not
Produce thermal runaway blast.Can not be to protector itself when so fuse link 11 just solves the existing rated value more than protector
The shortcoming protected, the second accident rate that thus reduction triggers, it is ensured that electric power system can normally be run for a long time.And in protection
String has first, second current transformer respectively in the wiring of the second element 20 of first element 10 and ground connection that connect three-phase of device
14th, 24, first, second current transformer 14,24 takes the electric current for connecing three-phase and ground connection respectively, and guarantor is analyzed by the electric current for obtaining
Protect device overvoltage number of times, thus come infer protector from the terminal of service life also have how long, further to prevent protector
Blast, prevents the generation of accident.
Further, the first described discharging gap module 12 includes the discharging gap and high-voltage resistor that are arranged in parallel.
Further, the second described discharging gap module 22 includes the discharging gap and high-voltage resistor that are arranged in parallel.
First, second discharging gap module 12,22 uses parallel high voltage resistor on discharging gap, without by power frequency mistake
Zero arc extinguishing, arc extinguishing is rapid, and extinguishing voltage is high.And as a result of high-voltage resistor and zinc oxide protective resistance（First zinc oxide
The zinc oxide protective resistance 21 of protective resistance 13 or second）Series connection, voltage's distribiuting is uniform under normal circumstances, each undertakes half work
Frequency voltage, makes power-frequency sparkover voltage dispersiveness small, and work puts stabilization.
Further, the first element 10 includes installation sleeve 10a and is arranged in cable overhanging on installation sleeve 10a drawing
Line 10b, described fuse link 11, the first discharging gap module 12, the first zinc oxide protective resistance 13, the first Current Mutual Inductance
Device 14 is arranged in installation sleeve 10a, and the upper ledge face of the bottom of installation sleeve 10a and the second element 20 is in the one of sealed insulation
Formula structure.
So good insulation preformance, seals, and dielectric strength is high, prevents protector electric leakage work.
Claims (4)
1. a kind of from disengaging combination overvoltage protector, including three the first elements for connecing three-phase（10）With one the of ground connection
Two element（20）, it is characterised in that：The first described element（10）Including the fuse link being sequentially connected in series from input（11）、
First discharging gap module（12）, the first zinc oxide protective resistance（13）, the first element（10）Wiring on string have the first electric current
Transformer（14）, described the second element（20）The second zinc oxide protective resistance including arranged in series（21）And between second discharges
Gap module（22）, the second element（20）Wiring on string have the second current transformer（24）, described first, second element（10、
20）Housing for sealed insulation integral structure.
2. according to claim 1 from disengaging combination overvoltage protector, it is characterised in that：Between the first described electric discharge
Gap module（12）Including the discharging gap and high-voltage resistor that are arranged in parallel.
3. according to claim 1 from disengaging combination overvoltage protector, it is characterised in that：Between the second described electric discharge
Gap module（22）Including the discharging gap and high-voltage resistor that are arranged in parallel.
4. according to claim 1 from disengaging combination overvoltage protector, it is characterised in that：First element（10）Including
Installation sleeve（10a）Be arranged in installation sleeve（10a）Upper overhanging cable tail（10b）, described fuse link（11）、
First discharging gap module（12）, the first zinc oxide protective resistance（13）, the first current transformer（14）It is arranged at installation sleeve
（10a）It is interior, installation sleeve（10a）Bottom and the second element（20）Upper ledge face in sealed insulation integral structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620816758.7U CN206211495U (en) | 2016-08-01 | 2016-08-01 | From disengaging combination overvoltage protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620816758.7U CN206211495U (en) | 2016-08-01 | 2016-08-01 | From disengaging combination overvoltage protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206211495U true CN206211495U (en) | 2017-05-31 |
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ID=58756420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620816758.7U Active CN206211495U (en) | 2016-08-01 | 2016-08-01 | From disengaging combination overvoltage protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206211495U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112202154A (en) * | 2020-09-27 | 2021-01-08 | 铜陵有色金属集团股份有限公司 | Gapped overvoltage protector |
-
2016
- 2016-08-01 CN CN201620816758.7U patent/CN206211495U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112202154A (en) * | 2020-09-27 | 2021-01-08 | 铜陵有色金属集团股份有限公司 | Gapped overvoltage protector |
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