CN204332810U - Outdoor type primary cut-out - Google Patents
Outdoor type primary cut-out Download PDFInfo
- Publication number
- CN204332810U CN204332810U CN201520016226.0U CN201520016226U CN204332810U CN 204332810 U CN204332810 U CN 204332810U CN 201520016226 U CN201520016226 U CN 201520016226U CN 204332810 U CN204332810 U CN 204332810U
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- CN
- China
- Prior art keywords
- protection circuit
- switch
- zinc oxide
- fixed contact
- oxide arrester
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model is suitable for high-tension fitting field, provide a kind of outdoor type primary cut-out, described outdoor type primary cut-out comprises: casing, pole and insulated tension pole, is also provided with in described pole: vacuum interrupter, impact protection circuit and combined protection circuit; Wherein, described arc control device comprise: fixed contact, moving contact, power supply and drive unit; Drive unit is connected with moving contact, and power supply is connected with drive unit; Impact protection circuit is connected fixed contact and moving contact respectively with the two ends of combined protection circuit; Impact protection circuit comprises: switch, high-tension fuse, gap discharge device, zinc oxide arrester, protective resistance, thermistor and temperature detect switch (TDS).It is high that the technical scheme that the utility model provides has reliability, the advantage that fail safe is high.
Description
Technical field
The utility model belongs to high-tension fitting field, particularly relates to a kind of outdoor type primary cut-out.
Background technology
Primary cut-out (or claim high-voltage switch gear) it not only can cut off or no-load current in closed high circuit and load current; and when system jam by the effect of relay protection; cut off overload electric current and short circuit current; it has quite perfect arc extinguishing structure and enough cutout abilities, can be divided into: oil circuit breaker (bulk-oil circuit-breaker, oil-minimum breaker), sulfur hexafluoride breaker (SF6 circuit breaker), vacuum circuit-breaker, compressed-air circuit breaker etc.
Although existing primary cut-out structure is stablized, for primary cut-out, the fail safe of open circuit is not high, and reliability is inadequate.
Utility model content
The object of the utility model embodiment is to provide a kind of outdoor type primary cut-out, and its fail safe solving prior art is not high, the problem that reliability is inadequate.
The utility model embodiment realizes like this, on the one hand, there is provided a kind of outdoor type primary cut-out, described outdoor type primary cut-out comprises: casing, pole and insulated tension pole, is also provided with in described pole: vacuum interrupter, impact protection circuit and combined protection circuit;
Wherein, described arc control device comprise: fixed contact, moving contact, power supply and drive unit; Drive unit is connected with moving contact, and power supply is connected with drive unit; Impact protection circuit is connected fixed contact and moving contact respectively with the two ends of combined protection circuit;
Impact protection circuit comprises: switch, high-tension fuse, gap discharge device, zinc oxide arrester, protective resistance, thermistor and temperature detect switch (TDS);
Wherein, one end of switch is connected with moving contact, the other end of switch is connected with one end of high-tension fuse, the other end joint gap electric discharge device respectively of high-tension fuse, first zinc oxide arrester, one end of second zinc oxide arrester and the 3rd zinc oxide arrester, gap discharge device is connected fixed contact with the other end of the first zinc oxide arrester, the other end of the second zinc oxide arrester is connected with one end of protective resistance, the other end of protective circuit is connected with fixed contact, the other end of the 3rd zinc oxide arrester is connected with one end of thermistor, the other end of thermistor connects one end of temperature detect switch (TDS), the other end of temperature detect switch (TDS) connects fixed contact.
Optionally, described combined protection circuit comprises: switch, high-tension fuse, protective resistance and protection electric capacity C1; Wherein,
One end of switch is connected with moving contact; the other end of switch is connected with one end of high-tension fuse; the other end of high-tension fuse is connected with one end of the first protective resistance and the second protective resistance respectively; the other end of the first protective resistance connects one end of protection electric capacity C1; the other end of C1 connects fixed contact, and the other end of the second protective resistance connects fixed contact.
In the utility model embodiment, it is good that the technical scheme that the utility model provides has fail safe, the advantage that reliability is high.
Accompanying drawing explanation
The structural representation of the outdoor type primary cut-out that Fig. 1 provides for the utility model;
The pole schematic internal view that Fig. 2 provides for the utility model;
The schematic diagram of the impact protection circuit that Fig. 3 provides for the utility model;
The schematic diagram of the combined protection circuit that Fig. 4 provides for the utility model.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
The utility model embodiment provides a kind of outdoor type primary cut-out, and this outdoor type primary cut-out as shown in Figure 1, 2, comprising: casing 1, pole 2 and insulated tension pole 3; Wherein, be also provided with in pole 2: vacuum interrupter 10, impact protection circuit 11 and combined protection circuit 12;
Wherein, arc control device 10 comprise: fixed contact 101, moving contact 102, power supply 103 and drive unit 104; Drive unit 104 is connected with moving contact 102, and power supply 103 is connected with drive unit 104; Impact protection circuit 11 is connected fixed contact 101 and moving contact 102 respectively with the two ends of combined protection circuit 12;
Impact protection circuit 11 as shown in Figure 3, comprising: switch 40, high-tension fuse 41, gap discharge device 42, zinc oxide arrester 43, protective resistance 44, thermistor 45 and temperature detect switch (TDS) 46;
Wherein, one end of switch 40 is connected with moving contact, the other end of switch 40 is connected with one end of high-tension fuse 41, the other end joint gap electric discharge device 42 respectively of high-tension fuse 41, first zinc oxide arrester 43, one end of second zinc oxide arrester 43 and the 3rd zinc oxide arrester 43, gap discharge device 42 is connected fixed contact with the other end of the first zinc oxide arrester 43, the other end of the second zinc oxide arrester 43 is connected with one end of protective resistance 44, the other end of protective circuit 44 is connected with fixed contact, the other end of the 3rd zinc oxide arrester 43 is connected with one end of thermistor 45, the other end of thermistor 45 connects one end of temperature detect switch (TDS) 46, the other end of temperature detect switch (TDS) 46 connects fixed contact.
The vibrational power flow that the utility model provides impact protection circuit and combined protection circuit; like this can the fail safe of extraordinary protection arc control device; arc control device can not be made breakdown; so it has the high advantage of security performance, in addition, add thermistor and temperature detect switch (TDS); if when voltage is excessive; a loop of impact protection circuit can be turned off timely, avoid thermistor to be burned, so it has the advantage improving fail safe further.
The impact protection circuit that the utility model provides can the impact of extraordinary reply surge voltage, so it has the advantage improving breaker safe.
Combined protection circuit 12 as shown in Figure 4, comprising: switch 40, high-tension fuse 41, protective resistance 44 and protection electric capacity C1; Wherein,
One end of switch 40 is connected with moving contact; the other end of switch 40 is connected with one end of high-tension fuse 41; the other end of high-tension fuse 41 is connected with one end of the first protective resistance 44 and the second protective resistance 44 respectively; the other end of the first protective resistance 44 connects one end of protection electric capacity C1; the other end of C1 connects fixed contact, and the other end of the second protective resistance 44 connects fixed contact.
The combined protection circuit that the utility model provides can improve the protection of circuit breaker to high pressure, improves the fail safe of circuit breaker further.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection range of the present utility model.
Claims (2)
1. an outdoor type primary cut-out, described outdoor type primary cut-out comprises: casing, pole and insulated tension pole, is characterized in that, is also provided with in described pole: vacuum interrupter, impact protection circuit and combined protection circuit;
Wherein, described arc control device comprise: fixed contact, moving contact, power supply and drive unit; Drive unit is connected with moving contact, and power supply is connected with drive unit; Impact protection circuit is connected fixed contact and moving contact respectively with the two ends of combined protection circuit;
Impact protection circuit comprises: switch, high-tension fuse, gap discharge device, zinc oxide arrester, protective resistance, thermistor and temperature detect switch (TDS);
Wherein, one end of switch is connected with moving contact, the other end of switch is connected with one end of high-tension fuse, the other end joint gap electric discharge device respectively of high-tension fuse, first zinc oxide arrester, one end of second zinc oxide arrester and the 3rd zinc oxide arrester, gap discharge device is connected fixed contact with the other end of the first zinc oxide arrester, the other end of the second zinc oxide arrester is connected with one end of protective resistance, the other end of protective circuit is connected with fixed contact, the other end of the 3rd zinc oxide arrester is connected with one end of thermistor, the other end of thermistor connects one end of temperature detect switch (TDS), the other end of temperature detect switch (TDS) connects fixed contact.
2. outdoor type primary cut-out according to claim 1, is characterized in that, described combined protection circuit comprises: switch, high-tension fuse, protective resistance and protection electric capacity C1; Wherein,
One end of switch is connected with moving contact; the other end of switch is connected with one end of high-tension fuse; the other end of high-tension fuse is connected with one end of the first protective resistance and the second protective resistance respectively; the other end of the first protective resistance connects one end of protection electric capacity C1; the other end of C1 connects fixed contact, and the other end of the second protective resistance connects fixed contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520016226.0U CN204332810U (en) | 2015-01-09 | 2015-01-09 | Outdoor type primary cut-out |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520016226.0U CN204332810U (en) | 2015-01-09 | 2015-01-09 | Outdoor type primary cut-out |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204332810U true CN204332810U (en) | 2015-05-13 |
Family
ID=53169136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520016226.0U Expired - Fee Related CN204332810U (en) | 2015-01-09 | 2015-01-09 | Outdoor type primary cut-out |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204332810U (en) |
-
2015
- 2015-01-09 CN CN201520016226.0U patent/CN204332810U/en not_active Expired - Fee Related
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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: 20150513 Termination date: 20160109 |