CN203103038U - High-resistance neutral grounding resistance device - Google Patents
High-resistance neutral grounding resistance device Download PDFInfo
- Publication number
- CN203103038U CN203103038U CN 201320065601 CN201320065601U CN203103038U CN 203103038 U CN203103038 U CN 203103038U CN 201320065601 CN201320065601 CN 201320065601 CN 201320065601 U CN201320065601 U CN 201320065601U CN 203103038 U CN203103038 U CN 203103038U
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- Prior art keywords
- resistance
- resistance device
- resistor disc
- high resistant
- resistant neutral
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Abstract
The utility model provides a high-resistance neutral grounding resistance device. The high-resistance neutral grounding resistance device comprises a supporting plate (1), a supporting rod (2), resistance pieces (3), a lightening protection device (4) and a transformer (5), wherein the grounding resistance device comprises a resistor and the transformer (5) and is provided with the lightening protection device (4); a plurality of groups of resistance pieces (3) are arranged to form a resistor, and are arranged on the supporting rod (2); and the lightening protection device (4), the resistance pieces (3) and the transformer (5) are matched for working. The high-resistance neutral grounding resistance device provided by the utility model has the advantages that due to adoption of a combined type stainless steel resistor, not only can the resistance value or the current flux be freely combined, but also the electric connection structure and the natural radiating structure are good, normal working under all weather and full state is guaranteed, and the hazards caused by disconnection of the grounding resistance connecting structure in the prior art is overcome; and the structure is simple, and the working is stable, safe and reliable.
Description
Technical field
The utility model belongs to electrical equipment technical field, is specifically related to a kind of high resistant neutral resistance device.
Background technology
Down-hole, mine geographical environment is special, and condition of work is abominable, and down-hole high pressure electric power system complexity is support equipment and personal safety, has a lead or any in the electric power system at least through grounding through resistance.The high resistance grounding system, the electric current that generally adopts earth fault is less than 10A.The system of low resistance earthing is for obtaining the required enough electric currents of fast selective relaying protection, and generally adopting earth fault current is 100A～1000A.The earth resistance in more mine adopts the carborundum manufacturing; and it is intensive cylindric that shape is; multi-disc disc carborundum is by the scolding tin welding that closely superposes; middle scolding tin articulamentum is because the scolding tin fusing point is low; easily fusing behind TRANSIENT HIGH TEMPERATURE or higher temperature, resistance diminishes and does not have the effect of protection equipment and personal safety.For this reason, develop and a kind ofly to be easy to processing and manufacturing and safe and reliable neutral resistance device has crucial meaning.
Summary of the invention
The purpose of this utility model is to provide a kind of processing and manufacturing and safe and reliable neutral resistance device of being easy to.
The purpose of this utility model realizes like this, comprise supporting bracket, support bar, resistor disc, lightning arrester and instrument transformer, described earth resistance device comprises resistance and instrument transformer, described earth resistance device is provided with lightning arrester, more described resistor disc is organized to arrange formation resistance is set, described resistor disc is arranged on the support bar, and described lightning arrester, resistor disc and instrument transformer work cooperate.
The utility model adopts assembled steel resistance, not only but independent assortment changes resistance or current flux, and excellent electrical property syndeton and the radiator structure that has naturally, guaranteed that resistance is round-the-clock down, the operate as normal under the total state, overcome prior art earth resistance syndeton and lost the harm that connection is brought, the utility model is simple in structure, prepares easy, working stability, safe and reliable helps the insulation safety and the power supply reliability of electric equipment.
Description of drawings
Fig. 1 concerns schematic diagram for the utility model overall structure;
Fig. 2 is the operating state and the interlock circuit graph of a relation of the utility model, and wherein Rn is the resistance that resistor disc is formed;
Among the figure: 1-supporting bracket, 2-support bar, 3-resistor disc, 4-lightning arrester, 5-instrument transformer, 6-insulator.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing, but never in any form the utility model is limited, and any conversion based on the utility model training centre is done all falls into protection range of the present utility model.
As shown in Figure 1, the utility model comprises supporting bracket 1, support bar 2, resistor disc 3, lightning arrester 4 and instrument transformer 5, described earth resistance device comprises resistance and instrument transformer 5, described earth resistance device is provided with lightning arrester 4, described resistor disc more than 3 groups are arranged formation resistance are set, described resistor disc 3 is arranged on the support bar 2, and described lightning arrester 4, resistor disc 3 and instrument transformer 5 work cooperate.
Described resistor disc 3 is arranged and is arranged between two support bars that be arranged in parallel 2.
Described resistor disc 3 is set in parallel between two support bars 2.
Described resistor disc 3 is 30 ~ 60 ° of angles with working face to be arranged, and is arranged in parallel between the monolithic.
Be provided with the gap between the described parallel resistance sheet 3.
Described gap is the heat radiation air-gap.
Described gap is provided with the high heat conductive insulating medium therebetween for heat radiation filler crack.
Described resistor disc 3 is high pressure resistant, high temperature stainless steel resistance.
Change resistance or operating current by series connection and/or combination in parallel between the described resistor disc 3.
The operation principle of the present utility model and the course of work:
The utility model adopts assembled steel resistance, not only but independent assortment changes resistance or current flux, and excellent electrical property syndeton and the radiator structure that has naturally, guaranteed that resistance is round-the-clock down, the operate as normal under the total state, overcome prior art earth resistance syndeton and lost the harm that connection is brought.Resistance is the sheet electric resistance of stainless, adopts the electric resistance of stainless laminated structure, certain interval is arranged, the insulation safety and the power supply reliability of being convenient to dispel the heat and helping electric equipment between laminated structure.The work and the safety of persons of the lightning arrester that installs additional simultaneously equipment when improving thundery sky.Curtage dropped to safety margin when instrument transformer made thunderbolt, the safety of support equipment and prolongation service life of structure.
Claims (9)
1. high resistant neutral resistance device, comprise supporting bracket (1), support bar (2), resistor disc (3), lightning arrester (4) and instrument transformer (5), it is characterized in that: described earth resistance device comprises resistance and instrument transformer (5), described earth resistance device is provided with lightning arrester (4), the many groups of described resistor disc (3) are arranged formation resistance are set, described resistor disc (3) is arranged on the support bar (2), and described lightning arrester (4), resistor disc (3) and instrument transformer (5) work cooperate.
2. high resistant neutral resistance device according to claim 1 is characterized in that: described resistor disc (3) is arranged and is arranged between two support bars that be arranged in parallel (2).
3. high resistant neutral resistance device according to claim 2 is characterized in that: described resistor disc (3) is set in parallel between two support bars (2).
4. high resistant neutral resistance device according to claim 2 is characterized in that: described resistor disc (3) is 30 ~ 60 ° of angles with working face to be arranged, and is arranged in parallel between the monolithic.
5. high resistant neutral resistance device according to claim 3 is characterized in that: be provided with the gap between the described parallel resistance sheet (3).
6. high resistant neutral resistance device according to claim 5 is characterized in that: described gap is the heat radiation air-gap.
7. high resistant neutral resistance device according to claim 5 is characterized in that: described gap is provided with the high heat conductive insulating medium therebetween for heat radiation filler crack.
8. high resistant neutral resistance device according to claim 1 is characterized in that: described resistor disc (3) is high pressure resistant, high temperature stainless steel resistance.
9. novel high resistant neutral resistance device according to claim 1 is characterized in that: change resistance or operating current by series connection and/or combination in parallel between the described resistor disc (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320065601 CN203103038U (en) | 2013-02-05 | 2013-02-05 | High-resistance neutral grounding resistance device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320065601 CN203103038U (en) | 2013-02-05 | 2013-02-05 | High-resistance neutral grounding resistance device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203103038U true CN203103038U (en) | 2013-07-31 |
Family
ID=48854425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320065601 Expired - Lifetime CN203103038U (en) | 2013-02-05 | 2013-02-05 | High-resistance neutral grounding resistance device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203103038U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109801766A (en) * | 2017-11-16 | 2019-05-24 | 核工业西南物理研究院 | A kind of stainless steel stepwise adjustable resistance and modulated brake resistance |
| CN115548886A (en) * | 2022-09-28 | 2022-12-30 | 江苏泽宇电力设计有限公司 | Auxiliary detection type small-resistance grounding resistance cabinet |
-
2013
- 2013-02-05 CN CN 201320065601 patent/CN203103038U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109801766A (en) * | 2017-11-16 | 2019-05-24 | 核工业西南物理研究院 | A kind of stainless steel stepwise adjustable resistance and modulated brake resistance |
| CN109801766B (en) * | 2017-11-16 | 2024-04-09 | 核工业西南物理研究院 | Stainless steel sectional adjustable resistor and adjustable resistor |
| CN115548886A (en) * | 2022-09-28 | 2022-12-30 | 江苏泽宇电力设计有限公司 | Auxiliary detection type small-resistance grounding resistance cabinet |
| CN115548886B (en) * | 2022-09-28 | 2024-03-08 | 江苏泽宇电力设计有限公司 | Auxiliary detection type small-resistance grounding resistance cabinet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130731 |
|
| CX01 | Expiry of patent term |