CN102231504A - Totally-enclosed bus duct - Google Patents
Totally-enclosed bus duct Download PDFInfo
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- CN102231504A CN102231504A CN2011100836058A CN201110083605A CN102231504A CN 102231504 A CN102231504 A CN 102231504A CN 2011100836058 A CN2011100836058 A CN 2011100836058A CN 201110083605 A CN201110083605 A CN 201110083605A CN 102231504 A CN102231504 A CN 102231504A
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- bus duct
- totally
- resin
- bus
- enclosed bus
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Abstract
The invention relates to a totally-enclosed bus duct. The totally-enclosed bus duct is integrally poured by adopting polyetherimide resin which has a thermal expansion coefficient approach to that of copper and still keeps a high insulating property at the temperature of 100 DEG C. Simultaneously, electric clearance and a creepage distance are not required to be taken into account in a duct body.
Description
Technical field
The present invention relates to the integrated poured totally-enclosed bus duct of totally-enclosed bus duct, particularly resin.
Background technology
Because the distance that bus is at interval certain, comprise between bus that connector all uses resin-cast, even there is burr in bus, can the bursting resin insulating barrier and be short-circuited yet; Because bus duct does not have shell, therefore the short circuit between the phase ground can not take place.Be not that ordinary resin just can be used for bus duct, through evidence, ordinary resin can cause insulation resistance sharply to descend, and the working temperature of bus duct can reach 100 ℃ under 80 ℃ of temperature.High temperature causes the conductivity of existence to pollute thus, perhaps because condensation makes dry non-conductive pollution become the conductivity pollution.Because electro-conductive dust or sleet cause persistent pollution.Need provide a kind of and still keep good insulation property up to 100 degrees centigrade, need not consider electric clearance and creepage distance in the cell body simultaneously in temperature.
Summary of the invention
In order to solve above-mentioned drawback, the invention provides a kind of totally-enclosed bus duct, comprise: conductor and the ground wire that links to each other with described conductor, the connecting portion of described conductor is provided with the copper layer, the contact site of described copper layer is a copper conductor, it is characterized in that: described conductor, connecting portion, contact site are undertaken integrated poured by polyetherimide resin.Wherein, feature also is, bus duct is that its insulation resistance still can reach more than the 100M Ω under 100 ℃ the situation in ambient temperature
Embodiment
Resin-cast does not have the totally-enclosed bus duct of shell, has the advantage of intensive and double insulation bus duct, between bus with the very good resin of insulation property as insulator, it is withstand voltage to reach more than the 5000V; Because the distance that bus is at interval certain, comprise between bus that connector all uses resin-cast, even there is burr in bus, can the bursting resin insulating barrier and be short-circuited yet; Because bus duct does not have shell, therefore the short circuit between the phase ground can not take place.Be not that ordinary resin just can be used for bus duct, through evidence, ordinary resin can cause insulation resistance sharply to descend, and the working temperature of bus duct can reach 100 ℃ under 80 ℃ of temperature.The present invention adopts the Polyetherimide compound resin pouring bus groove of function admirable, even temperature up to 100 ℃, still can keep good insulation property.The coefficient of linear expansion of this resin and copper are very approaching, add that this bus duct does not have metal shell, therefore do not have the possibility that produces short circuit between phase fault or the phase ground because of linear expansion is different.Owing to be totally-enclosed, meet shell protection grade IP68 requirement, moisture can not enter in the bus duct, and this bus duct can be soaked use for a long time in water, even can be in the medium-term and long-term use of corrosive environment.The resin that this bus duct adopts does not ftracture when can be lower than-50 ℃, can also stand impact resistance more than 6 joules, therefore need not add metal shell.Bus of the present invention has passed through the fire-resistant requirement of category-A of GB12666.6-1990, even burnt 90 minutes under 950 ℃～1000 ℃ flame, circuit can not interrupt yet, and therefore, the polyetherimide resin pouring bus groove can be used as fireproof bus duct and uses.Polyetherimide resin pour into a mould totally-enclosed bus duct have fire-resistant, waterproof, overload capacity strong, alternate can short circuit etc. advantage, polyetherimide resin is poured into a mould the fire resistance of totally-enclosed bus duct: adopt flame-retardant insulating material, the fire resistance period that meets GB12666.6-1990, the integrality that can keep circuit in flame is more than 90 minutes; The shell protection grade reaches IP68, can be dipped in for a long time in the water, can resist hydrant to its fierce water spray; Take integrated pouredly, make not have the gap in the bus duct; Adopt nontoxic insulating material,, guarantee personnel's safety even in flame, also can not give out toxic gas; Need not adopt the heat-insulation and heat-preservation material, in normal operation circumstances, have good heat sinking function.The box hat of the corrosion resistant performance box hat bus duct of Polyetherimide is vulnerable to acid, alkali corrodes, the long-term erosion that can not bear rain, snow.Therefore, the box hat bus duct can not be used for the open air, more can not be used for corrosion-prone environment.The totally-enclosed bus duct of resin-cast is the bus duct of no metal shell, and extraordinary compound resin can also stand 6 joules external impacts except playing insulating effect, therefore need not protect with box hat.Ordinary resin can not stand to be low to moderate-50 ℃ ambient temperature, can ftracture during low temperature.The compound resin that the present invention adopts can be low to moderate under-50 ℃ the ambient temperature for a long time works.Bus duct of the present invention is totally-enclosed, comprises that promptly the connector of bus duct is all used resin-cast, therefore, and can long-time running under adverse circumstances such as acid, alkali.The insulation property of the present invention bus duct of resin as insulating material, its insulation property require that to compare requirement higher with dry-type transformer table 1 class of pollution implication, because operating voltage is 380V between the bus of bus duct, and the voltage between layers of dry-type transformer has only several volts at most.Ordinary resin insulation resistance at normal temperatures can reach requirement, but when high temperature, for example when 100 ℃ working temperature, its insulation resistance can sharply descend.The temperature rise of bus duct adds that 100 ℃ situation can appear in ambient temperature, even it is higher, at this moment, the insulation resistance of bus duct must be not less than 20M Ω, if adopt ordinary resin, insulation resistance can drop to and has only several megaohms, and bus duct of the present invention is that its insulation resistance still can reach more than the 100M Ω under 100 ℃ the situation in ambient temperature.The security performance of security performance bus duct of the present invention mainly contains: anti-phase fault.Concentration bus duct is for preventing phase fault, and bus is forbidden burr is arranged, added and forbidden man-hour to have rubbish to sneak in the housing, add thick dielectric layer, but can not prevent the possibility that short circuit occurs fully.Do not allow stack effect during vertical run.There are the possibility of short circuit hardly in air type bus duct or double insulation bus duct, but have stack effect.The insulation distance that 15mm is arranged between the bus of bus duct of the present invention, the bus burr can not cause short circuit, and therefore, its fail safe is much larger than concentration bus duct.There is not the air gap in bus duct of the present invention, and all bus is integral with resin-cast, does not therefore have stack effect and heat conduction gap.Performance index (1) environment for use temperature can the people can short stay ambient temperature under use for a long time, as temperature height to 80 ℃, be low to moderate long-term work under-40 ℃ the ambient temperature.(2) atmospheric conditions can be indoors, long-term work under outdoor any atmospheric conditions, desertification dust storm, uprising rain, anticorrosive.(3) height above sea level bus duct body is not limited by height above sea level.(4) class of pollution bus duct body can be in the medium-term and long-term use of the environment that pollutes highest ranking 4.(5) allow the long-term place that blast or fire hazard are arranged of using under particular surroundings; The place that chemical contamination is arranged.(6) nominal parameter rated current: the rated current of bus duct is meant that bus duct passes to this electric current, and the bus duct temperature rise is no more than 60K.Insulation property: the insulation resistance of every joint bus duct is not less than 1000M Ω.Shell protection grade: IP68.7 can be dipped in the water for a long time, can resist 6 joules of mechanical shocks.Fire resistance: reach 90 minutes that GB12666.6-1999 stipulates.Need not consider electric clearance and creepage distance in the cell body.
The invention is not restricted to the foregoing description; in design scope of the present invention; the description of book according to the above description, those of ordinary skill in the art also can make some conspicuous changes, but these changes all should fall within the protection range of claim of the present invention.
Claims (2)
1. totally-enclosed bus duct, comprise: conductor and the ground wire that links to each other with described conductor, the connecting portion of described conductor is provided with the copper layer, and the contact site of described copper layer is a copper conductor, it is characterized in that: described conductor, connecting portion, contact site are undertaken integrated poured by polyetherimide resin.
2. according to the described totally-enclosed bus duct of claim 1, it is characterized in that: be that its insulation resistance still can reach more than the 100M Ω under 100 ℃ the situation in ambient temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100836058A CN102231504A (en) | 2011-04-01 | 2011-04-01 | Totally-enclosed bus duct |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100836058A CN102231504A (en) | 2011-04-01 | 2011-04-01 | Totally-enclosed bus duct |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102231504A true CN102231504A (en) | 2011-11-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100836058A Pending CN102231504A (en) | 2011-04-01 | 2011-04-01 | Totally-enclosed bus duct |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102231504A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5854445A (en) * | 1996-08-06 | 1998-12-29 | General Electric Company | Thermally efficient power busway system with integral clamping mechanism |
| CN2454962Y (en) * | 2000-09-04 | 2001-10-17 | 无锡市华辉电力设备有限公司 | Solid bus-slot |
| CN201038683Y (en) * | 2007-04-24 | 2008-03-19 | 上海邦盛防电避雷技术有限公司 | Wholly sealed insulation glue casting aluminum busbar slot |
| CN101536116A (en) * | 2006-09-14 | 2009-09-16 | 阿海珐T&D有限公司 | Insulating support for a high-voltage or medium-voltage device, and device comprising it |
-
2011
- 2011-04-01 CN CN2011100836058A patent/CN102231504A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5854445A (en) * | 1996-08-06 | 1998-12-29 | General Electric Company | Thermally efficient power busway system with integral clamping mechanism |
| CN2454962Y (en) * | 2000-09-04 | 2001-10-17 | 无锡市华辉电力设备有限公司 | Solid bus-slot |
| CN101536116A (en) * | 2006-09-14 | 2009-09-16 | 阿海珐T&D有限公司 | Insulating support for a high-voltage or medium-voltage device, and device comprising it |
| CN201038683Y (en) * | 2007-04-24 | 2008-03-19 | 上海邦盛防电避雷技术有限公司 | Wholly sealed insulation glue casting aluminum busbar slot |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20111102 |