JPH0584001B2 - - Google Patents
Info
- Publication number
- JPH0584001B2 JPH0584001B2 JP58214187A JP21418783A JPH0584001B2 JP H0584001 B2 JPH0584001 B2 JP H0584001B2 JP 58214187 A JP58214187 A JP 58214187A JP 21418783 A JP21418783 A JP 21418783A JP H0584001 B2 JPH0584001 B2 JP H0584001B2
- Authority
- JP
- Japan
- Prior art keywords
- arc
- powder
- fluororesin
- added
- silicon carbide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000000463 material Substances 0.000 claims description 30
- 229920005989 resin Polymers 0.000 claims description 17
- 239000011347 resin Substances 0.000 claims description 17
- 229910052799 carbon Inorganic materials 0.000 claims description 15
- 239000000843 powder Substances 0.000 claims description 15
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 14
- 239000012212 insulator Substances 0.000 claims description 10
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 10
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 8
- 239000002344 surface layer Substances 0.000 claims description 8
- 150000001721 carbon Chemical group 0.000 claims 1
- 239000011812 mixed powder Substances 0.000 claims 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 10
- 238000009413 insulation Methods 0.000 description 5
- 239000000049 pigment Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000011256 inorganic filler Substances 0.000 description 4
- 229910003475 inorganic filler Inorganic materials 0.000 description 4
- 229910052581 Si3N4 Inorganic materials 0.000 description 3
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 229910052582 BN Inorganic materials 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- 229910000906 Bronze Inorganic materials 0.000 description 1
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- 229920001774 Perfluoroether Polymers 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- IRERQBUNZFJFGC-UHFFFAOYSA-L azure blue Chemical compound [Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[S-]S[S-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-] IRERQBUNZFJFGC-UHFFFAOYSA-L 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- 229910000423 chromium oxide Inorganic materials 0.000 description 1
- 229920006026 co-polymeric resin Polymers 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- HCDGVLDPFQMKDK-UHFFFAOYSA-N hexafluoropropylene Chemical group FC(F)=C(F)C(F)(F)F HCDGVLDPFQMKDK-UHFFFAOYSA-N 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Conductive Materials (AREA)
- Inorganic Insulating Materials (AREA)
- Circuit Breakers (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
Description
〔発明の利用分野〕
本発明は、フツ素樹脂を用いた耐アーク性材
料、及びそれを利用したSF6ガス絶縁遮断器など
の電気装置に関する。
〔発明の背景〕
遮断器などにあつては遮断時に発生するアーク
をSF6などのSF6ガスを用いて消弧しているが、
この場合、樹脂絶縁物で作られている消弧ノズル
はアークのエネルギー線を受けて熱分解を起し、
結果的に遮断性能や耐圧特性が低下するという欠
点があつた。この欠点をなくすために、特公昭53
−28639号公報により無機充てん材例えばブロン
ズなどの金属、酸化ケイ素、酸化チタン、酸化ア
ルミのごとき金属酸化物などの粉末を10〜80容量
％と多量に混入してなるフツ素樹脂絶縁物を用い
た遮断器が提供された。上記遮断器に用いられて
いる樹脂絶縁物は多量の無機充てん材を混入する
ことによりアークエネルギー線が遮へいされ、良
好な内部耐アーク性を有するものである。しかし
ながら、本発明者等の実験によると、300KV、
50KAの電流を遮断した場合、上記の遮断器では
遮断時に発生するアークにされされた樹脂絶縁物
表面の絶縁性が大幅に低下する、樹脂が溶融し、
飛散、消失するためそれ以降の遮断性能が著しく
低下するなどの欠点があることが明らかとなつ
た。更に、無機充てん材とフツ素樹脂との接着性
が極めて悪く機械的強度の点でも問題があつた。
〔発明の目的〕
本発明は以上の欠点を改良するためになされた
ものであり、その目的は、改良されたフツ素樹脂
系耐アーク性材料、及びそれを利用した表面並び
に内部耐アーク性に優れ、例えば遮断器などとし
て好適なSF6ガス絶縁電気装置を提供することに
ある。
〔発明の概要〕
本発明を概説すれば、本発明の第１の発明は耐
アーク性材料に関する発明であつて、カーボン及
び／又は炭化ケイ素を含む粉末を添加して、その
光反射が黒色濃度指数で0.15超〜0.6としたフツ
素樹脂からなることを特徴とする。
また、本発明の第２の発明は、SF6ガス絶縁電
気装置に関する発明であつて、アークにされされ
る雰囲気中に共存するSF6ガス絶縁物及び樹脂絶
縁物を含むSF6ガス絶縁電気装置において、前記
樹脂絶縁物のアークにされされる部分の少なくと
も表層部を、カーボン及び／又は炭化ケイ素を含
む粉末を添加して、その光反射が黒色濃度指数で
0.15超〜0.6としたフツ素樹脂で構成したことを
特徴とする。
本発明者等は、黒色が光の全波長域を吸収する
ことを耐アーク性材料のアークの光エネルギーに
対して応用する技術を取入れた結果、次のような
全く新しい事実を見出すことにより、本発明を完
成した。すなわち、フツ素樹脂に、黒色又は灰色
のカーボン及び／又は炭化ケイ素を含む粉末を少
量添加することにより、アークの光エネルギーを
適度に遮へい、反射、吸収する効果があり、その
場合、フツ素樹脂の黒色濃度指数を、0.15超〜
0.6とすることによりフツ素樹脂絶縁物の内部耐
アーク性、表面耐アーク性が共に向上するという
事実である。
そのため、前記従来品のように無機充てん材を
多量に添加することがないので、誘電率を低く抑
えることができ、高圧電気装置、例えば遮断電圧
の高い遮断器などへの適用が可能となる。
本明細書において、黒色濃度指数Ｄとは、標準
白色（酸化マグネシウム）の光反射量Ｗと、被測
定物の光反射量Ｂとから、下記式で求められる数
値をいう：
Ｄ＝log（Ｗ／Ｂ）
これは、純四フツ化エチレン樹脂絶縁物におい
てＤ＝0.21、またそれにカーボンを0.1重量％添
加した絶縁物でＤ＝1.62と測定される材料の黒色
度又は光の反射率を示す値である。
なお、純四フツ化エチレン樹脂は高温になると
透明になるので、上記値は本発明を説明する参考
値として示した。
本発明者等は、フツ素樹脂にカーボンを添加
し、その添加量を変えて実験した結果、添加量に
より次のような新たな効果が得られることを見出
した。
すなわち、多量に添加した場合、光エネルギー
の全波長域が材料の極く表面層でほとんど吸収さ
れ内部への透過がほとんどなく、内部耐アーク性
には優れた材料となるが、表面層の消耗が多い結
果となり、表面層の耐アーク性が劣る。カーボン
添加量を、例えば0.005重量％と微量にすると、
アークの光エネルギーの全波長域で反射と透過の
双方が適度に抑制されるため内部耐アーク性、表
面耐アーク性が共に優れた材料となる。
また上記の結果はフツ素樹脂のアークの光エネ
ルギーの全波長域を吸収するカーボンすなわち黒
色粉末を微量添加して材料表面層でのアークの光
エネルギーの吸収を適度に抑えて内部までアーク
の光エネルギーの一部が侵入すると共に反射も存
在するという従来にない考えを取入れたために得
られたものであり、例えば光のある波長域のみを
反射する、弁柄（赤色）、群青（青色）、酸化クロ
ム（）（緑色）などの有彩色顔料の１種を添加
したフツ素樹脂の材料ではアークの光エネルギー
の一部波長を反射及び透過し他は吸収するので吸
収しない波長のアークの光エネルギーは材料内部
に侵入しフツ素樹脂の重合を解除するので内部耐
アーク性が劣る。これを避けるには0.2〜0.5重量
％以上添加すればよいが、表面耐アーク性は劣
る。これは吸収するアークの光エネルギーがその
材料の表面層で吸収されるためである。すなわち
有彩色顔料の一種をフツ素樹脂に添加した材料で
は内部耐アーク性、表面耐アーク性共に優れた結
果は得られない。しかし、光の吸収波長域の異な
る顔料を２種以上フツ素樹脂に添加することによ
り、アークの光エネルギーの吸収、反射、侵入が
適当に抑えられて内部耐アーク性、表面耐アーク
性が共に優れた材料となる。
また、フツ素樹脂にカーボンを微量添加した材
料は灰色であり、フツ素樹脂に灰色粉末を微量添
加しても同様な結果が得られる。
本発明において、添加粉末の量が微少で、混合
にむらが生じる場合には、添加量を増量すると共
に白色粉末を加え黒色濃度指数を調整すると安定
した材料を得ることができる。
本発明を、以下添付図面に基づいて詳述する。
添付の第１図は、材料の黒色濃度指数（横軸）
と消耗量（表面耐アーク性）（ｇ／KA・Ｓ）（縦
軸）との関係を示したグラフである。第１図にお
いて、曲線の１はカーボンを添加した四フツ化エ
チレン樹脂、曲線２は炭化ケイ素を添加した四フ
ツ化エチレン樹脂、３は窒化ケイ素を添加した四
フツ化エチレン樹脂である。これらの添加剤はカ
ーボン、炭化ケイ素、窒化ケイ素の順に黒色度が
薄くなり、窒化ケイ素の場合、１〜10重量％添加
した材料の黒色濃度指数は0.22〜0.34でほとんど
変化がなく、消耗量も微少変化であるが、炭化ケ
イ素又はカーボンを添加した材料では、添加量に
よつて黒色濃度指数が変化し、消耗量も変化して
いる。
この結果により、黒色濃度指数が0.6超におい
ては消耗量が急増し、0.6以下では消耗量変化が
わずかとなつているので、フツ素樹脂にカーボン
及び／又は炭化ケイ素を含む粉末を添加した材料
においては、その材料の黒色濃度指数を0.6以下
とすることにより、表面耐アーク性に優れた材料
を得ることができるといえる。他方、黒色濃度指
数を極度に小さくすると、アークにされされた材
料の表面層及び表面に近い内部に、四フツ化エチ
レン樹脂でみられると同様なクレータが発生する
ことを実験により確認した。その値は、添加材の
種類によらず0.15付近に限界がある。すなわち材
料の黒色濃度指数を0.15超とすることにより内部
耐アーク性にも優れた結果を得た。
本発明で使用可能な白色粉末の例としては、
GKナンバー21〜28の顔料及び窒化ホウ素などが
挙げられる。
本発明において、フツ素樹脂とは、フツ素を含
有するオレフイン重合体を包含するものを意味す
るものであり、その例には、四フツ化エチレン樹
脂、四フツ化エチレンと六フツ化プロピレンとの
共重合体樹脂、パーフルオロアルコキシ基をもつ
四フツ化エチレン樹脂などが挙げられる。
本発明のSF6ガス絶縁電気装置の１例としては
第２図に示すような遮断器がある。すなわち第２
図は、SF6ガス遮断器の断面概略図である。第２
図において、符号１はSF6ガス、２は消弧ノズル
でSF6ガス１をアークに導くためのもの、３は固
定接触子、４は可動接触子、５はガス圧縮装置で
SF6ガスをアークに吹付けるためのものを意味す
る。
２の消弧ノズルは通常フツ素樹脂で作られてお
り、本発明では、それを本発明によるフツ素樹脂
で構成する。
本発明によれば、内部及び表面共に耐アーク性
に優れた耐アーク性材料を提供することができ
る。
〔発明の実施例〕
以下、本発明を実施例により更に具体的に説明
するが、本発明はこれらに限定されない。
実施例 １
第２図に示した遮断器において、消弧ノズルと
して下記表１に示す顔料又は粉末を添加した四フ
ツ化エチレン樹脂製のものを用い、遮断試験を行
つた。その結果を表１に示す。
[Field of Application of the Invention] The present invention relates to an arc-resistant material using a fluororesin and an electrical device such as an SF 6 gas insulation circuit breaker using the same. [Background of the Invention] In circuit breakers, etc., the arc that occurs when the circuit is interrupted is extinguished using SF 6 gas such as SF 6 .
In this case, the arc extinguishing nozzle made of resin insulator receives the energy rays of the arc and causes thermal decomposition.
As a result, there was a drawback that the interrupting performance and withstand voltage characteristics deteriorated. In order to eliminate this drawback,
According to Publication No. 28639, a fluororesin insulator containing a large amount of 10 to 80% by volume of an inorganic filler, such as a metal such as bronze, or a powder of metal oxide such as silicon oxide, titanium oxide, or aluminum oxide, is used. A circuit breaker was provided. The resin insulator used in the above-mentioned circuit breaker contains a large amount of inorganic filler to block arc energy rays and has good internal arc resistance. However, according to the experiments of the present inventors, 300KV,
When a current of 50 KA is interrupted, the insulation properties of the resin insulation surface will be significantly reduced due to the arc generated when the circuit breaker is interrupted, and the resin will melt.
It has become clear that there are drawbacks such as scattering and disappearance, resulting in a significant deterioration in subsequent interrupting performance. Furthermore, the adhesiveness between the inorganic filler and the fluororesin was extremely poor, and there was also a problem in terms of mechanical strength. [Object of the Invention] The present invention was made to improve the above-mentioned drawbacks, and its purpose is to provide an improved fluororesin-based arc-resistant material, and surface and internal arc-resistant materials using the same. An object of the present invention is to provide an SF 6 gas insulated electrical device which is excellent and suitable as, for example, a circuit breaker. [Summary of the Invention] To summarize the present invention, the first invention relates to an arc-resistant material, in which powder containing carbon and/or silicon carbide is added, and the light reflection is reduced to a black density. It is characterized by being made of fluororesin with an index of over 0.15 to 0.6. Further, a second invention of the present invention is an invention relating to an SF 6 gas insulated electrical device, which includes an SF 6 gas insulator and a resin insulator coexisting in an atmosphere to be arced. In this step, powder containing carbon and/or silicon carbide is added to at least the surface layer of the portion of the resin insulator to be arced, so that the light reflection is a black density index.
It is characterized by being made of fluororesin with a molecular weight of over 0.15 to 0.6. The inventors of the present invention have discovered the following completely new facts as a result of applying a technology that applies the fact that black color absorbs the entire wavelength range of light to the light energy of the arc of an arc-resistant material. The invention has been completed. In other words, by adding a small amount of black or gray powder containing carbon and/or silicon carbide to the fluororesin, it has the effect of appropriately shielding, reflecting, and absorbing the light energy of the arc. The black density index of more than 0.15
The fact is that by setting the value to 0.6, both the internal arc resistance and the surface arc resistance of the fluororesin insulator are improved. Therefore, unlike the conventional products, a large amount of inorganic filler is not added, so the dielectric constant can be kept low, and it can be applied to high-voltage electrical devices, such as circuit breakers with high breaking voltage. In this specification, the black density index D refers to a value obtained from the light reflection amount W of standard white (magnesium oxide) and the light reflection amount B of the object to be measured using the following formula: D=log(W /B) This is a value indicating the blackness or light reflectance of a material measured as D = 0.21 for pure tetrafluoroethylene resin insulation, and D = 1.62 for insulation with 0.1% by weight of carbon added. It is. Note that since pure tetrafluoroethylene resin becomes transparent at high temperatures, the above values are shown as reference values for explaining the present invention. The inventors of the present invention added carbon to a fluororesin, and as a result of experimenting with varying the amount added, discovered that the following new effects could be obtained depending on the amount added. In other words, when a large amount is added, most of the entire wavelength range of light energy is absorbed in the very surface layer of the material, and there is almost no penetration into the interior, resulting in a material with excellent internal arc resistance, but the surface layer wears out. As a result, the arc resistance of the surface layer is poor. If the amount of carbon added is as small as 0.005% by weight,
Since both reflection and transmission are moderately suppressed in the entire wavelength range of the light energy of the arc, the material has excellent internal arc resistance and surface arc resistance. The above results also show that by adding a small amount of carbon, that is, black powder, which absorbs the entire wavelength range of the arc light energy of the fluororesin, the absorption of the arc light energy at the surface layer of the material can be moderately suppressed, allowing the arc light to penetrate into the interior. This was achieved by incorporating the unconventional idea that a portion of energy enters and also reflects. For example, Bengara (red), Ultramarine (blue), which reflect only a certain wavelength range of light, Fluororesin materials containing one type of chromatic pigment such as chromium oxide (green) reflect and transmit some of the wavelengths of the arc's light energy and absorb others, so the arc's light energy of the wavelengths that are not absorbed enters into the material and depolymerizes the fluororesin, resulting in poor internal arc resistance. To avoid this, it is sufficient to add 0.2 to 0.5% by weight or more, but the surface arc resistance is poor. This is because the absorbing arc light energy is absorbed by the surface layer of the material. That is, a material in which a type of chromatic pigment is added to a fluororesin cannot provide excellent results in both internal arc resistance and surface arc resistance. However, by adding two or more types of pigments with different light absorption wavelength ranges to the fluororesin, the absorption, reflection, and penetration of arc light energy can be appropriately suppressed, improving both internal arc resistance and surface arc resistance. It is an excellent material. Further, a material obtained by adding a small amount of carbon to a fluororesin has a gray color, and a similar result can be obtained by adding a small amount of gray powder to a fluororesin. In the present invention, if the amount of added powder is small and uneven mixing occurs, a stable material can be obtained by increasing the amount added and adding white powder to adjust the black density index. The present invention will be explained in detail below based on the accompanying drawings. Attached Figure 1 shows the black density index (horizontal axis) of the material.
It is a graph showing the relationship between the amount of wear (surface arc resistance) (g/KA·S) (vertical axis). In FIG. 1, curve 1 is a tetrafluoroethylene resin to which carbon is added, curve 2 is a tetrafluoroethylene resin to which silicon carbide is added, and curve 3 is a tetrafluoroethylene resin to which silicon nitride is added. The blackness of these additives decreases in the order of carbon, silicon carbide, and silicon nitride. In the case of silicon nitride, the black density index of materials added from 1 to 10% by weight remains almost unchanged at 0.22 to 0.34, and the amount of consumption also decreases. Although the changes are minute, in materials to which silicon carbide or carbon is added, the black density index changes depending on the amount added, and the amount of consumption also changes. This result shows that when the black density index exceeds 0.6, the amount of consumption increases rapidly, and when the black density index is less than 0.6, the amount of consumption changes only slightly. It can be said that a material with excellent surface arc resistance can be obtained by controlling the black density index of the material to 0.6 or less. On the other hand, it has been experimentally confirmed that when the black density index is made extremely small, craters similar to those seen with tetrafluoroethylene resin are generated in the surface layer of the arced material and in the interior near the surface. Its value has a limit around 0.15, regardless of the type of additive. In other words, by setting the black density index of the material to over 0.15, excellent internal arc resistance was obtained. Examples of white powders that can be used in the present invention include:
Examples include pigments with GK numbers 21 to 28 and boron nitride. In the present invention, the term fluororesin refers to olefin polymers containing fluorine; examples thereof include tetrafluoroethylene resin, tetrafluoroethylene, hexafluoropropylene, and copolymer resins, and tetrafluoroethylene resins having perfluoroalkoxy groups. An example of the SF 6 gas insulated electrical device of the present invention is a circuit breaker as shown in FIG. That is, the second
The figure is a cross-sectional schematic diagram of an SF 6 gas circuit breaker. Second
In the figure, 1 is SF 6 gas, 2 is an arc extinguishing nozzle for guiding SF 6 gas 1 to the arc, 3 is a fixed contact, 4 is a movable contact, and 5 is a gas compression device.
Means something for spraying SF 6 gas into the arc. The arc extinguishing nozzle No. 2 is normally made of fluororesin, and in the present invention, it is made of the fluororesin according to the present invention. According to the present invention, it is possible to provide an arc-resistant material that has excellent arc resistance both inside and on the surface. [Examples of the Invention] Hereinafter, the present invention will be explained in more detail with reference to Examples, but the present invention is not limited thereto. Example 1 In the circuit breaker shown in FIG. 2, an interrupting test was conducted using an arc extinguishing nozzle made of tetrafluoroethylene resin to which pigments or powders shown in Table 1 below were added. The results are shown in Table 1.
以上説明したように、本発明によれば、内部耐
アーク性及び表面耐アーク性が共に優れ、機械的
強度にも耐え得る耐アーク性材料を提供すること
ができ、高電圧大電流用の遮断器の消弧ノズル、
又は高電圧用避雷器の消弧板などに適用すると、
顕著な効果が奏せられる。
As explained above, according to the present invention, it is possible to provide an arc-resistant material that has excellent internal arc resistance and surface arc resistance, and can withstand mechanical strength. arc extinguishing nozzle of the vessel,
Or when applied to arc extinguishing plates of high voltage lightning arresters, etc.
A remarkable effect can be achieved.
第１図は材料の黒色濃度指数と消耗量との関係
を示したグラフ、第２図は本発明装置の１例であ
るSF6ガス遮断器の断面概略図
１：SF6ガス、２：消弧ノズル、３：固定接触
子、４：可動接触子、５：ガス圧縮装置。
Figure 1 is a graph showing the relationship between the black density index of the material and the amount of consumption. Figure 2 is a cross-sectional schematic diagram of an SF 6 gas circuit breaker, which is an example of the device of the present invention. 1: SF 6 gas, 2: Extinguisher. Arc nozzle, 3: fixed contact, 4: movable contact, 5: gas compression device.
Claims (1)
添加して、その光反射が黒色濃度指数で0.15超〜
0.6としたフツ素樹脂からなることを特徴とする
耐アーク性材料。 ２ 該粉末が、カーボン又は炭化ケイ素の粉末で
ある特許請求の範囲第１項記載の耐アーク性材
料。 ３ 該粉末が、カーボン及び／又は炭化ケイ素の
粉末と白色粉末との混合粉末である特許請求の範
囲第１項記載の耐アーク性材料。 ４ アークにさらされる雰囲気中に共存するSF6
ガス絶縁物及び樹脂絶縁物を含むSF6ガス絶縁電
気装置において、前記樹脂絶縁物のアークにさら
される部分の少なくとも表層部を、カーボン及
び／又は炭化ケイ素を含む粉末を添加して、その
光反射が黒色濃度指数で0.15超〜0.6としたフツ
素樹脂で構成したことを特徴とするSF6ガス絶縁
電気装置。[Claims] 1. Powder containing carbon and/or silicon carbide is added so that the light reflection is greater than 0.15 in terms of black density index.
An arc-resistant material characterized by being made of fluororesin with a hardness of 0.6. 2. The arc-resistant material according to claim 1, wherein the powder is carbon or silicon carbide powder. 3. The arc-resistant material according to claim 1, wherein the powder is a mixed powder of carbon and/or silicon carbide powder and white powder. 4 SF coexisting in atmosphere exposed to arc 6
In an SF 6 gas insulated electrical device including a gas insulator and a resin insulator, at least the surface layer of the portion of the resin insulator exposed to the arc is added with powder containing carbon and/or silicon carbide to improve its light reflection. An SF 6 gas insulated electrical device characterized in that it is constructed of a fluororesin having a black density index of more than 0.15 to 0.6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21418783A JPS60107203A (en) | 1983-11-16 | 1983-11-16 | Arc resistant material and its utilization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21418783A JPS60107203A (en) | 1983-11-16 | 1983-11-16 | Arc resistant material and its utilization |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60107203A JPS60107203A (en) | 1985-06-12 |
| JPH0584001B2 true JPH0584001B2 (en) | 1993-11-30 |
Family
ID=16651675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21418783A Granted JPS60107203A (en) | 1983-11-16 | 1983-11-16 | Arc resistant material and its utilization |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60107203A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4634259B2 (en) * | 2005-09-08 | 2011-02-16 | 株式会社日立製作所 | Puffer type gas circuit breaker |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4858373A (en) * | 1971-11-26 | 1973-08-16 | ||
| JPS58178931A (en) * | 1982-04-14 | 1983-10-20 | 株式会社日立製作所 | Gas insulated electric device |
| JPS58186117A (en) * | 1982-04-26 | 1983-10-31 | 株式会社日立製作所 | Breaker |
| JPS5933723A (en) * | 1982-08-19 | 1984-02-23 | 三菱電機株式会社 | Gas breaker |
-
1983
- 1983-11-16 JP JP21418783A patent/JPS60107203A/en active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4858373A (en) * | 1971-11-26 | 1973-08-16 | ||
| JPS58178931A (en) * | 1982-04-14 | 1983-10-20 | 株式会社日立製作所 | Gas insulated electric device |
| JPS58186117A (en) * | 1982-04-26 | 1983-10-31 | 株式会社日立製作所 | Breaker |
| JPS5933723A (en) * | 1982-08-19 | 1984-02-23 | 三菱電機株式会社 | Gas breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60107203A (en) | 1985-06-12 |
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