JPH0329229A - Sf6 gas breaker - Google Patents
Sf6 gas breakerInfo
- Publication number
- JPH0329229A JPH0329229A JP13951190A JP13951190A JPH0329229A JP H0329229 A JPH0329229 A JP H0329229A JP 13951190 A JP13951190 A JP 13951190A JP 13951190 A JP13951190 A JP 13951190A JP H0329229 A JPH0329229 A JP H0329229A
- Authority
- JP
- Japan
- Prior art keywords
- nozzle
- fluororesin
- arc
- resin
- ethylene tetrafluoride
- 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.)
- Granted
Links
- 239000011347 resin Substances 0.000 claims abstract description 31
- 229920005989 resin Polymers 0.000 claims abstract description 31
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910052582 BN Inorganic materials 0.000 claims abstract description 18
- 239000000945 filler Substances 0.000 claims abstract description 18
- 239000012212 insulator Substances 0.000 claims abstract description 15
- 239000000843 powder Substances 0.000 claims abstract description 13
- 230000006866 deterioration Effects 0.000 claims abstract description 7
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 claims description 13
- 238000005507 spraying Methods 0.000 claims description 3
- 238000013459 approach Methods 0.000 claims description 2
- 238000002844 melting Methods 0.000 abstract description 11
- 230000008018 melting Effects 0.000 abstract description 11
- 239000000203 mixture Substances 0.000 abstract description 8
- 229920001577 copolymer Polymers 0.000 abstract description 3
- HCDGVLDPFQMKDK-UHFFFAOYSA-N hexafluoropropylene Chemical compound FC(F)=C(F)C(F)(F)F HCDGVLDPFQMKDK-UHFFFAOYSA-N 0.000 abstract description 3
- PYVHTIWHNXTVPF-UHFFFAOYSA-N F.F.F.F.C=C Chemical compound F.F.F.F.C=C PYVHTIWHNXTVPF-UHFFFAOYSA-N 0.000 abstract 5
- 238000005299 abrasion Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 9
- 230000003595 spectral effect Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 4
- 229910052731 fluorine Inorganic materials 0.000 description 4
- 239000011737 fluorine Substances 0.000 description 4
- 239000011256 inorganic filler Substances 0.000 description 3
- 229910003475 inorganic filler Inorganic materials 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 229920001774 Perfluoroether Polymers 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000011342 resin composition Substances 0.000 description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 101100481408 Danio rerio tie2 gene Proteins 0.000 description 1
- 101100481410 Mus musculus Tek gene Proteins 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 229910001634 calcium fluoride Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229920001038 ethylene copolymer Polymers 0.000 description 1
- 229920000840 ethylene tetrafluoroethylene copolymer Polymers 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000001028 reflection method Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
- 235000014692 zinc oxide Nutrition 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
- H01H33/7015—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts
- H01H33/7076—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts characterised by the use of special materials
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、ＳＦＧガスしゃ断器に係り、特に大電流しゃ
断時に可動電極及び固定電極間に発生するアークにＳＦ
ｓガスを吹き付けて短時間に消弧？せるためのアーク発
生部の近傍に配置された絶縁ノズルを備えたＳＦＧガス
しゃ断器に関する。Detailed Description of the Invention [Industrial Field of Application] The present invention relates to an SFG gas breaker, and in particular, to an SFG gas breaker that is applied to an arc generated between a movable electrode and a fixed electrode when a large current is interrupted.
Can you extinguish the arc in a short time by spraying s gas? The present invention relates to an SFG gas breaker equipped with an insulating nozzle placed near an arc generating part for causing arcing.
この種のしゃ断器において、電流をしゃ断すると可動電
極及び固定電極間に高温プラズマ状のアークが発生する
。このアークを消弧させるために従来、弗素樹脂からな
る絶縁性のノズルから，ＳＦ＆ガス流をアークに吹き付
けていた。しかし、弗素樹脂よりなる絶縁物は高圧ＳＦ
，ガス中で発生した高温プラズマ状のアークにさらされ
ると、アークから発生したエネルギー線が，ノズルの表
面のみならず内部まで侵入し、ノズルの内部にボイドや
カーボンを生じさせ、絶縁性能を著しく低下させる欠点
があった。In this type of breaker, when the current is interrupted, a high-temperature plasma-like arc is generated between the movable electrode and the fixed electrode. In order to extinguish this arc, conventionally, a flow of SF and gas was sprayed onto the arc from an insulating nozzle made of fluororesin. However, insulators made of fluororesin are high-voltage SF
, When exposed to a high-temperature plasma-like arc generated in a gas, the energy rays generated from the arc penetrate not only the surface of the nozzle but also the inside, creating voids and carbon inside the nozzle, which significantly deteriorates the insulation performance. There were drawbacks that made it worse.
特公昭５３−２８６３９号公報「しゃ断器」にはＳＦ６
ガスしゃ断器のノズルにおいて粒径３−２０ミクロンの
金属粉、ＳｉＯ２、Ｔ ｉ Ｏ，、Ａ１■Ｏ，、ガラス
繊維、クレー、タルクを１０−８０容量％添加したふっ
素樹脂で構威したノズルが記載されている。SF6 is included in the “breaker” published in Special Publication No. 53-28639.
The nozzle of the gas breaker is made of metal powder with a particle size of 3 to 20 microns, SiO2, TiO, A1O, glass fiber, clay, and fluororesin to which 10 to 80% by volume of talc is added. Are listed.
また、特公昭４８−３８２１６号公報「耐アーク性の大
きな四弗化エチレンーエチレン系共重合体組戊物」には
四弗化エチレンーエチレン系共重合体にＣａＦ２、Ｍｇ
Ｆ，、ＳｂＳ．ＢａＳ，ＢＮをｌ種以上、ｌＯ重量％以
上添加した組或物が記載されている。In addition, Japanese Patent Publication No. 48-38216 ``Tetrafluoroethylene-ethylene copolymer assembly with high arc resistance'' describes a tetrafluoroethylene-ethylene copolymer containing CaF2, Mg.
F,,SbS. A composition is described in which 1 or more types of BaS and BN are added in an amount of 10% by weight or more.
上記公知例にはＳＦ＆ガスしゃ断器におけるノズルがＳ
ＦＧガス中でどのような作用をするのかは明らかにされ
ていない。In the above-mentioned known example, the nozzle in the SF & gas breaker is S
It is not clear how it acts in FG gas.
本発明は、ＳＦ，ガスしゃ断器に最適なノズルを提供す
るものである。The present invention provides a nozzle that is most suitable for SF and gas breaker.
本発明の目的は、大電流しゃ断時に生ずるアークによる
内部劣化および表面の消耗を防止した絶縁性ノズルを備
えたＳＦ，ガスしゃ断器を提供することにある。An object of the present invention is to provide an SF or gas breaker equipped with an insulating nozzle that prevents internal deterioration and surface wear due to arcing that occurs when a large current is interrupted.
本発明は、上記の目的を達成するため、固定電極とその
固定電極に接離する可動電極とそれらの電極間を絶縁す
る弗素樹脂絶縁物からなるノズルとを備え，電流しゃ断
時に発生するアークを前記ノズルから前記電極間に発生
するアークにＳＦ６ガスを吹き付けて消弧するしゃ断器
において，前記ノズルは前記弗素樹脂絶縁物として、四
弗化エチレン樹脂で形成し、これに窒化硼素粉末を充填
剤として含有し、３００ＫＶ，４０ＫＡＩＩ；￥におい
て１０回遮断後も内部劣化を生しない馳織物から構成し
たものである。In order to achieve the above object, the present invention includes a fixed electrode, a movable electrode that approaches and separates from the fixed electrode, and a nozzle made of a fluororesin insulator that insulates between these electrodes, and eliminates the arc that occurs when the current is interrupted. In the breaker that extinguishes an arc generated between the electrodes from the nozzle by spraying SF6 gas, the nozzle is made of tetrafluoroethylene resin as the fluororesin insulator, and boron nitride powder is filled in the nozzle. It is constructed from a woven fabric that does not cause internal deterioration even after being shut off 10 times at 300 KV and 40 KAII;
また本発明は、少なくとも前記ノズルは四弗化エチレン
樹脂，四弗化エチレンと六弗化プロピレンとの共重合体
及びパーフロロアルコキシ基を有する四弗化エチレン樹
脂から選ばれた弗素樹脂絶縁物に窒化ほう素粉末を充填
剤として含有し，該組成物の樹脂の融点における組或物
の光反射率が６０％以上である＃＠縁物からなるガスし
ゃ断器を提供するものである。Further, the present invention provides that at least the nozzle is made of a fluororesin insulator selected from a tetrafluoroethylene resin, a copolymer of tetrafluoroethylene and hexafluoropropylene, and a tetrafluoroethylene resin having a perfluoroalkoxy group. The object of the present invention is to provide a gas breaker comprising a #@ rim containing boron nitride powder as a filler and having a light reflectance of 60% or more at the melting point of the resin of the composition.
更に本発明は、ノズルは前記弗素樹脂絶縁物に窒化ほう
素粉末を充填剤として２０容量％以下含有し、該組成物
の樹脂の融点における組成物の光反射率が６０％以上で
ある糖林物からなるガスしや断器を提案する。Further, the present invention provides a nozzle comprising a sugar forest containing 20% by volume or less of boron nitride powder as a filler in the fluororesin insulator, and a light reflectance of the composition at the melting point of the resin of the composition is 60% or more. We propose a gas shutoff switch made of materials.
本発明者は、大電流しゃ断時に発生するアークにおける
エネルギー線の特性に着目し、ノズルについて鋭意検討
した結果、ノズルが充填剤として窒化ほう素粉末を含有
した弗素系樹脂ＭＸ戊物からなるものが有効であること
が判明した。また、その弗素系樹脂組或物が弗素系樹脂
の融点で光反射率が６０％以上のときに特に有効である
ことを見出した。The present inventor focused on the characteristics of energy rays in the arc generated when a large current is cut off, and as a result of intensive study on nozzles, the inventor found that the nozzle is made of fluorine-based resin MX molding containing boron nitride powder as a filler. It turned out to be effective. It has also been found that the fluorine-based resin composition is particularly effective when the light reflectance is 60% or more at the melting point of the fluorine-based resin.
本発明において、特に有効な弗素樹脂絶縁物としては、
四弗化エチレン欄脂，四弗化エチレンと六弗化プロピレ
ンとの共重合体またはパーフロロアルコキシ基を有する
四弗化エチレン樹脂である。In the present invention, particularly effective fluororesin insulators include:
Tetrafluoroethylene resin, a copolymer of tetrafluoroethylene and hexafluoropropylene, or a tetrafluoroethylene resin having perfluoroalkoxy groups.
このうち特に四弗化エチレン樹脂がＳＦ，ガスしゃ断器
のノズル材として最高の特性を示すことが実験により明
らかになっている。Among these, experiments have revealed that tetrafluoroethylene resin in particular exhibits the best characteristics as a nozzle material for SF and gas circuit breakers.
これらの弗素樹脂ｖＡ縁物に添加する無機充填剤は窒化
ほう素（ＢＮ）粉末である。The inorganic filler added to these fluororesin vA edges is boron nitride (BN) powder.
本発明において，絶縁物は上記弗素樹脂に対し、これら
の窒化ほう素粉末が添加されたものであるが、その添加
量は樹脂の融点における絶縁物の光反射率が６０％以上
となるように調整される。In the present invention, the insulator is made by adding these boron nitride powders to the fluororesin, and the amount of addition is such that the light reflectance of the insulator at the melting point of the resin is 60% or more. be adjusted.
弗素系摺脂に各種の無機充填剤を添加することが知られ
ているが、窒化ほう素は他の無機充填剤に比べ広い波長
範囲で光反射率が高いという特徴があり、その結果ノズ
ルがアークを吸収しないので寿命が長いという利点があ
る。It is known that various inorganic fillers are added to fluorine-based resins, but boron nitride has a higher light reflectance over a wider wavelength range than other inorganic fillers, and as a result, the nozzle It has the advantage of long life because it does not absorb arcs.
ここで樹脂の融点の温度における光反射率を測定するの
は、樹脂自体の反射率が加味されないように樹脂自体を
ゲル状態（透明もしくは半透明状態）にして樹脂中に分
散された充填剤の光反射率を測定するためである。Here, the light reflectance at the melting point temperature of the resin is measured by making the resin itself into a gel state (transparent or translucent) so that the reflectance of the resin itself is not taken into account. This is to measure light reflectance.
一般にフッ素樹脂の融点は第一次転移点もしくはゲル化
点とも呼ばれ，結晶性を失いゲル化する温度である。例
えば四フッ化エチレン樹脂の場合融点は３２７℃とされ
ているが、工業的に成型されたものについてはＪＩＳ規
格により３２７±１０℃と規定されている。成型された
樹脂は融点以上になっても数十℃の範囲では加熱により
膨張するもののその形状はほぼ維持される。Generally, the melting point of a fluororesin is also called the first transition point or gel point, and is the temperature at which it loses crystallinity and becomes a gel. For example, the melting point of tetrafluoroethylene resin is set at 327°C, but the melting point of industrially molded resin is defined as 327±10°C by JIS standards. Even if the molded resin reaches a temperature above its melting point, it expands when heated in the range of several tens of degrees Celsius, but its shape is almost maintained.
本発明において『融点』とは、工業的なばらつきも考慮
して規定された上限値以上で、その形状・寸法に大幅な
変化のない範囲の前記上限値に近い温度と定義する。In the present invention, the "melting point" is defined as a temperature that is equal to or higher than the upper limit defined in consideration of industrial variations and is close to the upper limit within a range where the shape and dimensions do not change significantly.
この状態でフッ素樹脂の光反射率はなお数％の値を有す
るが、樹脂中に分散された充填剤の光反射率への影響は
少ない。後述する比較例および実施例においては、例え
ば四フッ化エチレン樹脂については前記のＪＩＳ規格の
値を考慮し３４０℃において測定した。In this state, the light reflectance of the fluororesin still has a value of several percent, but the influence of the filler dispersed in the resin on the light reflectance is small. In the comparative examples and examples described later, for example, the tetrafluoroethylene resin was measured at 340° C. in consideration of the above-mentioned JIS standard values.
光反射率の測定は、充填剤を含有する樹脂をフィルム状
にし、このフイルムを高熱チャンバー内に高屈折率透明
板を介して所定の間隔をもって平行に並設し、一定の光
源から所定波長（２５Ｏｒ＋ｕ＋〜８００ｎｍ）の光を
照射し、フィルム（試料）間を複数回（ｎ回）全反射さ
せて反射光を求め入射光と反射光との比から反射率を求
めた。To measure light reflectance, filler-containing resin is made into a film, and the films are placed in parallel at a predetermined distance in a high-heat chamber through a high-refractive-index transparent plate, and exposed to a predetermined wavelength ( 25Or+u+~800 nm) was irradiated, the film (sample) was totally reflected multiple times (n times) to obtain the reflected light, and the reflectance was determined from the ratio of the incident light and the reflected light.
Ｉ，＝ （Ｉ。一Ｉ，） η１
即ち反射率η＝（Ｌ／Ｉ。−ｒ ２） ｌ ／ ａ（Ｉ
，：光源の光，■１：反射光，■２：試料を除き前記高
屈折率透明板のみで同じ光路で全反射させた時の透過光
，Ｉ０−Ｉ２：入射光）この方法（多重全反射法）によ
れば、フィルムの厚さを光波長λに対して大きくしてお
くことにより，厚さの反射率に及ぼす影響を十分小さく
できる。I, = (I.-I,) η1 That is, reflectance η=(L/I.-r 2) l/a(I
,: Light from the light source, ■1: Reflected light, ■2: Transmitted light when totally reflected on the same optical path only by the high refractive index transparent plate excluding the sample, I0-I2: Incident light) This method (multiple total reflection) According to the reflection method), by making the thickness of the film large relative to the light wavelength λ, the effect of thickness on reflectance can be sufficiently reduced.
このようにして求めた光反射率ηは波長λの関数であり
，分光反射率といいη（λ）と表す。The light reflectance η obtained in this way is a function of the wavelength λ, and is called the spectral reflectance and is expressed as η(λ).
般に光源も分光組或を有するので、入射光も同様にＩ０
（λ）Ｉ２（λ）と表記する。本発明で単に反射率と言
う場合は上記の分光反射率から次式により求めた平均値
のことである。Generally, the light source also has a spectral set, so the incident light also has I0
It is written as (λ)I2(λ). In the present invention, when simply referring to reflectance, it refers to an average value obtained from the above spectral reflectance using the following formula.
本発明では、分光反射率を測定し、かつ上式の積分平均
する範囲は２ ５ ０ｎｍ − ８ ０ ０ｎｍの範囲
とし、遮断器において発生するアークのエネルギー線の
スペクトルに対応したものであることを必要としない。In the present invention, the range in which the spectral reflectance is measured and the integral average of the above equation is taken is in the range of 250 nm to 800 nm, which corresponds to the spectrum of the energy rays of the arc generated in the circuit breaker. do not need.
この範囲であれば市販の分光光度計を用いることができ
る。A commercially available spectrophotometer can be used within this range.
本発明において、絶縁物の光反射率を６０％以上とする
ために樹脂中に分散される充填剤の添加量を適宜選定す
ることができるが、窒化ほう素粉末に加えて他の充填剤
例えばアルミナ、酸化チタン、カオリンクレー、亜鉛華
、硫酸バリウム、弁柄などの粉末を樹脂中に分散するこ
ともできる。In the present invention, the amount of filler dispersed in the resin can be appropriately selected in order to make the light reflectance of the insulator 60% or more, but in addition to boron nitride powder, other fillers such as Powders such as alumina, titanium oxide, kaolin clay, zinc white, barium sulfate, and Bengara can also be dispersed in the resin.
本発明において充填剤の添加量は容量％であらわす。し
かし実際の調合にあたっては樹脂及び添加材は粉末状で
あるから、重量を測定して添加割合をきめている。この
割合は重量％となるが、本発明では光エネルギー線の遮
蔽効果を対象にしているので容量％が意味を持つ。重量
％と容量％とは樹脂及び添加材の比重によって換算され
る。この比重は素材の品質などによりいくぶんのばらつ
きがあるのが普通であり、ここでは一般に認められる下
限値から上限値までの範囲が考慮されなければならない
。In the present invention, the amount of filler added is expressed in volume %. However, in actual preparation, since the resin and additives are in powder form, the addition ratio is determined by measuring their weight. Although this ratio is expressed in weight %, the volume % is significant since the present invention is aimed at the shielding effect of optical energy rays. Weight % and volume % are calculated based on the specific gravity of the resin and additives. It is normal for this specific gravity to vary somewhat depending on the quality of the material, etc., and the generally accepted range from the lower limit to the upper limit must be considered here.
四弗化エチレン樹脂に第１表に示す各種充填剤を添加し
た絶縁物を用いてを内部耐アーク性を測定した。Internal arc resistance was measured using insulators prepared by adding various fillers shown in Table 1 to tetrafluoroethylene resin.
第１表において３４０℃における反射率とは前述の方法
で測定したものであり、実際の遮断器で電流を遮断した
時の値をいうものではない。In Table 1, the reflectance at 340° C. was measured by the method described above, and does not refer to the value when the current is interrupted by an actual circuit breaker.
第
ｌ
表
第ｌ表によれば、ＳＦ，ガス中で３００ｋＶ，４０ｋＡ
１０回しゃ断後の絶縁物の内部耐アーク性は光反射率が
６０％以上の場合、Ｔｉ○２及びＢＮが優れていること
が分かる。なお、ＢＮを１容量％添加した場合でも、成
形条件（温度、圧力，）、充填剤の品質（粒度、不純物
）などが適切でないと反射率が低く、アーク光の侵入を
阻止する能力が低く，内部劣化が発生することもある（
比較例１ｌ参照）。同様に、ＢＨの添加量が同し場合で
も（実施例３、４参照）成形条件や充填剤の品質により
反射率が異なることがある。Table 1 According to Table 1, 300kV, 40kA in SF, gas
It can be seen that Ti○2 and BN are excellent in internal arc resistance of the insulator after 10 interruptions when the light reflectance is 60% or more. Even if 1% by volume of BN is added, if the molding conditions (temperature, pressure, etc.) and filler quality (particle size, impurities) are not appropriate, the reflectance will be low and the ability to prevent arc light from entering will be low. , internal deterioration may occur (
(See Comparative Example 1l). Similarly, even when the amount of BH added is the same (see Examples 3 and 4), the reflectance may differ depending on the molding conditions and the quality of the filler.
各種充填剤入り弗素樹脂の光反射率は、第↓図の通りで
あり（第１図の反射率０．８が約６０％の光反射率に相
当する）ＢＮ充填弗素樹脂は広範囲の波長域に対して分
光反射率が６０％以上であることが分かる。ここで特に
注目す人きことは、ＢＮを添加したノズル材は広い波長
範囲で比較的平坦かつ高い分光反射率を有していること
である。The light reflectance of various filled fluororesins is as shown in the figure below (reflectance of 0.8 in figure 1 corresponds to approximately 60% light reflectance).BN-filled fluororesin has a wide wavelength range. It can be seen that the spectral reflectance is 60% or more. What is particularly noteworthy here is that the nozzle material doped with BN has a relatively flat and high spectral reflectance over a wide wavelength range.
これはＢＮを添加した弗素樹脂組或物が他の場合に比べ
優れた内部耐アーク性を有することを意味する。This means that the BN-added fluororesin composition has superior internal arc resistance compared to other cases.
第２表は各種充填剤入り弗素樹脂組成物で作ったノズル
材を空気中でアークに曝した場合のノズル消耗量と，そ
のノズルを実機ＳＦ，ガス遮断器に組込んで、アーク劣
化実験を行なった後，その消耗量を求めたものである。Table 2 shows the amount of nozzle wear when nozzle materials made from fluororesin compositions containing various fillers are exposed to arcs in the air, and the arc deterioration experiments were conducted by incorporating the nozzles into actual SF machines and gas circuit breakers. After doing so, the amount of consumption was determined.
第２表の結果から言えることは、消耗量が大きいノズル
材を用いるとノズルと可１１ＪＴｔ極とのギャップが大
きくなり、それだけ消弧能力の低下につながるので、Ｓ
ＦＧガスしゃ断器用絶林材としては適当でない。What can be said from the results in Table 2 is that if a nozzle material with a large amount of wear is used, the gap between the nozzle and the 11JTt pole will become larger, which will lead to a corresponding decrease in the arc extinguishing ability.
It is not suitable as extinct wood for FG gas breaker.
また、第１表と第２表とを比較すればＴｉｅ２はＢＮと
同様、内部耐アーク性は優れているが、表面劣化を意味
する消耗量はＢＮより著しく大きいので、ＳＦ，ガスし
ゃ断器用絶縁物としては有効でない。Comparing Tables 1 and 2, Tie2 has excellent internal arc resistance just like BN, but the amount of wear, which means surface deterioration, is significantly greater than that of BN. It is not valid as a thing.
第 ２ 表
第２表はアーク電流値とアーク継続時間の積に対する表
面消耗量を比較したものである。第２表において空気中
消耗量及びＳＦ，ガス中消耗量は相対量である。Table 2 Table 2 compares the amount of surface wear versus the product of arc current value and arc duration time. In Table 2, the amount consumed in air, SF, and the amount consumed in gas are relative amounts.
この結果によれば、種々の充填剤を添加したノズル材の
うち、ＢＮを添加したノズル材はＳＦ，ガス中での消耗
量が著しく少ないことが分かる。According to the results, it can be seen that among the nozzle materials to which various fillers were added, the nozzle material to which BN was added was significantly less consumed in SF and gas.
他の充填剤の場合は空気中での消耗量より、環境が厳し
いＳＦ，ガス中での消耗量が大きいが、本発明によるノ
ズル材の場合はＳＦ，ガス中での消耗量が空気中での消
耗量より少ないという特異な効果を有する。In the case of other fillers, the amount of consumption in SF and gas, which are harsh environments, is greater than that in air, but in the case of the nozzle material according to the present invention, the amount of consumption in SF and gas is greater than that in air. It has a unique effect of being less than the consumption amount of.
以−Ｌのように本発明によれば、大電流しゃ断時に発生
するアークにさらされる絶縁性ノズル等の絶縁部が耐久
性に優れるので，初期のしゃ断性能を長期間持続するし
ゃ断器を提供することができる。As described above, according to the present invention, the insulating parts such as the insulating nozzle, which are exposed to the arc generated when a large current is interrupted, have excellent durability, thereby providing a circuit breaker that maintains its initial breaking performance for a long period of time. be able to.
第１図は各種充填剤を添加した四弗化エチレン樹脂組或
物の戊形品の光反射率を示すグラフである。FIG. 1 is a graph showing the light reflectance of a molded article made of a tetrafluoroethylene resin composition to which various fillers have been added.
Claims (1)
らの電極間に設けられた弗素樹脂絶縁物からなるノズル
とを備え、前記ノズルから電流しや断時に発生する前記
電極間に発生するアークにＳＦ＿６ガスを吹き付けて消
弧するしや断器において、前記ノズルは前記弗素樹脂絶
縁物として、四弗化エチレン樹脂で形成し、これに窒化
ほう素粉末を充填剤として含有し、３００ＫＶ、４０Ｋ
Ａ時において１０回遮断後も内部劣化を生じない絶縁物
からなることを特徴とするＳＦ＿６ガスしや断器。1. Equipped with a fixed electrode, a movable electrode that approaches and separates from the fixed electrode, and a nozzle made of a fluororesin insulator provided between these electrodes, the current generated between the electrodes when the current flows from the nozzle is cut off. In the arc breaker that extinguishes the arc by spraying SF_6 gas on the arc, the nozzle is made of tetrafluoroethylene resin as the fluororesin insulator, contains boron nitride powder as a filler, and has a 300 KV, 40K
An SF_6 gas shield disconnector characterized by being made of an insulator that does not cause internal deterioration even after 10 shutoffs at time A.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2139511A JP2581606B2 (en) | 1990-05-29 | 1990-05-29 | SF lower 6 gas breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2139511A JP2581606B2 (en) | 1990-05-29 | 1990-05-29 | SF lower 6 gas breaker |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9536181A Division JPS57210507A (en) | 1981-06-22 | 1981-06-22 | Breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0329229A true JPH0329229A (en) | 1991-02-07 |
| JP2581606B2 JP2581606B2 (en) | 1997-02-12 |
Family
ID=15247007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2139511A Expired - Lifetime JP2581606B2 (en) | 1990-05-29 | 1990-05-29 | SF lower 6 gas breaker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2581606B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007534125A (en) * | 2004-04-21 | 2007-11-22 | アレバ・ティーアンドディー・エス・アー | Medium or high voltage electrical switch |
| JP2009032499A (en) * | 2007-07-26 | 2009-02-12 | Mitsubishi Electric Corp | Insulation nozzle for circuit breaker |
| JP2010232031A (en) * | 2009-03-27 | 2010-10-14 | Japan Ae Power Systems Corp | Buffer type gas circuit breaker |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5679873B2 (en) * | 2011-03-11 | 2015-03-04 | 株式会社東芝 | Arc resistant insulation and circuit breakers |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4838216A (en) * | 1971-09-17 | 1973-06-05 | ||
| JPS4858373A (en) * | 1971-11-26 | 1973-08-16 | ||
| JPS6437822A (en) * | 1987-08-04 | 1989-02-08 | Asahi Glass Co Ltd | Electrolytic capacitor |
-
1990
- 1990-05-29 JP JP2139511A patent/JP2581606B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4838216A (en) * | 1971-09-17 | 1973-06-05 | ||
| JPS4858373A (en) * | 1971-11-26 | 1973-08-16 | ||
| JPS6437822A (en) * | 1987-08-04 | 1989-02-08 | Asahi Glass Co Ltd | Electrolytic capacitor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007534125A (en) * | 2004-04-21 | 2007-11-22 | アレバ・ティーアンドディー・エス・アー | Medium or high voltage electrical switch |
| JP2009032499A (en) * | 2007-07-26 | 2009-02-12 | Mitsubishi Electric Corp | Insulation nozzle for circuit breaker |
| JP2010232031A (en) * | 2009-03-27 | 2010-10-14 | Japan Ae Power Systems Corp | Buffer type gas circuit breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2581606B2 (en) | 1997-02-12 |
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