JPS6025131A - Cylindrical cutout - Google Patents
Cylindrical cutoutInfo
- Publication number
- JPS6025131A JPS6025131A JP13319583A JP13319583A JPS6025131A JP S6025131 A JPS6025131 A JP S6025131A JP 13319583 A JP13319583 A JP 13319583A JP 13319583 A JP13319583 A JP 13319583A JP S6025131 A JPS6025131 A JP S6025131A
- Authority
- JP
- Japan
- Prior art keywords
- hook member
- seal plug
- flame
- cylindrical cutout
- cylindrical
- 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.)
- Pending
Links
- 229920005989 resin Polymers 0.000 claims description 11
- 239000011347 resin Substances 0.000 claims description 11
- 239000003063 flame retardant Substances 0.000 claims description 10
- 239000012212 insulator Substances 0.000 claims description 10
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 9
- 239000005977 Ethylene Substances 0.000 claims description 9
- 239000011810 insulating material Substances 0.000 claims description 9
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 8
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 7
- 229910000077 silane Inorganic materials 0.000 claims description 7
- 239000011256 inorganic filler Substances 0.000 claims description 4
- 229910003475 inorganic filler Inorganic materials 0.000 claims description 4
- 239000011342 resin composition Substances 0.000 claims description 3
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Chemical compound O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 description 6
- 239000004698 Polyethylene Substances 0.000 description 5
- 230000006378 damage Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- -1 polyethylene Polymers 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- WHHGLZMJPXIBIX-UHFFFAOYSA-N decabromodiphenyl ether Chemical compound BrC1=C(Br)C(Br)=C(Br)C(Br)=C1OC1=C(Br)C(Br)=C(Br)C(Br)=C1Br WHHGLZMJPXIBIX-UHFFFAOYSA-N 0.000 description 2
- 238000010892 electric spark Methods 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- 239000012796 inorganic flame retardant Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 239000012188 paraffin wax Substances 0.000 description 2
- 239000000454 talc Substances 0.000 description 2
- 229910052623 talc Inorganic materials 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 229920001342 Bakelite® Polymers 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 244000131360 Morinda citrifolia Species 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 235000017524 noni Nutrition 0.000 description 1
- 150000001451 organic peroxides Chemical class 0.000 description 1
- 229920013716 polyethylene resin Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 210000002784 stomach Anatomy 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
Landscapes
- Fuses (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
産業−］ユの利用分野
この発明は柱上変圧器の一次側に接続され、過負荷電流
や短絡事故から柱−１−変圧器を保護する筒形カットア
ウトに関するものである。[Detailed Description of the Invention] Industry - Field of Application This invention relates to a cylindrical cutout connected to the primary side of a pole transformer to protect the pole transformer from overload currents and short circuit accidents. It is.
従来技術
この種の筒形カットアウトにおいては下端開口（１）
部に嵌着したはかま部材と同はかま部材に対し開放可能
に取着した密栓は本機器が柱」１等に装着されるもので
あることから軽量であることはいうまでもないが、この
密栓はヒユーズ溶断時における本体碍子からの落出によ
って、その溶断を確実に表示するものでありはかま部材
との保合関係からもより軽量なものが選ばれる。しかも
、この密栓取付において本体碍子に対する部品加工を容
易にするため、はかま部材、密栓の両方を絶縁性のポ結
されており、しゃ断時におけるアークエネルギー昏こて
激しく吹き飛ばされ落下するが、この吊りひもにはその
圧力を緩衝するための工夫がなされ、通常取付状態より
二倍近くひもが延出されるようになっている。Prior Art In this type of cylindrical cut-out, the hook member fitted into the lower end opening (1) and the seal plug releasably attached to the hook member are those in which the device is mounted on a pillar. It goes without saying that it is lightweight because of its structure, but when the fuse blows out, this seal plug falls out of the main insulator and reliably indicates that the fuse has blown, and it is also lighter in terms of its retention with the hook member. something is chosen. Moreover, in order to facilitate the processing of parts for the main body insulator when installing this seal, both the hook member and the seal are connected with insulating bolts. The string is designed to buffer the pressure, and the string extends nearly twice as far as when it is normally attached.
ところが、前記のようなポリエチレン樹脂は易燃性であ
るため、
イ）台風等による異常汚損が重なった場合、はかま部材
、密栓が極度に汚損され、このはかま部（２）
材には漏洩電流が流れてトラッキングが発生し、更にこ
のｌ・ラッキングが大きくなると］ｔ 、＄１が易燃性
のため発火、延焼して焼失したり、せん絡して短絡事故
につながる。However, since polyethylene resin as mentioned above is easily flammable, (a) If abnormal contamination due to typhoons etc. occurs, the hook member and seal plug will become extremely dirty, and leakage current will occur in the hook (2) material. If it flows and tracking occurs, and this l・racking becomes larger,]t, $1 is easily flammable, so it may ignite, spread, and burn out, or it may flash over and cause a short-circuit accident.
口）取伺金具に吊りひもが風により引掛る場合もあり、
又、絶縁協調１・、接地金具が下方に延用している場合
には密栓をつないだ吊りひもや飛来物がこの放電間隙間
に田川り、一層漏洩屯流が増加する。しかも、はかま部
（〕がホーン付の場合は内部に中間電極を設けることに
なるため特に汚損が著しいと一層はかま部材を介して漏
洩電流が流れ易くなる。Ex) The hanging cord may get caught on the pick-up metal fittings due to the wind.
In addition, if the insulation coordination 1. and the grounding fitting extend downward, the hanging cord connecting the seal plug and flying objects will fall into the gap between the discharges, further increasing the leakage tonnage. Moreover, if the hook part ( ) is equipped with a horn, an intermediate electrode is provided inside, so if the hook member is heavily contaminated, leakage current is more likely to flow through the hook member.
ハ）大電流しゃ断時に密栓が吹き飛ぶ力が大きく吊りひ
もを２重にしている場合などをこは一層１反地物への引
掛りの度合が高くなる等の問題がある。c) When a large current is cut off, the force with which the seal plug is blown away is large and the hanging cord is doubled, causing problems such as the possibility of the plug getting caught on ground objects even more.
すなわち、特をこ台風期などでははかま部拐と密栓間の
表面−ひも−・接地物等へ接触する密栓用のひも、その
他の飛来物などで接地されて、急増する漏洩電流をこよ
り絶縁材料のトラッキング、発火（３）
現象を引起す虞れがある。In other words, especially during the typhoon season, insulating materials are used to protect against the rapidly increasing leakage current caused by the surface between the plug and the plug, the string for the plug that comes into contact with grounded objects, and other flying objects. There is a risk of causing tracking and ignition (3) phenomena.
そのため前記はかま部材、密栓の表面で発火し、密栓が
焼失した場合には放出形のヒユーズ筒の内部や電極部が
汚損劣化したり、充電部が露出したりして問題があり、
さらに前記はかま部材、密栓の燃焼により本体碍子の破
損を引き起したり地絡事故につながる危険があった。Therefore, if a fire ignites on the surface of the hook member or the seal plug, and if the seal burns out, the inside of the discharge type fuse cylinder and the electrode part may become contaminated and deteriorate, and the live parts may be exposed, causing problems.
Furthermore, there is a risk that the combustion of the hook member and the sealing plug may cause damage to the main insulator or lead to a ground fault.
発明の目的
この発明は前記問題点に着目してなされたものであって
、密栓が焼失しないためヒユーズ筒の内部や電極部が汚
損劣化したり、充電部が露出したりすることもなく、さ
らをこはがま部材、密栓の燃焼をこより本体碍子の破損
を引起こすこともない安全な筒形カットアウトを提供す
ることにある。Purpose of the Invention The present invention has been made in view of the above-mentioned problems.Since the seal plug is not burnt out, the inside of the fuse cylinder and the electrode part are not contaminated or deteriorated, and the live part is not exposed. The object of the present invention is to provide a safe cylindrical cut-out that will not cause damage to the main insulator due to combustion of the hook member and the seal plug.
発明の構成
この筒形カットアウトはヒユーズ筒を内装する本体碍子
の下端開口部に対し嵌着されるはかま部材と、同はかま
部拐に対し開放可能に取着した密栓とを難燃性絶縁材に
て形成したものである。Structure of the Invention This cylindrical cutout is made of flame-retardant insulating material. It was formed in
実施例
（４）
以下、本発明を基体化した一実施例を図に従って説明す
る。Example (4) An example based on the present invention will be described below with reference to the drawings.
筒形カットアウトは図に示すように本体碍子１の内部に
ヒユーズ筒挿入孔２が設けられ、その上端部には電源側
［」出線３に接続される−に１部電極４が設けられ、そ
の十１部電極４内には消弧俸４ａが吊下げ支持されると
ともに、下端部には下方に開口する下端部［二１部５が
形成されている。同下端開口部５内には負荷側に１出線
６に接続される下部電極７が設けられており、又、ｒｔ
ｊＩ記ヒユーズ筒挿入孔２内にはヒユーズ筒８が挿入さ
れている。同ヒユーズ筒８の−１一部接触子８ａは」二
部電極４と消弧俸４ａとの間に接離可能に嵌着され、下
端部の下部接触子８ ｂは下部電極に対して接離可能に
嵌着されている。As shown in the figure, the cylindrical cutout is provided with a fuse cylinder insertion hole 2 inside the main body insulator 1, and a partial electrode 4 is provided at the upper end of the fuse cylinder insertion hole 2, which is connected to the power supply side ['' output line 3]. An arc extinguisher 4a is suspended and supported within the eleventh part electrode 4, and a lower end [21 part 5] which opens downward is formed at the lower end. A lower electrode 7 connected to the first output line 6 on the load side is provided in the lower end opening 5, and the rt
A fuse tube 8 is inserted into the fuse tube insertion hole 2 shown in jI. The -1 part contact 8a of the fuse tube 8 is fitted between the two-part electrode 4 and the arc extinguishing part 4a so as to be removable, and the lower contact 8b at the lower end is in contact with the lower electrode. It is removably fitted.
そして、前記下端１′Ｊト汀１部５の下部には難燃性絶
縁材（シランをグラフトしたエチレン系樹脂Ｑこ無機充
填剤を添加してなる樹脂組成物、例えば住友ベークライ
ト（株）製、品番「スパイダツクスＭ７０１、 Ｋ ｌ
（Ｕ Ｌ ９４燃（：Ｉ’Ｊ試験 ／１６／／ Ｖ
Ｏ） ）（５）
からなるはかま部材９を嵌着するとともに同はかま部材
９にははかま部材９と同材質の難燃性絶縁材からなる密
栓１０が開放可能に取着されている。A flame-retardant insulating material (an ethylene-based resin grafted with silane or a resin composition containing an inorganic filler, for example, manufactured by Sumitomo Bakelite Co., Ltd.) is used at the bottom of the lower end 1'J. , Product number "Spiderx M701, K l
(UL 94 fuel (:I'J test /16//V
A hook member 9 made of O) )(5) is fitted, and a seal plug 10 made of the same flame-retardant insulating material as the hook member 9 is releasably attached to the hook member 9.
なお、１１ははかま部材９と密栓１０とを連結するひも
であって、両端部を除いて大部分が２重ひもに構成され
ている。In addition, the string 11 connects the hook member 9 and the seal plug 10, and most of the string except for both ends is constructed as a double string.
従って、上述のようをこ構成された筒形カットアウトは
漏洩電流がはかま部材９と密栓１０間を介して接地物等
へ接触するひも１１、その他飛来物などで接地された場
合に、はかま部材９と密栓１０が難燃性絶縁材により形
成されているためそれらの表面で発火することなく密栓
１０が焼失したりすることもなくなる。そのため放出形
ヒユーズ筒８の内部や電極部８ａ、８ｂ等が汚損劣化し
たり、充電部が露出したりすることがなく、本体碍子１
の破損を招いたり、地絡事故につながる危険もなくなる
。Therefore, the cylindrical cutout configured as described above prevents the hook member from leaking when the leakage current is grounded by the string 11 that comes into contact with a grounded object or the like through the hook member 9 and the seal plug 10, or by other flying objects. Since the seal plug 9 and the seal plug 10 are made of a flame-retardant insulating material, there is no chance of ignition on their surfaces and the seal plug 10 will not be burnt out. Therefore, the inside of the discharge type fuse cylinder 8, the electrode parts 8a, 8b, etc. are not contaminated or deteriorated, and the live parts are not exposed.
There is no danger of damage to the equipment or ground faults.
なお、難燃性絶縁材として前記材料の他にシランをグラ
フトシたエチレン系樹脂に無機充填剤を添加して形成し
た樹脂組成物とは次の（イ）’、（＋＝Ｉ）、（ハ）（
６）
の成分を含有する４・（刺から形成したものである。In addition, a resin composition formed by adding an inorganic filler to an ethylene resin grafted with silane in addition to the above-mentioned materials as a flame-retardant insulating material is the following (a)', (+=I), (ha) )(
6) It is formed from 4. (spines) containing the following ingredients.
（イ） シランをグラフトしたエチレン系樹脂を単独又
は当該樹脂とｒ７．いに相溶性のある樹脂との混合物。(b) Using silane-grafted ethylene resin alone or in combination with r7. A mixture with a compatible resin.
なお、この発明ではエチレン系樹脂とはポリエチレン（
ＰＥ ）、エチレン−１酢酸ビニル共重合体（ＥＶＡ）
、エチレンプロピレンジエン共重合体等の重合体の構成
単位として、エチレン又はそのハロゲン化物を含むもの
を言い、これにフリーラジカルを発生させる有機過酸化
物の存在下でシランと反応させたものをシランなグラフ
トしたエチレン系樹脂と言う。In addition, in this invention, ethylene resin refers to polyethylene (
PE), ethylene-1 vinyl acetate copolymer (EVA)
, ethylene propylene diene copolymer, and other polymers containing ethylene or its halide as a constituent unit, and silane is obtained by reacting this with silane in the presence of an organic peroxide that generates free radicals. It is called a grafted ethylene resin.
シランをグラフトシたエチレン系樹脂は当該樹脂と相溶
性のある樹脂と混合して用いても良く、上記のエチレン
系樹脂の中から採用しても良い。The ethylene-based resin grafted with silane may be used in combination with a resin that is compatible with the resin, or may be selected from among the above-mentioned ethylene-based resins.
（ロ）゛無機充填剤。(b) Inorganic filler.
電気特性を向」、するためのｊＨｉＱ機充填剤としては
水利アルミナ、水酸化アルミ、タルク、マイカ等が有効
であり ＩＩ？に水和アルミナが優れた効果を有する。Irrigation alumina, aluminum hydroxide, talc, mica, etc. are effective fillers for the jHiQ machine to improve electrical properties.II? Hydrated alumina has excellent effects.
（７）
なお、前記（イ）と幹）とは極めて有効な相乗効果を有
し、電気火花、火炎に接した際の熱軟化、溶融滴下を完
全に防止し得るものである。(7) Note that (a) and stem) have an extremely effective synergistic effect, and can completely prevent thermal softening and melting and dripping when coming into contact with electric sparks and flames.
さらに前記（イ）、（ロ）の成分ζ：以下の（ハ）の成
分を加えることをこより熱軟化、溶融滴下を防止した（
イ）。Furthermore, by adding the following component (c) to component ζ of the above (a) and (b), thermal softening and melting and dripping were prevented (
stomach).
（ロ）成分の耐炎効果が著しく改善され、電気火花にも
火炎にも耐え得るものが得られる。(b) The flame resistance effect of the component is significantly improved, and a product that can withstand both electric sparks and flames can be obtained.
（ハ）ハロゲン系有機難燃剤と無機難燃剤。(c) Halogen-based organic flame retardants and inorganic flame retardants.
ハロゲン系有機難燃剤としては塩素化パラフィン、デカ
ブロモジフェニルエーテル等があり、無機姉°燃剤とし
ては三酸化アンチモン等がある。Examples of halogen-based organic flame retardants include chlorinated paraffin and decabromodiphenyl ether, and examples of inorganic flame retardants include antimony trioxide.
なお、これら（イ）、（ロ）、（ハ）の各成分を混合し
たもの、例えばシランをグラフトしたＥＶＡ：２０、ポ
リエチレン：８０、水利アルミナ＝５０、デカブロモジ
フェニルエーテル：２５、三酸化アンチモン：１０をそ
れぞれ混合したものや、シランをグラフトシたＥｖＡ：
２０、ＥｖＡ：４０、ポリエチレン：４０、タルク：１
００、塩素化パラフィン：２０、三酸化アンチモン＝１
０をそれぞれ混合したものではＵＬ９４耐燃試験におい
ては、（８）
自己消火して滴下せず、ＪＩＳＣ３００５剛トラッキン
グ試験（１０１サイクル後）及びＡＳＴＭＤ４９５劃ア
ーク試験（１８０秒後）では変化なしである。A mixture of these components (a), (b), and (c), for example, silane-grafted EVA: 20, polyethylene: 80, iris alumina = 50, decabromodiphenyl ether: 25, antimony trioxide: EvA mixed with 10 or grafted with silane:
20, EvA: 40, polyethylene: 40, talc: 1
00, chlorinated paraffin: 20, antimony trioxide = 1
In the UL94 flame resistance test, (8) self-extinguishing and no dripping occurred in the mixture of 0 and 0, and there was no change in the JISC3005 rigid tracking test (after 101 cycles) and the ASTM D495 electric arc test (after 180 seconds).
ちなみ（二前記（（） 、 （ｏ） 、（ハ）の各成分
を混合したもノニ対しＥＶＡ：２０、ＰＥ：８０のみを
混合したものではＵＬ９４耐燃試験及びＪＩＳＣ３００
５耐トラッキング試験（１０１サイクル後）では燃焼し
て著るしく滴下し、ＡＳＴＭＤ４．９５耐アーク試験（
１８０秒後）では燃焼して窪む。By the way, (2) Noni mixed with each of the above components ((), (o), and (c)), but a mixture with only EVA: 20 and PE: 80 passed the UL94 flame resistance test and JISC 300.
5 tracking test (after 101 cycles), it burned and dripped significantly, and the ASTM D4.95 arc resistance test (
After 180 seconds), it burns and becomes depressed.
なお、各成分の数値は重量比を表わし、各試験は次のよ
うに行うものである。In addition, the numerical value of each component represents a weight ratio, and each test is performed as follows.
（ａ） Ｕ Ｔ、 ９４に準じた配燃試験１．２７Ｘｉ
３Ｘ約３騎の試験片を切取り、試験片を懸架し１０秒間
の接炎を２回繰返し、燃え方、滴下物の有無、脱脂綿の
燃焼の有無などを観察する。(a) Flaming test according to UT, 94 1.27Xi
Cut out a 3 x 3 test piece, suspend the test piece, repeat the flame contact for 10 seconds twice, and observe the way it burns, the presence of drippings, the presence or absence of burning of absorbent cotton, etc.
（ｂ） Ｊ Ｉ Ｓ Ｃ３００５に準じた耐トラツキン
グ試験
１０ Ｘ １５０Ｘ約３朋の試験片を切取り、試験（９
）
片の両端に１００間の間隔で電極を巻利は電極間に４Ｋ
Ｖの電圧をかける。１０秒間噴霧２０秒間休止のサイク
ルで電解液を試験片表面に噴霧し、漏洩電流を発生させ
表面状態を観察する。(b) Tracking resistance test according to JIS C3005: Cut out a test piece of approximately 3 mm in size (10 x 150 x
) Winding electrodes at both ends of the piece at intervals of 100 mm, the winding rate is 4K between the electrodes.
Apply a voltage of V. The electrolytic solution is sprayed onto the surface of the test piece in a cycle of spraying for 10 seconds and resting for 20 seconds to generate a leakage current and observe the surface condition.
（ｃ）ＡＳＴＭＤ４９５耐アーク試験
３０Ｘ３０Ｘ約３間の試験片を切取り、試験片平面上に
６．４ｍｍの間隔で電極を対向させ、ＩＯＫ■の電圧を
かけてアークを発生させる。アーク電流を漸増して表面
状態の変化の観察をする。(c) ASTM D495 Arc Resistance Test A test piece of about 30x30x is cut out, electrodes are placed opposite each other at a distance of 6.4 mm on the plane of the test piece, and a voltage of IOK is applied to generate an arc. Gradually increase the arc current and observe changes in the surface condition.
なお、この発明は図で鎖線で示すように本体碍子１を支
持する取付金具１２に対しせん終角１３を取着し、その
先端を下端開口部５と対応するように延出し、図示はし
ないがはかま部材９に設けた中間電極に対し放電間隙を
介して対向した筒形カットアウトに採用しても良い。In addition, in this invention, as shown by the chain line in the figure, a helical end corner 13 is attached to the mounting bracket 12 that supports the main insulator 1, and its tip extends to correspond to the lower end opening 5, not shown. It is also possible to adopt a cylindrical cutout facing the intermediate electrode provided on the hook member 9 with a discharge gap in between.
発明の効果
以」二詳述したようにこの発明は筒形カットアウトにお
いて、はかま部材及び密栓を難燃性絶縁材にて形成した
ことにより、漏洩電流によりはかま部材、密栓が発火す
ることなく、又、電気火花や（１０）
他所からの火に対しても容易に燃え上ることがなく、そ
れにより充電部が露出しないため安全性の向」−を図る
ことができ、燃焼による筒形カットアウト内の部品の内
部劣化を起すことがな（、本体碍子の破壊に進展せず、
又、地絡事故を防止することができる優れた効果を奏し
産業利用上優れた発明である。Effects of the Invention As described in detail in Section 2, this invention has a cylindrical cut-out with a hook member and a seal plug made of a flame-retardant insulating material, thereby preventing the hook member and the seal plug from catching fire due to leakage current. In addition, it does not easily catch fire from electrical sparks or (10) fires from other places, and as a result, live parts are not exposed, improving safety. No internal deterioration of internal parts (and no progress to destruction of the main insulator)
In addition, this invention has an excellent effect of preventing ground fault accidents, and is an excellent invention for industrial use.
図は筒形カットアウトの断面図である。
本体碍子１、ヒユーズ筒８、はかま部材９、密栓１０、
ひも１１゜
特許出願人 日本碍子株式会社
（１１）The figure is a cross-sectional view of a cylindrical cutout. Main body insulator 1, fuse tube 8, hook member 9, seal plug 10,
String 11゜ Patent applicant Nippon Insulator Co., Ltd. (11)
Claims (1)
はがま部拐をＩＮ着し１同はかま部材に対し密栓を開放
可能に取着した筒形力ットアウｈ＋こおいて、前記はか
ま部材及び密栓を難燃性絶縁材にて形成したことを特徴
とする筒形カットアウト。 ２ 難燃性絶縁材はシランをグラフトしたエチレン系樹
脂に無機充填剤を添加してなる樹脂組成物である特許請
求の範囲第１項記載の筒形カットアラ ト。[Scope of Claims] 1. Between the lower ends of the main body insulator in which the fuse tube is housed, a cylindrical force hole is attached to one part of the insulator, and the other part has a seal plug attached to the hook member so as to be openable. In this case, the cylindrical cutout is characterized in that the hook member and the seal plug are made of a flame-retardant insulating material.2 The flame-retardant insulating material is made by adding an inorganic filler to an ethylene resin grafted with silane. The cylindrical cutout according to claim 1, which is a resin composition comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13319583A JPS6025131A (en) | 1983-07-20 | 1983-07-20 | Cylindrical cutout |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13319583A JPS6025131A (en) | 1983-07-20 | 1983-07-20 | Cylindrical cutout |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6025131A true JPS6025131A (en) | 1985-02-07 |
Family
ID=15098932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13319583A Pending JPS6025131A (en) | 1983-07-20 | 1983-07-20 | Cylindrical cutout |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6025131A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5438324U (en) * | 1977-08-23 | 1979-03-13 |
-
1983
- 1983-07-20 JP JP13319583A patent/JPS6025131A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5438324U (en) * | 1977-08-23 | 1979-03-13 |
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