JPS60158505A - Electrically insulated cable - Google Patents
Electrically insulated cableInfo
- Publication number
- JPS60158505A JPS60158505A JP1367984A JP1367984A JPS60158505A JP S60158505 A JPS60158505 A JP S60158505A JP 1367984 A JP1367984 A JP 1367984A JP 1367984 A JP1367984 A JP 1367984A JP S60158505 A JPS60158505 A JP S60158505A
- Authority
- JP
- Japan
- Prior art keywords
- electrically insulated
- insulated cable
- cables
- styrene
- insulator
- 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
Landscapes
- Organic Insulating Materials (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】 本発明は、電気絶縁ケーブルに関する。[Detailed description of the invention] The present invention relates to electrically insulated cables.
最近の都市化現象は、電線、ケーブルの管路をできるだ
け大きくせずに送電容量は増加させたいという要求を大
きくしている。このため、オレフィン市合体、たとえば
ポリエチレンおよび架橋ポリエチレンなどを主組成とす
る絶縁体を用いる電線、ケーブルにおいては、絶縁厚を
増加させずに送電圧を上昇させたいという要求が強い。The recent urbanization phenomenon has increased the demand for increasing power transmission capacity without increasing the size of conduits for electric wires and cables. For this reason, there is a strong demand for increasing the transmission voltage without increasing the insulation thickness in electric wires and cables using insulators mainly composed of olefin materials such as polyethylene and crosslinked polyethylene.
この様なオレフィン市合体を主組成とする絶縁体を持つ
電線、ケーブルは現在広く使用されており、その電圧階
級は年と共に大きく上昇してきている。ところでこの様
な電線、ケーブルにおいて現在最も大きな技術的間額の
一つは、これらの電線、ケーブルが課電を続けていると
徐々1こ劣化をきたし、破壊電圧が低下してくることで
ある。一般1こ、電線、ケーブル頚の保証寿命は30年
であるため、現在の設計基準としては、この低下分を考
慮して絶縁体の厚みを厚くしておくのが現状である。又
、上記オレフィン市合体を主組成とする絶縁ケーブルの
もう一つの大きい間額点は、実用中のくり返し雷インパ
ルス1こよる絶縁破壊電圧の低下である。Electric wires and cables having insulators mainly composed of such olefin mixtures are currently in wide use, and their voltage classes have been increasing significantly over the years. By the way, one of the biggest technical issues with these wires and cables at present is that if these wires and cables continue to be energized, they will gradually deteriorate and the breakdown voltage will drop. . Generally speaking, the guaranteed life of electric wires and cable necks is 30 years, so the current design standard is to increase the thickness of the insulator to account for this reduction. Another major point of the insulated cable mainly composed of the above-mentioned olefin composite is the drop in dielectric breakdown voltage due to one repeated lightning impulse in practical use.
絶縁厚の低減をはかるには上記2つの間頓を解決する必
要がある。すなわち、絶縁体の劣化の防止、およびくり
返し雷インパルス破壊値の低下の防止である。In order to reduce the insulation thickness, it is necessary to solve the above two problems. That is, prevention of deterioration of the insulator and prevention of decrease in repeated lightning impulse breakdown value.
これら2つの間頓のうち、電線、ケーブルの経年劣化現
象は、絶縁体のミクロボイドから生じるツリー発生によ
るものであることが知られている。Of these two types of shortcomings, it is known that the aging phenomenon of electric wires and cables is due to tree formation caused by microvoids in the insulator.
本発明者らは、絶縁材料1こついて検討を市ねた結果、
スチレン−エチレン共重合体またはそ〕架橋物を用いる
と、ミクロボイドから生じるツリー発生を効果的に抑止
できることを見い出した。又、同時に該共重合体または
その架橋物を用いるとくり返し雷インパルス1こよる破
壊電圧の低下を防止できることも見い出した。The inventors of the present invention conducted a study on one insulating material, and found that
It has been found that the use of a styrene-ethylene copolymer or a crosslinked product thereof can effectively suppress the generation of trees caused by microvoids. It has also been found that the use of the copolymer or its crosslinked product can prevent the breakdown voltage from decreasing due to one repeated lightning impulse.
本発明は、上記知見に基づき完成されたものであって、
その要旨は、スチレン−エチレン共重合体またはその架
橋物を絶縁体とした電気絶縁ケーブル1こ存する。The present invention was completed based on the above findings, and
The gist is that there is one electrically insulated cable whose insulator is a styrene-ethylene copolymer or a crosslinked product thereof.
本発明で用いるスチレン−エチレン共重合体は、ランダ
ムまたはグラフト共重合体であってよい。The styrene-ethylene copolymer used in the present invention may be a random or graft copolymer.
スチレン−エチレン−et合体+こは、ポリエチレン、
架橋ポリエチレン絶縁体1こ用いられているのと同様の
添加剤を配合することができる。Styrene-ethylene-et combination + polyethylene,
Additives similar to those used in cross-linked polyethylene insulation can be included.
架橋は、通常の方法で行え、たとえば有機過酸化物(た
とえばジクミルパーオキシド)を用いて架橋すればよい
。Crosslinking can be carried out by a conventional method, for example, using an organic peroxide (eg dicumyl peroxide).
次に実施例および比較例を示し、本発明を具体的lこ説
明するが、本発明はこれら実施例に限定されるものでは
ない。Next, the present invention will be specifically explained with reference to Examples and Comparative Examples, but the present invention is not limited to these Examples.
実施例1〜5および叱較例1〜3
表−1に示す組成の虫キ体およびそれらの架橋物を絶縁
体とした6KV60SQおよび154KV 1000
sqのケーブルを製造し、課電後のツリー数および/ま
たはくり返しインパルス破壊回数を測定した。Examples 1 to 5 and Comparative Examples 1 to 3 6KV60SQ and 154KV 1000 insulators using insect bodies and crosslinked products thereof having the compositions shown in Table 1
sq cable was manufactured, and the number of trees and/or the number of repeated impulse breakdowns after energization was measured.
結果を表−IIこ示す。The results are shown in Table II.
この結果から、スチレン−エチレン共重合体およびその
架橋物を絶縁体とした電気絶縁ケーブルは、ポリエチレ
ンおよびその架橋物を絶縁体とした電気絶縁ケーブル1
こ比し、耐ツリー性1こすぐれ、かつくり返しインパル
ス特性にすぐれていることが理解される。From this result, it was found that an electrically insulated cable using a styrene-ethylene copolymer and its cross-linked product as an insulator is 1.
In comparison, it is understood that the tree resistance is improved by 1, and the repeated impulse characteristics are excellent.
Claims (1)
絶縁体とした電気絶縁ケーブル。(1) An electrically insulated cable using a styrene-ethylene copolymer or a crosslinked product thereof as an insulator.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1367984A JPS60158505A (en) | 1984-01-28 | 1984-01-28 | Electrically insulated cable |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1367984A JPS60158505A (en) | 1984-01-28 | 1984-01-28 | Electrically insulated cable |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS60158505A true JPS60158505A (en) | 1985-08-19 |
JPH0360123B2 JPH0360123B2 (en) | 1991-09-12 |
Family
ID=11839869
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1367984A Granted JPS60158505A (en) | 1984-01-28 | 1984-01-28 | Electrically insulated cable |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS60158505A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01117202A (en) * | 1987-10-30 | 1989-05-10 | Nippon Petrochem Co Ltd | Radiation-resistant electrical wire and cable |
-
1984
- 1984-01-28 JP JP1367984A patent/JPS60158505A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01117202A (en) * | 1987-10-30 | 1989-05-10 | Nippon Petrochem Co Ltd | Radiation-resistant electrical wire and cable |
Also Published As
Publication number | Publication date |
---|---|
JPH0360123B2 (en) | 1991-09-12 |
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