JPS61109412U - - Google Patents
Info
- Publication number
- JPS61109412U JPS61109412U JP19302384U JP19302384U JPS61109412U JP S61109412 U JPS61109412 U JP S61109412U JP 19302384 U JP19302384 U JP 19302384U JP 19302384 U JP19302384 U JP 19302384U JP S61109412 U JPS61109412 U JP S61109412U
- Authority
- JP
- Japan
- Prior art keywords
- metal
- sheath
- core
- cable
- optical fiber
- 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
- 239000002184 metal Substances 0.000 claims description 6
- 239000013307 optical fiber Substances 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 claims description 3
- 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 2
- 239000003063 flame retardant Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Description
第1図は従来光通信に一般に用いられる光ケー
ブルの構造を示す横断面図、第2図は本考案の実
施例を示す横断面図、第3図は誘起雷サージの波
高値と発生頻度の関係を示す特性図、第4図は誘
起雷サージの波高値と絶縁破壊を起こさないため
に必要な難燃性のプラスチツクの厚さの関係を示
す特性図である。
1…金属抗張力体、2…金属介在線、3…ガス
パイプ、4…金属性ユニツト中心部材、5…光フ
アイバ心線、6…光フアイバユニツト、7…金属
シース、8…プラスチツクシース、9…難燃性材
料シース。
Fig. 1 is a cross-sectional view showing the structure of an optical cable commonly used in conventional optical communications, Fig. 2 is a cross-sectional view showing an embodiment of the present invention, and Fig. 3 is the relationship between the wave height of induced lightning surge and the frequency of occurrence. FIG. 4 is a characteristic diagram showing the relationship between the peak value of an induced lightning surge and the thickness of flame-retardant plastic necessary to prevent dielectric breakdown. DESCRIPTION OF SYMBOLS 1...Metal tensile strength body, 2...Metal intervening wire, 3...Gas pipe, 4...Metallic unit central member, 5...Optical fiber core wire, 6...Optical fiber unit, 7...Metal sheath, 8...Plastic sheath, 9...Difficulty Flammable material sheath.
Claims (1)
光フアイバ心線と金属介在心線を集合してケーブ
ルコアとし、その外側に金属シース、プラスチツ
クシースを施した光ケーブルにおいて、該ケーブ
ルコアと該金属シースとの間に直撃雷から前記光
フアイバ心線の損傷を防止する必要な厚さの難燃
性材料の切れ目のないシースが配置されたことを
特徴とする耐雷光ケーブル。 In an optical cable in which a plastic-coated optical fiber core and a metal-interposed core are assembled around a metal-linked tensile strength member, and a metal sheath and a plastic sheath are provided on the outside of the cable core, the cable core and the metal sheath are A lightning-resistant cable characterized in that a continuous sheath of flame-retardant material of a required thickness is arranged between the cables to prevent damage to the optical fiber core from direct lightning strikes.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19302384U JPS61109412U (en) | 1984-12-21 | 1984-12-21 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19302384U JPS61109412U (en) | 1984-12-21 | 1984-12-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS61109412U true JPS61109412U (en) | 1986-07-11 |
Family
ID=30750438
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP19302384U Pending JPS61109412U (en) | 1984-12-21 | 1984-12-21 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS61109412U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02289805A (en) * | 1989-02-08 | 1990-11-29 | Sumitomo Electric Ind Ltd | Optical fiber unit |
-
1984
- 1984-12-21 JP JP19302384U patent/JPS61109412U/ja active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02289805A (en) * | 1989-02-08 | 1990-11-29 | Sumitomo Electric Ind Ltd | Optical fiber unit |
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