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
Application number
JP19302384U
Other languages
Japanese (ja)
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP19302384U priority Critical patent/JPS61109412U/ja
Publication of JPS61109412U publication Critical patent/JPS61109412U/ja
Pending legal-status Critical Current

Links

Description

【図面の簡単な説明】[Brief explanation of the drawing]

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)

【実用新案登録請求の範囲】[Scope of utility model registration request] 金続抗張力体の周囲にプラスチツク被覆された
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.
JP19302384U 1984-12-21 1984-12-21 Pending JPS61109412U (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02289805A (en) * 1989-02-08 1990-11-29 Sumitomo Electric Ind Ltd Optical fiber unit

Cited By (1)

* Cited by examiner, † Cited by third party
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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