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Tips for Fiber Optic Splice Closure

June 22, 2021

Fiber Optic Splice Closure can be classified to 2 categories by appearance: In-line type and Dome type. Or by sealing methods: mechanical sealing and heat shrink sealing.It also can be sorted into 2 categories by whether it can accommodate fiber optic splitters and adapter panel or not.

 

Heat shrink sealing closures utilize heat shrink technology for the cable sealing which helps provide a watertight seal. While mechanical sealing closures utilize sealing tape or nut to provide good protection for fiber splicing point. Usually heat shrink sealing technology is used in dome type splice closures.

 

The following chart shows the difference on appearance and application among in-line type, dome type and splitter type closures.

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For ADSS (All Dielectric Self-support) cable or OPGW (Optical Ground Wire) cable, there is a special type splice closure, which has aluminum alloy shell suitable for use in harsh environments.

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When choosing a suitable fiber optic splice closure, we not only need to consider the appearance and application, but also need to consider some details, for example, whether we need to lead uncut cables, and the IP rating, etc.

 

  1. The big oval port on heat shrink sealing dome closures and the big round port on mechanical sealing dome closures can install two single cables or an uncut, mid-span cable.

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  1. IP rating is also an important factor need to be taken into consideration. Dawnergy’s full series splice closures can reach IP68. (IP68, the first digit stand for the protection against dust, the second digit stands for the protection against water. 6 means totally protected against dust, 8 means protected against long periods of immersion under a quoted pressure.)