FOSC FTTH-9BR

FOSC Introduction

Series of FOSC is designed for protective connection for spliced fibers in straight-through and branching applications, could be used in underground, aerial, wall-mounting, pedestal or direct buried, hand hole-mounting and duct-mounting applications. The closure is made from high strength engineering material, moulded by NC injecting machine, high aging resistance to factors such as cold, hot, oxygen, or ultraviolet radiation and is excellent in mechanical performance. The structure is reasonable, and the cable fixing device is quite flexible; excellent sealing performance, which could solve all kinds of problems which might come up during installation.
We're outstanding in following aspects and could meet the international standard:

• Environmental protective material; compliant with RoHS.
• The material for the closure is developed by famous suppliers from abroad, excellent performance and could meet all requirements in IEC1073.1 after test.
• As the material for sealing gasket and closure are unique, our closures could be used repeatedly and low consumption to environment and resource.
• The fixing device for reinforced core is of high resistant to high voltage and could stand up to 15KV.
• Non-losable bolts are used to seal the closure so that they won't fall off during field installation.
• Unique grounding device to ensure the sealing performance, and at the same time easy and convenient for installation.
• The splice holder could be used for both ribbon and single core fibers.
• The "vulcanized rubber" sealing device and sealing gasket developed for dome type of FOSC has obtained patent.

• Environmental temperature：-40℃～+55℃
• Optical performance： no obvious additional attenuation
• Temperature recycle：When the closure is pressurized to（60±5）KPa，10 times, the drop of air pressure should be less than 5 KPa，no air bubble after 15 minutes when placed under water.
• Seal performance：when the closure is pressurized up to 100KPa，no air bubble after 15 minutes under water, or no change of air meter after 24 hours.
• Re-entry performance：the sealing performance could still meet the standard after three times of re-entry.
• Insulation resistance：≥2×104MΩ.
• Voltage resistance：no arc-over or no puncture under 15KVDC/1min.

Applications
FTTH-9BR type of Fiber Optic Splice Closure is a kind of dome closures. It is suitable for aerial, pole-mounting and wall-mounting applications. The closure has good sealing and anti-impaction performance, and convenient to operate. It has four round cable inlet and outlet entrances of outer diameterφ16, four round cable inlet and outlet entrances of outer diameterφ25, one oval cable inlet and outlet entrance of φ38×69 which is used for uncutting cable and one valve. The cable entrances adopt heat-shrink sealing method.
The joint of cover and base of closure adopts vulcanized rubber molding sealing ring, the body of closure can be sealed by machine riveting. Inside the body of closure, it consists of cable fixing device,steel core fixing device,earth fault protection,Page-style and multi-layer fiber tray?combination device and so on,all the devices can meet the requirements of protection performance in cable connection and branching.

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