Extra Large Fiber Optic Splice Closures

Innovative design is an erect and horizontal type with one hinge in one side and open in another side. It is the most reliable FOSC in the world. The FOSC is suitable for protecting fiber cable splices in straight-through and branching applications. Based on an advanced formula, the plastic parts are made of injection-molded, high-strength engineering plastic ABS or PC by numerical control equipment; therefore effectively prevent products from aging caused by coldness, heat, oxygen and ultraviolet radiation. The strong housing and main components provide fire resistant, waterproof, and quakeproof while protecting splices during pulling, compressing, and impacting, bending, tensioning, axial tensioning.

It ensures long-term reliability and usage under ambient temperature from -40℃ to +75℃

Purpose: aerial, direct-burying, wall-mounting, Pipeline laying way

Dimension (CM): 58*25.5*14CM

Cables Entry & Exit:3Entry 3Exit

Cable Diameter (mm): Φ7-Φ30

Sealing Structure : Sticky cincture Sealing

Material: PC

Maximum capacity: Bunchy 12-288cores ; Ribbon:576 cores

2. Usage

Suitable for aerial, pipe lined or direct buried applications; suitable for common fiber cables and ribbon cables; suitable for straight-through as well as for branch joints to seal and protect splice, fusion, layout and storage of the fiber cables

3. Technical indexes

(1) Environment Condition:

Environment Temperature: -40℃~+75℃

Atmospheric pressure: 70~106Kpa

(2) Electric property:

Insulation resistance between the metallic elements themselves and between metallic element and the earth is more than 2×10⁴MΩ;

The Voltage resistance between the metallic elements themselves and between metallic element and the earth is 15KVDC/1min, Non-puncture, no arc-cover.

(3) Optic property:

The curvature radius of the spare fiber is over 37.5mm; no additional optic attenuation.

(4) Seal Performance:

Airproof performance: Airing pressure inside box 100Kpa, pointer immovability after 24 hours or no air bell within 15min when parked in the common temperature water.

(5) Re-encapsulation Performance:

No change in the index of air-proof performance after three times of repeat encapsulation

(6) Mechanical Performance:

After all the following tests, the box and all the components inside don`t change, check through gently or open it if necessary.

When the closures are pressurized up to 60 kPa, it can still meet the seal performance standard after the mechanical performance test

a. can withstand 1000N horizontal pull force;

b. can withstand 3000N/10cm vertical pressure;

c. can withstand 16N·m impact three times;

d. can withstand 50N·m twist force 10 circling times 10 cycles of ±90°twisting angle ;

Notes:

1.It is better to fasten the bolts again thoroughly every 10 minutes after screwing down them.

2.Screwing down the bolts of the box should strictly act according to [installation instruction"

3.please check whether the pothook connector has been installed or not before screwing down the box for aerial application