Enhanced Performance Fibre Units (EPFU)
Air-blown Micro Optical Fibre Cables for C-NET
Micro air-blown fiber unit (MABFU)
■ Introduction:
MABFU is the important part of the air blown fibre cable, and it is the most popular product of the indoor optical fibre cables for generic cabling in Europe、Japan 、South Korea and so on.
The MABFU is the product that with small diameter, lightweight, highly flexibility and proper stiffness, and it can be blown into the microduct of 5.0/3.5mm. The fibres are coated with a soft acrylate resin which provides excellent dimensional and thermal stability to cushion the fibres, in addition, the resin can be easily stripped in connecting the fibres. The outer sheath is a thermoplastic that is of low friction.
The surface of the sheath is designed with special grooves, compared to the surface of the traditional optical fibre cable, it provides not only the high level of mechanical protection, but also the perfect blowing performance.
■ Features and Benefits:
- 2、4、6、8 and 12 fibres options.
- Stable structure, good mechanical and temperature performance.
- Designed with special grooves to advance blowing distance.
- Lightweight and proper stiffness , repeat installation.
- Designed with no gel, easy stripping and handling.
- Better costs advantage compared to traditional product.
- Complete accessories, less manpower, lower installation time.
■ Standards:
Unless otherwise specified in this specification, all requirements shall be mainly in accordance with the following standard specifications.
Optical Fibre:ITU-T G.652、G.657 IEC 60793-2-50
Optica Cable:IEC 60794-1-2、IEC 60794-5
■ Cross Section:
1.Optical Fibre 2.Resin 3.+2″Filled” Fibress 4.Low Friction Sheath 5.Groove
■ Basic Performance:
Fiber Count and Specifications for Single Core Tight Wrapped Indoor Optical Cable (GJFJH 1×n)
Fiber Count and Outer Diameter
· 2 Fibers:
Outer Diameter: 1.15 ± 0.05 mm
· 4 Fibers:
Outer Diameter: 1.15 ± 0.05 mm
· 6 Fibers:
Outer Diameter: 1.35 ± 0.05 mm
· 8 Fibers:
Outer Diameter: 1.15 ± 0.05 mm
· 12 Fibers:
Outer Diameter: 1.65 ± 0.05 mm
Weight
· 2 Fibers: 1.0 g/m
· 4 Fibers: 1.0 g/m
· 6 Fibers: 1.3 g/m
· 8 Fibers: 1.8 g/m
· 12 Fibers: 2.2 g/m
Minimum Bend Radius
· 2 Fibers: 50 mm
· 4 Fibers: 50 mm
· 6 Fibers: 60 mm
· 8 Fibers: 80 mm
· 12 Fibers: 80 mm
Temperature Requirements
· Storage: -30°C to +70°C
· Operation: -30°C to +70°C
· Installation: -5°C to +50°C
Cable Service Life
· Service Life: 25 years
Note: It is recommended that the structure of 2 fibres unit consist of 2 filled fibres, for it is proved that 2 fibres unit
with 2 filled fibres is better than the one with zero or one filled fibre in the blowing performance and the fibre stripping-ability
■ Testing parameter:
Fibre Unit Attenuation
Fibre Type：SM G.652D、G.657
Attenuation：0.40dB/km max @1310nm；0.30dB/km max @1550nm
Blowing Test and Mechanical and Environmental Performance of Single Core Tight Wrapped Indoor Optical Cable (GJFJH 1×n)
Blowing Test
Fibre Count
· 2 Fibres
· 4 Fibres
· 6 Fibres
· 8 Fibres
· 12 Fibres
Test Equipment
· PLUMETTAZ: UM25
· ERICSSON: F
· CATWAY: FBT-1.1
Standard Duct
· Diameter: 5.0/3.5 mm
Pressure
· 7 bar / 10 bar
Typical Blowing Distance
· 2 Fibres: 500m / 1000m
· 4 Fibres: 500m / 1000m
· 6 Fibres: 500m / 1000m
· 8 Fibres: 500m / 1000m
· 12 Fibres: 500m / 800m
Typical Blowing Time
· 2 Fibres: 10min / 18min
· 4 Fibres: 10min / 18min
· 6 Fibres: 12min / 18min
· 8 Fibres: 13min / 18min
· 12 Fibres: 15min / 18min
Mechanical Performance
Tension
· Standard: EN 18700 A1/501, IEC 60794-1-2-E1
· Parameters: Load is 1×W
· Test Results: Additional attenuation ≤0.05dB after test
Bend
· Standard: IEC 60794-1-2-E11A
· Parameters: Diameter 40mm × 3 turns, 5 cycles at 20°C
· Test Results: Additional attenuation ≤0.05dB after test
Crush
· Standard: IEC 60794-1-2-E3
· Parameters: 100 N, 60 seconds
· Test Results: Additional attenuation ≤0.05dB after test
Note: All optical testing was conducted at 1550 nm.
Environmental Performance
Temperature Cycle
· Standard: IEC 60794-1-2-F1
· Parameters: -30°C, +70°C, 2 cycles
· Test Results: Absolute attenuation ≤0.5dB/km during test, additional attenuation ≤0.1dB/km during and after test
Water Soak
· Standard: IEC 60794-5
· Parameters: 1000 hours in water, 18°C to 22°C (test after temperature cycle)
· Test Results: ≤0.07dB/km change compared to start value
Damp Heat Cycle
· Standard: IEC 60068-2-38
· Parameters: 25°C, 65°C, 25°C, 65°C, 25°C, -10°C, 25°C
· Test Results: Absolute attenuation ≤0.5dB/km during test, additional attenuation ≤0.1dB/km during and after test
Note: All optical testing was conducted at 1550 nm.
