Introduction
Enhanced Performance Fiber Unit (EPFU) is small size, light weight, enhanced surface outer sheath fiber unit designed for blowing into micro tube bundles by air flow. The outer thermoplastic layer provides a high level of protection and excellent installation properties.
Feature
Smaller diameter
Frees up capital to expand network and client base
Network design flexibility
5/3.5mm microduct suitable
Easy to upgrade
Greater blowing distance
Fiber: G.G652D, G.657A1, G.657A2
Standards:
Unless otherwise specified in this specification, all requirements shall be mainly in accordance with the following standard specifications.
Optical fiber:ITU-T G.651、G.652、G.655、G.657 IEC 60793-2-10、IEC 60793-2-50
Optical Cable:IEC 60794-1-2、IEC 60794-5
Note: It is recommended that the structure of 2 fibers unit consist of 2 filled fibers, for it is proved that this structure is better in the blowing performance and the fiber separability than that of one with zero or one filled fiber
Specification:
Fiber count (F) |
Nominal diameter (mm) |
Nominal weight (kg/km) |
Min. bend radius (mm) |
Temperature (℃) |
2 | 1.15±0.05 | 1 | 50 | -30 to +60 |
4 | 1.15±0.05 | 1 | 50 | |
6 | 1.35±0.05 | 1.3 | 60 | |
8 | 1.50±0.05 | 1.8 | 80 | |
12 | 1.65±0.05 | 2.2 | 80 |
Blowing Test
Fiber count (F) |
Blowing machine | Suitable microduct (mm) |
Blowing pressure (bar) |
Blowing distance (m) |
Blowing time (min) |
2 | PLUMETTAZ UM25 ERICSSON F CATWAY FBT-1.1 |
3/2.1 or 5/3.5 | 7/10 | 500/1000 | 10/18 |
4 | 3/2.1 or 5/3.5 | 500/1000 | 10/18 | ||
6 | 5/3.5 | 500/1000 | 10/18 | ||
8 | 5/3.6 | 500/1000 | 13/18 | ||
12 | 5/3.5 | 500/800 | 15/20 |
Attenuation
fiber Type | SM G.652D、G.655、G.657 | MM 62.5/125 |
Attenuation | 0.38dB/km max @1310nm 0.26dB/km max @1550nm |
3.5dB/km max @850nm 1.5dB/km max @1300nm |
Mechanical Performance
Test | Standard | Parameters | Test Results |
Tension | IEC 60794-1-2-E1 | Load is 1×W | fiber strain ≤0.4% at MAX Additional attenuation ≤0.05dB fiber strain ≤0.05% after test |
Bend | IEC 60794-1-2-E11A | Diam 40mm×3turns 5 cycles at 20℃ |
Additional attenuation ≤0.05dB,after test |
Crush | IEC 60794-1-2-E3 | 100 N, 60s | Additional attenuation ≤0.05dB,after test |
All optical testing proceeded at 1550 nm |
Environment Performance:
Test | Standard | Parameters | Test Results |
Temperature Cycle | IEC 60794-1-2-F1 | +20°C, -40°C, +60°C, (3 cycles) |
Absolute attenuation ≤0.5dB/km,during test Additional attenuation ≤0.1dB/km, during and after test |
Water Soak | IEC 60794-5 | 1000 hours in water, 18℃~22℃ |
(Test after temp cycle) ≤0.07dB/km Change compared to start value |
Damp Heat Cycle | IEC 60068-2-38 | 25°C, 65°C, 25°C, 65°C, 25°C, -10°C, 25°C |
Absolute attenuation ≤0.5dB/km,during test Additional attenuation ≤0.1dB/km, during and after test |
All optical testing proceeded at 1550 nm |