1. CABLE STRUCTURE
1.1: Cross-sectional Drawing of Cable
Table 1 - Diameter, Composition and Weight:
No. of Fiber | Nominal Cable Diameter (mm) | Approx. Cable Weight (kg/km) | Minimum Bending Radius (mm) |
| | | Under Load | No Load |
31-60 | 9.8 | 133-136 | 196 | 98 |
61~72C | 10.5 mm | 183.17-187.68 | 210 | 105 |
2. PHYSICAL / MECHANICAL / ENVIRONMENTAL PERFORMANCE AND TEST
2.1. Mechanical and Environmental Performance of the Cable
Table 2: The Mechanical and Environmental Performance of the Cable
ITEMS | TEST METHOD AND ACCEPTANCE CRITERIA |
Tenslide Strength | # Test method: IEC 60794-1-2-E1 - Mandrel diameter: 30D (D = Cable Diameter) - Max. tensile load: 500kg - Continuously tensile load : 200kg # Acceptance Criteria: - Graph of fiber elongation (at maximum load) : £ 0.6% - Attenuation increment: £ 0.1 dB |
Compression Test | # Test method: IEC 60794-1-2-E3 - Applied load: 1100 N/50 mm for 10 minutes - No of points: 1 # Acceptance Criteria - Attenuation Increment: £ 0.10 dB - No jacket cracking and fiber breakage |
Impact Resistance | # Test method: IEC 60794-1--2E4 - Height of impact: 100 cm - Drop hammer mass: 1 kg - Radius impact surface : 25 mm - No. of impact per point: 1 - No. of impact points: 10 points # Acceptance Criteria - Attenuation Increment : £ 0.10 dB - No jacket cracking and fiber breakage |
Repeated Bending | # Test method: IEC 60794-1-2-Method E11A - Sheave diameter: 20D (D = cable diameter) - Bend Angle : ± 90° - No. of flexing cycles : 25 cycles # Acceptance Criteria - Attenuation Increment : £ 0.10 dB - No jacket cracking and fiber breakage |
Twisted Test | # Test method: IEC 60794-1-2-E7 - Cable length twisted: 2m - No. of twist cycles: 10 cycles - Twist angle: ± 180° # Acceptance Criteria - Attenuation Increment: £ 0.10 dB after the completion of the test - No jacket cracking and fiber breakage |
Temperature Cycling | # Test method: IEC 60794-1-2-F1 - Temperature cycling schedule : 23°C ® -30°C ® +60°C ® 23°C - Soak time at each temperature : 24 h # Acceptance Criteria - Attenuation increment: £ 0.1 dB/km |
Water Penetration | # Test method: IEC 60794-1-2-F5 - Length of specimen: 1m - Height of pressure head: 1m - Test time: 1h # Acceptance Criteria - No jacket cracking and fiber breakage |
2.2 Phisical Performance of the Cable
Table 3: Phisical Performance of the Cable
ITEMS | SPECIFICATION |
Skin Type | HDPE |
Max. Electric field intensity | £ 3.5kN |
Max.Loading Capacity (Working) | £ 2.5kN |
Compression resitance | 1500N/10cm |
Temperature Elongation | < 8.2x10-6/oC |
Temprature range | -5 oC ~ 70 oC |
Humidity | 1~100% |
Min. Bend Radius before install | ≥ 20 instalments diameter |
Min. Bend Radius after install | ≥ 10 instalments diameter |