The document discusses various types of aerial fibre optics, specifically Optical Fiber Ground Wire (OPGW) and All-Dielectric Self-Supporting (ADSS) cables, outlining their functions, installation considerations, and accessories. OPGW serves both as a grounding wire and for telecommunications, while ADSS cables can be installed without service interruptions. Key aspects include engineering support for optimal cable selection based on site surveys and factors affecting ADSS design such as electrical and environmental considerations.

1. AERIAL FIBRE
OPTICS

2. AERIAL OPTICAL FIBRE CABLES: TYPES
New Line or Replacement
of Conductors on Existing Line
Existing Line and No Need
for Replacement of Conductors
OPPC ADSS or MASS
No Ground Wire No Ground Wire
Ground Wire
Lash or Wrap
Ground Wire
OPGW Lash or Wrap on
Phase Conductors

3. WHAT ?
 Optical fiber ground wire
WHERE ?
 On transmission lines at the top of the
towers
 On new transmission lines or existing lines
FUNCTIONS:
 OPGW can perform both the function of
ground wire and telecommunication.
OPGW: WHAT ?, WHERE ?
Optical Fiber
& Gel
FRP
Loose Tube
Thermal
Barrier
Al-tube
As Wire
(23% IACS)

4. OPGW: ACCESSORIES
 Suspension Fittings
 Single
 Double
 Dead End Fittings
 Sheath Stripper
 Splice Enclosure
 Vibration Damper
 Downlead Clamps on Towers
 OPGW Joint Box Mountings

5. OPGW: SUSPENSION FITTINGS
SINGLE DOUBLE
EPDM CUSHIONED ARMOUR GRIP

6. OPGW: SUSPENSION ASSEMBLY

7. OPGW: DEAD END ASSEMBLY

8. FIBER OPTIC: VIBRATION DAMPER

9. OPGW: SPLICE ENCLOSURE

10. OPGW: JOINT BOX MOUNTING

11. HELICAL WIRE: ARRANGEMENT
 Low unit compression stress as it is distributed over longer length.
 Prevent damage to sensitive fibers.
 In case of bolted type clamps, fiber may get damaged by
concentrated clamping stresses.

12. HELICAL WIRE: ADVANTAGES
 Dismantled easily
 Easy and quick installation
 Savings on cables and jointing boxes
 Long experience on this technology
 Process and testing technology
 No special training tools required

13. FIBER OPTIC: DOWNLEAD CLAMPS

14. FIBER OPTIC: SHEATH STRIPPER
 Provide tight structure fiber
units.
 Allow easy removal of the
overall unit sheath.
 Access to the enclosed fibers.

15. OPGW: TRANSMISSION LINE LAYOUT

16. OPGW: LIVE LINE INSTALLATION
SITE PICTURE: AIZAWL, MIZORAM

17. ADSS CABLE: SECTIONAL VIEW

18. ADSS
 ADSS is a self-supporting optical fiber cable.
 It has no metal component and can be installed on live lines with no outages.
Area of Application
 On Power Lines
 On Street Light Pole
 From Pole to building
Engineering Support
 Based on our detailed survey of site condition1s, we supply an optimal choice of ADSS
cable with other accessories.
ADSS CABLE: OVERVIEW

19. ADSS: DESIGN CONSIDERATION
Electrical Mechanical Environmental
Space Potential
Effect
Span Lengths
Wind Velocity and Aeolian
Vibration
Corona Effect Sag
Sheath Composition for UV
Resistance
Dry-Band Arcing Tension on Cable
Temperature and Pollution
level

20. ADSS: FITTINGS