Product Description
Optical Ground Wire (OPGW) cables are advanced composite overhead conductors that combine the functions of a ground wire and optical fiber communication within a single integrated solution. Installed at the top of high-voltage and extra-high-voltage transmission lines, OPGW cables provide lightning shielding and fault current grounding while enabling secure, high-bandwidth data transmission for grid protection, monitoring, and communication.
Engineered for superior mechanical strength, electrical reliability, and environmental durability, APAR’s OPGW cables are designed to support modern smart grid infrastructure and critical transmission networks.
Key Advantages
- Dual functionality – grounding and optical communication in one cable
- High tensile strength suitable for long spans and demanding terrains
- Excellent short-circuit current carrying capability
- Reliable fiber protection within a robust metallic structure
- Superior resistance to corrosion and environmental stress
- Long service life with minimal maintenance
Available Variants
- 30+ type-tested OPGW designs
- Available in 24F, 48F and 96F configurations
- Custom fiber counts and mechanical ratings on request
- Single-layer and multi-layer stranded OPGW designs
- Stainless steel tube and aluminium tube constructions
- Steel tube embedded in aluminum tube configurations
- Multiple fiber counts as per project requirement
- Custom mechanical ratings for different span and loading conditions
- Solutions optimized for snow-bound, high-wind, and river-crossing applications
(Customized designs available based on voltage level, fiber count, and utility specifications.)
Fibre Types & Optical Configurations
- Fibre types: G652D, G655, Low-Loss, Ultra-Low-Loss
- Central stainless steel tube and stranded steel tube single/multiple SS tube
- SZ Core in aluminium tube
- Steel tube embedded within aluminium
Designed for low attenuation, high transmission stability, and long-distance communication performance.
Special Engineering Capabilities
APAR’s in-house design facility enables development of OPGW solutions for special operating and environmental conditions, including:
- Snow-bound locations
- High-altitude installations
- Heavy wind zones
- River crossings
- Low-sag transmission corridors
- Designs optimized for low attenuation properties
Special asymmetric OPGW configurations are also available to meet project-specific mechanical and electrical requirements.
Manufacturing Infrastructure
- Completely modernised manufacturing plant
- Backward integration from SZ Core to finished OPGW
- In-house design, type testing, and production capabilities
- Stringent quality control systems ensuring consistent performance
Our Credentials
- Supplied over 6000 km of OPGW
- Installations ranging from 33kV to 765kV
- Experience in 800kV transmission systems
- Successful deployments in India and international markets
Applications
- High-voltage (HV) and Extra-High-Voltage (EHV) transmission lines
- Substation-to-substation communication links
- Smart grid and SCADA systems
- Teleprotection networks
- Renewable energy evacuation projects
- Utility backbone communication infrastructure
Standards & Quality
Manufactured in compliance with applicable IEC, IEEE, and international standards along with customer-specific technical requirements.
Each OPGW cable undergoes rigorous mechanical, electrical, and optical performance testing to ensure long-term reliability under demanding operating conditions.
Construction & Material
OPGW cables consist of optical fibers enclosed within a hermetically sealed metallic tube, surrounded by one or more layers of aluminum, aluminum-clad steel, or alloy wires.
This construction ensures:
- Effective fault current dissipation
- Mechanical strength for overhead installation
- Protection of optical fibers against environmental and mechanical stress
APAR’s Design & Manufacturing Expertise
APAR designs and manufactures OPGW cables using advanced stranding technology, precision fiber integration processes, and stringent quality control systems.
With deep expertise in transmission conductors and grid infrastructure solutions, APAR delivers customized OPGW solutions optimized for long-span performance, high short-circuit ratings, and reliable communication in critical power transmission networks.