OPGW Optical Fiber Composite Overhead Ground Wire
Function: Dual-purpose Lightning Shielding Ground Wire + Optical Communication Fiber
Voltage Grade: Supports 35kV to 1000kV Ultra-High Voltage Power Transmission Circuits
Fiber & Core Options: Premium Singlemode G.652D / G.657A | Tailored Core Counts
Compliance: Fully manufactured to international IEC Standards & Power Industry Specifications
Description
Technical Parameters
Key Product Features
- Dual-Functional Integration: Replaces traditional steel ground wire atop power towers, performing two core tasks simultaneously: providing lightning shielding for power lines and delivering real-time data transmission for smart grid systems.
- Hermetically Sealed Fiber Unit: Optical fibers are securely placed in central stainless steel or aluminum alloy loose tubes filled with waterproof fiber paste, completely isolating the cores from moisture and chemical erosion.
- Heavy-Duty Metallic Strands: Surrounding the fiber unit are stranded high-strength aluminum-clad steel wires and aluminum alloy wires. These form a rugged mechanical structure with exceptional tensile strength and anti-crush performance.
- Tailored Cross-Sections: Supports fully customized structural designs and cross-section parameters to perfectly match various span lengths and short-circuit current capacity requirements.
Performance Advantages
- UHV Power Grid Adaptability: Engineered to withstand extreme operating environments alongside high-voltage transmission lines ranging from 35kV up to 1000kV ultra-high voltage (UHV) circuits.
- Exceptional Lightning Diversion: The outer metallic strands deliver outstanding conductive capability, efficiently diverting massive short-circuit currents and lightning surges safely to the ground.
- Severe Environment Resistance: Features superior resistance against oxidation, wind fatigue, heavy ice coating, and salt-fog corrosion-ideal for high-altitude mountains, coastal regions, and frigid zones.
- Cost-Efficient Infrastructure: By combining the ground wire and communication cable into one, it completely eliminates separate optical cable installation costs and dramatically shortens project timelines.
Targeted Applications
- The OPGW composite cable is the premier choice for high-voltage electrical corridors, specifically:
- New high-voltage and ultra-high voltage power grid construction (35kV - 1000kV).
- Old overhead transmission line telecommunication renovations and upgrading.
- Smart grid infrastructure, power automation, and real-time substation monitoring networks.
- Long-distance communication backbones running through complex geographical terrains.
- Renewable energy integration, including wind farm and large-scale photovoltaic (solar) power station grid connections.
Manufacturing Excellence & Corporate Strength
Backed by Headway Group: Manufactured by CHANGXING HEADWAY IMPORT & EXPORT CO., LTD, a key subsidiary of Headway Group (1+ Billion Yuan annual output), offering unbeatable supply chain stability for large-scale state grid tenders.
20+ Years of Engineering Expertise: As a verified high-tech manufacturer featuring an established provincial-level R&D center and 64 patents, we offer robust OEM/ODM technical customizations for complex power engineering.
Rigorous Short-Circuit Testing: Every batch strictly complies with international IEC standards. Finished OPGW cables pass severe industrial testing before shipment, including tensile, wind fatigue, waterproof penetration, and crucial short-circuit thermal stability tests.
Global Power Grid Certifications: Our production facilities hold a comprehensive suite of international credentials-including ISO 9001:2015, CE, RoHS, IEC Standard, UL, and TÜV Rheinland-trusted by power contractors in over 100 countries.
FAQ
Q1: What are the primary functions of an OPGW cable in high-voltage transmission lines?
A: An OPGW (Optical Fiber Composite Overhead Ground Wire) serves a dual purpose. Structurally, it is installed at the top of transmission towers to act as a conventional ground wire, shielding power lines from lightning strikes and conducting short-circuit currents. Internally, its integrated optical fibers provide a high-speed, reliable communication pathway for smart grid data, voice, and network monitoring signals.
Q2: How does the OPGW structure protect optical fibers from the high heat of a short-circuit current?
A: As an experienced manufacturer, our OPGW cables house the fibers inside premium stainless steel or aluminum alloy loose tubes filled with heat-resistant fiber paste. Surrounding this unit are high-conductivity aluminum-clad steel strands. When lightning or a short circuit occurs, these outer metallic layers safely divert the massive electric current to the ground, shielding the inner fiber tubes from extreme thermal and mechanical stress.
Q3: Can your factory customize OPGW cables for extreme climates like coastal salt-fog or high-altitude ice regions?
A: Yes. Supported by Headway Group's advanced R&D center, we customize the outer metallic wire composition, tensile ratings, and cross-sections to match specific environmental loads. Our OPGW outer layers feature outstanding resistance to oxidation, wind vibration fatigue, and heavy ice coating, making them suitable for high-altitude mountains, coastal salt-fog zones, and frigid regions.
Q4: Does your OPGW cable pass international IEC standards for power utility projects?
A: Absolutely. Backed by Headway Group's strict quality control, our OPGW cables are fully manufactured in accordance with international IEC standards. Before delivery, we conduct extensive technical testing-including mechanical tensile tests, vibration fatigue tests, water penetration tests, and short-circuit thermal stability tests-backed by ISO 9001, TÜV Rheinland, and CE certifications to meet global power utility tender requirements.
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