OPGW Overhead Conductor Greases
Corrosion Protection Grease for Optical Ground Wire (OPGW)
Protecting OPGW cables against moisture, corrosion, oxidation, and harsh environmental conditions for reliable power transmission and optical communication.
OPSTECH OPGW Overhead Conductor Greases are specially formulated for Optical Ground Wire (OPGW) cables used in modern transmission networks. The grease provides long-term corrosion protection for the metallic components inside the cable while maintaining excellent compatibility with galvanized steel wires, aluminum alloy elements, stainless steel tubes, and optical fiber structures.
Unlike conventional overhead conductors, OPGW cables combine grounding and fiber optic communication within a single cable. Moisture, salt spray, industrial pollution, and temperature fluctuations can gradually affect the internal metal components if adequate protection is not provided. Our specially engineered grease forms a durable protective barrier that prevents water ingress, minimizes oxidation, and reduces galvanic corrosion, helping maintain both mechanical strength and communication reliability throughout the cable’s service life.
With more than 45 years of grease manufacturing experience, OPSTECH supplies high-performance conductor greases to cable manufacturers and power utilities worldwide. Our products are designed for demanding transmission environments and can be manufactured to comply with IEC 61394, BS EN 50326, GB/T 36292, and customer-specific technical requirements.
Why OPGW Conductors Need Protective Grease
OPGW cables operate in challenging outdoor environments for decades. Continuous exposure to rain, humidity, coastal salt spray, UV radiation, and industrial pollutants may eventually allow moisture to reach internal metallic components, leading to corrosion and reduced cable reliability.
A high-quality OPGW conductor grease helps to:
- Prevent moisture penetration into the cable.
- Protect steel tubes, galvanized wires, and aluminum components from corrosion.
- Reduce galvanic corrosion between different metals.
- Maintain the mechanical integrity of the cable.
- Improve long-term reliability of optical communication systems.
- Extend the service life of transmission infrastructure.
Features & Benefits
Excellent Moisture Barrier
Forms a continuous protective layer that effectively blocks water, oxygen, and other environmental contaminants from entering the cable.
Superior Corrosion Protection
Protects internal metallic components against oxidation, rust, and galvanic corrosion during long-term outdoor service.
Compatible with OPGW Cable Structures
Engineered to work safely with optical fiber units, stainless steel tubes, galvanized steel wires, and aluminum alloy components without affecting cable performance.
Stable Performance Across Wide Temperatures
Maintains excellent consistency under both high and low temperature conditions without excessive softening, separation, or hardening.
Long-Term Reliability
Provides durable protection throughout the expected operating life of OPGW transmission cables while reducing maintenance requirements.
Technical Data
| Items | OPS20A120 | OPS40A120 | OPS20A180 | OPS40A180 | OPS60A180 | OPS40A240 |
| Description | 20A120 | 40A120 | 20A180 | 40A180 | 60A180 | 40A240 |
| Max. Temp. Rating | 120°C | 120°C | 180°C | 180°C | 180°C | 240°C |
| Min. Temp. Rating | 20°C | 40°C | 20°C | 40°C | 60°C | 40°C |
| Drop Point | >280°C | >280°C | >300°C | >300°C | >300°C | >330°C |
| Application | ACSR&OPGW | ACSR&OPGW | ACSR&OPGW | ACSR&OPGW | OPGW | HTLS |
| EN 50326 Compliant | Yes | Yes | Yes | Yes | Yes | Yes |
| IEC 61394 Compliant | Yes | Yes | Yes | Yes | Yes | Yes |
| IGB/T 36292 Compliant | Yes | Yes | Yes | Yes | Yes | Yes |
Typical Applications
OPSTECH OPGW Overhead Conductor Greases are widely used in:
- OPGW cable manufacturing
- Extra High Voltage (EHV) transmission lines
- Ultra High Voltage (UHV) power projects
- Utility communication networks
- Smart Grid infrastructure
- Coastal transmission systems
- Mountain and high-humidity environments
- Industrial pollution areas
- Transmission line upgrades and maintenance projects
How OPGW Grease Protects the Cable
Inside an OPGW cable, protective grease fills the internal voids and coats metallic components to create an effective barrier against moisture and oxygen.
This protection helps to:
- Block water migration inside the cable
- Prevent oxidation of metallic components
- Reduce galvanic corrosion
- Minimize internal wear caused by environmental exposure
- Maintain long-term cable durability and transmission reliability
