Why SP-SCXL-9999-HV is the Ideal Semiconductive Shielding Compound for 154kV Power Cables
High-voltage cables are the backbone of modern power infrastructure. Whether transmitting electricity across long distances or linking renewable energy sources to the grid, these cables are expected to perform with high reliability and efficiency under demanding conditions. One of the most critical aspects of cable design is the shielding compound used to manage electrical stress and ensure insulation integrity.
At Shakun Polymers, we have developed SP-SCXL-9999-HV, a semi-conductive compound specifically engineered for high voltage cable shielding applications up to 154kV. This blog explains why this compound is ideally suited for such applications and how it delivers performance that meets the highest industry expectations.
What is a Semi-Conducting Cross-Linkable Shielding Compound?
A shielding compound is a specially formulated material applied over the conductor and beneath the insulation of high-voltage power cables. Its role is to:
- Control the electrical field distribution
- Smooth layering without protrusions, voids and impurities
- Improve the interface between the conductor and insulation.
A semi-conductive compound provides a controlled conductivity path, which helps manage the cable’s internal electric field. When cross-linkable, the compound can be cured to form a stable, durable structure significantly enhancing its mechanical and thermal properties. Surface smoothness is equally important, as it ensures the insulation layer remains defect-free and maintains dielectric strength.
Technical Features of SP-SCXL-9999-HV
SP-SCXL-9999-HV is not a standard formulation; it is the result of focused R&D aimed at providing long-term, stable shielding for high-voltage systems. Here are the key technical highlights:
- Designed for 154kV applications: Suitable for high voltage cables used in critical infrastructure.
- Exceptional surface smoothness: Ensures an optimal interface between the conductor and insulation, minimising partial discharge risks.
- Good electrical conductivity: Maintains field control and efficient shielding across voltage loads.
- Thermal stability: Remains structurally and electrically stable even under high temperature operations and overloads.
- Environmental resistance: Resists ageing due to moisture, oxidation, and other environmental stressors.
Applications in High Voltage Cable Systems
Our SP-SCXL-9999-HV compound is used across a wide range of sectors where high-performance cable insulation is non-negotiable:
- Power transmission networks: Ensuring efficient and safe electricity flow over long distances.
- Renewable energy infrastructure: Supporting grid connections from wind farms, solar plants, and hydro stations.
- Industrial facilities: Heavy-duty plants requiring an uninterrupted high-voltage supply in harsh conditions.
Its adaptability and proven performance make it a go-to high-voltage cable shielding compound for critical operations.
Benefits of Using SP-SCXL-9999-HV
Choosing SP-SCXL-9999-HV as your shielding solution comes with several key benefits:
- Enhanced reliability: Designed to perform consistently under high electrical and thermal stress.
- Longevity and durability: Cross-linked structure offers extended life with reduced ageing.
- Thermal protection: Maintains integrity under standard operating heat scenarios, reducing insulation failure risks.
- Improved insulation bonding: Superior surface finish ensures excellent adhesion with insulation layers.
- Operational safety: Reduces partial discharge and ensures better overall cable performance.
Industry Compliance & Standards
We understand the importance of meeting global benchmarks for high-voltage cable materials. SP-SCXL-9999-HV has been developed to comply with rigorous standards, including:
- IEC 60840 and IEC 62067 for high-voltage power cable systems
- Type-tested under simulated operating conditions
- Verified for electrical resistivity, thermal ageing, elongation, and shrinkage limits
Our internal quality systems also ensure consistency across batches and long-term performance predictability.
How to Choose the Right Shielding Compound
Selecting the correct shielding compound is vital to long-term cable system performance. We recommend considering:
- Processing Performance: Scorch free, stable extrusion on a longer continuous extrusion.
- Voltage class: Ensure the compound is tested and validated for the intended voltage range.
- Operating temperature: Must offer thermal stability under real-world conditions.
- Mechanical stress: Should retain properties under bending, pulling, or flexing.
- Environmental exposure: Should withstand oxidation, UV, and humidity as per the deployment region.
Compared to many conventional shielding materials, SP-SCXL-9999-HV offers an ideal balance of conductivity, cross-linkability, and thermal endurance, making it a preferred semi-conductive compound for modern high-voltage projects.
Conclusion
At Shakun Polymers, we understand that cable shielding is not just about conductivity; it’s about longevity, safety, and consistent performance under pressure. SP-SCXL-9999-HV brings together the critical qualities required of a high voltage cable shielding compound, excellent surface smoothness, superior conductivity, thermal reliability, and robust mechanical strength.
If you’re seeking a solution that is engineered for the next generation of power systems, SP-SCXL-9999-HV is the compound that delivers—today and for the long run.
Get in touch with us to explore a solution tailored to your cable system’s needs.