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Avoid Manufacturing Defect HT Cables & Ensure TPI Before Dispatch

Using defective 11kV HT Armored 185 Sq mm cables in projects can lead to performance failures, safety risks, and system breakdowns. To prevent such issues, it is essential to avoid manufacturing defects and conduct Third-Party Inspection (TPI) before dispatch.

Common Manufacturing Defects in HT Cables

• Conductor Defects: Poor stranding, incorrect conductor size, and voids can cause overheating and reduced conductivity.
• Insulation Issues: Low-quality XLPE/EPR insulation, voids, or uneven thickness may lead to partial discharge and dielectric failure.
• Screening Problems: Poorly applied semiconducting layers or discontinuous copper tape can create electrical stress and interference.
• Armoring & Sheathing Defects: Weak armoring or poor outer sheaths reduce mechanical strength and environmental resistance.
• High-Voltage Testing Failures: Non-compliance with electrical standards, poor insulation resistance, and partial discharge failures indicate potential risks.
• Moisture Ingress: Improper sealing and water treeing in XLPE insulation can cause insulation breakdown over time.
• Process Defects: Uneven extrusion, contamination in insulation, and improper annealing lead to brittle conductors and reduced cable life.

Preventive Measures

• Strict Quality Checks: Verify conductor size, insulation thickness, and high-voltage test compliance.
• Third-Party Inspection (TPI) Before Dispatch: Ensures cables meet required standards before reaching the project site.
• Proper Sealing & Moisture Protection: Prevents degradation and extends cable lifespan.

By eliminating manufacturing defects and conducting TPI, projects can ensure safe, efficient, and long-lasting HT cable performance.