The J50 High-voltage EPR Rubber Tape is a premium-grade insulating solution engineered for critical electrical applications. Specifically designed for the docking and termination of high-voltage cables, this tape ensures superior dielectric strength and mechanical protection. It is ideally suited for solid medium main insulation recovery for cables ranging from 600V up to 138kV, providing a reliable barrier against electrical failure in demanding industrial environments.
Crafted with high-performance Ethylene Propylene Rubber (EPR), the J50 series is built to withstand extreme thermal stress, with an emergency overload temperature capacity of up to 130°C. Its advanced formula ensures that physical and electrical properties remain stable even under drawing tension. To facilitate seamless installation, the tape features a specialized non-stick release paper, allowing for efficient unrolling and precise application across all solid dielectric cable insulation layers.
Detailed Parameters
| Tensile Strength | ≥1.7 Mpa (GB/T 528) | Elongation at Break | ≥500 % (GB/T 528) |
|---|---|---|---|
| Dielectric Strength | ≥28 kV/mm (GB/T 1695) | Volume Resistivity | ≥1x10¹⁴ Ω·cm (GB/T 1692) |
| Dielectric Loss Tangent | ≤0.05 (GB/T 1693) | Dielectric Constant | ≤5.0 (GB/T 1693) |
| Self Viscosity | No loosening (JB/T 6468) | Heat-resistant Cracking | No cracking (JB/T 6468) |
| Max Heat Resistance | 130 ℃ (JB/T 6468) | Standard Thickness | 0.76 mm |
Key Advantages
High Voltage Insulation
Optimized for solid medium cables from 600V to 138kV, providing industry-leading dielectric strength.
Thermal Stability
Capable of handling emergency overload temperatures up to 130°C without compromising performance.
Superior Elasticity
With elongation at break ≥500%, it adapts perfectly to irregular cable surfaces for a tight seal.
Mechanical Protection
Provides a robust outer layer that protects sensitive insulation from physical abrasion and impact.
Ease of Application
Equipped with special release paper to prevent sticking during unrolling, ensuring fast installation.
Certified Reliability
Tested under GB/T and JB/T standards to ensure consistency in high-risk electrical environments.
Product Gallery
Management Platforms
Inventory Control
Standard sizes (19mm to 50mm) available for rapid dispatch and stock management.
Custom Fabrication
Other sizes and customized cores are available upon request to meet specific project needs.
Quality Assurance
Strict adherence to GB/T and JB/T testing methods for every batch produced.
Safety Compliance
Engineered to exceed safety requirements for high-voltage cable termination.
Packaging Logistics
Secure, professional packaging designed to prevent deformation during international transit.
Technical Support
Expert guidance provided for the correct application and wrapping of EPR rubber tapes.
Investment Return Comparison
| Metric | Standard PVC Tape | J50 EPR Rubber Tape |
|---|---|---|
| Voltage Capacity | Low to Medium | Up to 138kV High Voltage |
| Heat Resistance | Standard (up to 80°C) | Emergency 130°C |
| Dielectric Strength | Moderate | High (≥28 kV/mm) |
| Installation Speed | Slow (sticky residue) | Fast (Non-stick release paper) |
| Lifecycle Cost | High (Frequent replacement) | Low (High durability/long life) |
Frequently Asked Questions
It is primarily used for the docking and termination of high-voltage cables, as well as the main insulation recovery for solid medium cables between 600V and 138kV.
Yes, the J50 tape is designed to handle emergency overload temperatures reaching up to 130°C without cracking or losing its insulating properties.
The specialized release paper ensures that the tape does not stick to itself during unrolling, allowing for a smoother, faster, and more precise application process.
Yes, it is designed to be compatible with all solid dielectric cable insulation layers, providing both electrical insulation and mechanical protection.
Standard widths include 19mm, 25mm, 38mm, and 50mm. Custom sizes and core dimensions are also available upon contacting the factory.
With an elongation at break of ≥500%, the tape can be stretched tightly around the cable, eliminating air gaps and ensuring a seamless, watertight insulating seal.
