The J30 High-Voltage EPR Rubber Tape is a professional-grade insulating solution engineered for critical electrical applications. Specifically designed for the main insulation restoration of solid dielectric cables ranging from 600V to 35kV, this tape ensures maximum reliability when creating stress cones or restoring jackets on intermediate joints and terminals.
Combining superior dielectric strength with excellent moisture-proof sealing capabilities, the J30 tape is indispensable for bus insulation and cable end sealing. To achieve optimal performance, it is recommended to stretch the tape to 3/4 of its original width during application and apply an outer layer of PVC electrical tape for enhanced mechanical protection.
Detailed Parameters
| Tensile Strength | ≥1.3 Mpa (GB/T 528) | Elongation at Break | ≥500 % (GB/T 528) |
|---|---|---|---|
| Dielectric Strength | ≥20 kV/mm (GB/T 1695) | Volume Resistivity | ≥1x10⁴ 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 Resistance | 100 ℃ (JB/T 6468) |
| Stress Cracking | No cracking (JB/T 6468) | Thickness | 0.76mm |
Key Advantages
High Voltage Resistance
Engineered to handle 600V to 35kV, providing critical insulation for solid dielectric cables.
Thermal Stability
Maintains structural integrity and performance at temperatures up to 100°C.
Exceptional Elasticity
With over 500% elongation, it ensures a tight, custom fit for complex cable shapes.
Moisture Protection
Creates an airtight, waterproof seal to prevent electrical failures caused by humidity.
Self-Amalgamating Bond
Strong self-viscosity ensures no loosening over time, reducing maintenance cycles.
Industry Compliant
Tested under strict GB/T and JB/T standards for guaranteed industrial safety.
Product Gallery
Management Platforms
Inventory Precision
Streamlined tracking for various widths (19mm to 50mm) ensuring zero stock-outs.
Quality Control
Strict adherence to GB/T testing protocols for every production batch.
Application Support
Technical guidance on stretching ratios (3/4 width) for maximum insulation.
Custom Sizing
Flexible factory options for specialized widths and core diameters.
Logistic Efficiency
Rapid dispatch of standard sizes (19mm, 25mm, 38mm, 50mm) globally.
Compliance Audit
Full documentation provided for dielectric and resistivity verification.
Investment Return Comparison
| Feature | Standard Rubber Tape | J30 High-Voltage EPR |
|---|---|---|
| Voltage Range | Low to Medium Voltage | Up to 35kV High Voltage |
| Durability | Standard Wear | High Heat/Stress Resistance |
| Sealing Ability | Basic Wrap | Advanced Moisture-Proof Seal |
| Installation | Simple Overlay | Precision Stretch Application |
| Life Cycle | Frequent Replacement | Extended Long-term Stability |
Frequently Asked Questions
It is primarily used for the main insulation restoration of 600V-35kV solid dielectric cables, jacket restoration of joints/terminals, and moisture-proof sealing of electrical connections.
When wrapping, you should stretch the tape so that it reaches 3/4 of its width before stretching. For mechanical protection, wrap PVC electrical tape over the J30 layer.
Yes, the J30 EPR tape is designed for heat resistance up to 100°C and shows no cracking under heat-resistant stress testing according to JB/T 6468.
Standard widths include 19mm, 25mm, 38mm, and 50mm, with lengths varying from 5m to 9.1m. Custom sizes and cores are available upon request from the factory.
Yes, it is specifically recommended for bus insulation and cable end seals due to its high dielectric strength and self-viscosity.
The product is tested and compliant with GB/T 528, GB/T 1695, GB/T 1692, GB/T 1693, and JB/T 6468 standards.
