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1.Product Introduction
The Heat-shrinkable stress control tube refers to a casing used to shield the electrical stress at the termination of a cable. A new theory of stress control for high voltage cable terminal is developed, and a heat shrinkable stress control tube with appropriate impedance value is developed. Heat shrinkable stress tubes can be prepared for cables with different voltages and cross sections. The test proves that the electrical and thermal properties are stable and reliable even after regular operation. The cable terminal designed by heat-shrinkable semiconductor stress tube can meet various test standards.
2.Product Parameter (Specification)
Technical Specification | |
Test Item | Parameters |
Hardness (Shaw A) | 90 |
Tensile Strength (MPa) | ≥12 |
Elongation at Break (%) | ≥400 |
Volume Resistivity (Ω.cm) | ≥1*1014 |
Breakdown Strength (kV/mm) | ≥25 |
Permittivity (ε) | ＜2.5 |
Shrinkage Temperature (℃) | 120~140 |
Radial Shrinkage Ratio (%) | 250 |
Length Shrinkage Ratio (%) | ±5 |
Oxygen Index (OI) | ≥27 |
3.Product Feature And Application
The function of the stress control tube is to evacuate the electrical stress at the outer shield cut at the end of the 10-35kV crosslinked power cable. The bending degree of the cable branch tends to be gentle. The base material of the stress control tube is usually polar polymer, and then the filler with high dielectric constant is added to achieve the effect of insulation and sealing.
1.Product Introduction
The Heat-shrinkable stress control tube refers to a casing used to shield the electrical stress at the termination of a cable. A new theory of stress control for high voltage cable terminal is developed, and a heat shrinkable stress control tube with appropriate impedance value is developed. Heat shrinkable stress tubes can be prepared for cables with different voltages and cross sections. The test proves that the electrical and thermal properties are stable and reliable even after regular operation. The cable terminal designed by heat-shrinkable semiconductor stress tube can meet various test standards.
2.Product Parameter (Specification)
Technical Specification | |
Test Item | Parameters |
Hardness (Shaw A) | 90 |
Tensile Strength (MPa) | ≥12 |
Elongation at Break (%) | ≥400 |
Volume Resistivity (Ω.cm) | ≥1*1014 |
Breakdown Strength (kV/mm) | ≥25 |
Permittivity (ε) | ＜2.5 |
Shrinkage Temperature (℃) | 120~140 |
Radial Shrinkage Ratio (%) | 250 |
Length Shrinkage Ratio (%) | ±5 |
Oxygen Index (OI) | ≥27 |
3.Product Feature And Application
The function of the stress control tube is to evacuate the electrical stress at the outer shield cut at the end of the 10-35kV crosslinked power cable. The bending degree of the cable branch tends to be gentle. The base material of the stress control tube is usually polar polymer, and then the filler with high dielectric constant is added to achieve the effect of insulation and sealing.
