Medium voltage cable cold shrinkage terminal

Brand:Dosense Cable

Category:Cable Accessories

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Medium voltage cable cold shrinkage terminals are specialized connectors used to terminate medium voltage cables without the need for heat or flame during installation. They use a pre-expanded elastomeric sleeve that contracts when a support core is removed, providing a secure and insulated connection. Below is a general overview of the materials commonly used in medium voltage cable cold shrinkage terminals and some typical technical data associated with them:

Materials Used in Medium Voltage Cable Cold Shrinkage Terminal:

Cold Shrink Tubing: This is the main component of the terminal. It is made of elastomeric material that has been pre-stretched and held in place by a removable support core. When the core is removed, the tubing shrinks to its original size, tightly sealing the cable and forming a secure connection.

Insulating Material: The cold shrink tubing is designed to provide electrical insulation and environmental protection to the cable joint.

Stress Control Components: Similar to heat shrink joints, cold shrink terminals might include stress control materials to distribute electrical stress and prevent corona discharge.

Mastic and Sealing Materials: Some cold shrink terminals include mastic or sealing materials to enhance moisture resistance and provide additional protection.

Typical Technical Data Associated with Medium Voltage Cable Cold Shrinkage Terminal:

Voltage Rating: Specifies the range of voltages that the terminal is designed to handle, usually expressed in kilovolts (kV). Common voltage ratings for medium voltage terminals might be 6 kV, 11 kV, 20 kV,or 33 kV.

Temperature Range: Indicates the operating temperature range that the terminal can withstand without degradation of its electrical or mechanical properties.

Diameter Range: Specifies the range of cable diameters that the terminal can accommodate. Cold shrink terminals are often designed to fit a range of cable sizes.

Dielectric Strength: This refers to the maximum electric field that the insulation material can withstand without breaking down. It's typically measured in volts per unit thickness (e.g., kV/mm).

Tensile Strength: Indicates how much force the terminal can withstand before breaking. Expressed in pounds per square inch (psi) or Newtons per square millimeter (N/mm²).

Elongation at Break: Measures how much the terminal can stretch before breaking, expressed as a percentage.

Water Absorption: The amount of water the terminal material can absorb over time, which can affect its insulating properties.

Flame Retardancy: Some terminals may be designed to have flame-retardant properties to enhance safety.