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20kV three-core cold shrinkable intermediate connector series for 12/20, 18/24kVThree-core polyethylene and cross-linked polyethylene power cables. Cold shrinkable cable accessories are made of imported liquid silicone rubber materials, which not only have very good electrical properties, but also have excellent physical characteristics such as water repellency, high elasticity, long service life and constant shrinkage pressure. Using cold shrinkable cable accessories, no need for open flame and special tools, just gently extract the plastic support strip, can automatically shrink and reset, installation is very convenient for work. It has good electrical and mechanical properties and can be used for a long time under various harsh environmental conditions. It has the advantages of light weight and easy installation. It is widely used in electric power, petroleum, chemical industry, metallurgy, railway, port and construction fields.