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Heat shrinkable cable accessories

  • Name:1KV four core intermediate joint

Summary:

Product Details

1KV, 10kV and 20kV, 35kV heat shrinkable power cable terminal head, middle joint series products, waterproof and stress control, insulation in one. With good electrical and mechanical properties, can be used in a variety of harsh environment conditions. It has the advantages of light weight and easy installation.. Widely used in electric power, petrochemical, metallurgy, railway and port construction. heat shrinkable cable accessories, commonly known as heat shrinkable cable head, widely used in the middle of the 35kV and heat shrinkable cable accessories of heat shrinkable cable accessories following voltage XLPE cable or oil filled cable connection and terminal. Compared with the traditional cable accessories, has the advantages of small size, light weight, safe and reliable, easy installation, etc.. Product conforms to the standard of GB11033, long-term use temperature range is between 55 and 105 DEG C, for as long as 20 years, radial shrinkage rate is more than or equal to 50%, the longitudinal shrinkage rate & lt; 5%, the shrinkage temperature of 110 DEG C ~ 140 DEG C aging. materials is generally composed of polyethylene, vinyl acetate ethylene (EVA) and ethylene propylene rubber or other material components of the blend.

this kind of product mainly uses the stress tube to handle the stress concentration problem. The stress concentration of electric field is alleviated by using the parameter control method. The main advantages of

are portable, easy installation and good performance.. Cheap price.  

stress tube is a volume resistivity of moderate (node on Omega - cm), high dielectric constant (20 -- 25) special electrical parameters of heat shrinkable tube, using electrical parameter forcing cable insulation shielding fracture stress evacuation along the stress distribution more uniform. This technology can only be used in 35kV and following cable accessories. Because the voltage level is high, the stress tube will heat and not work.

the key technology is: to ensure that the electrical parameters of the stress tube must meet the above standard value can work. in addition to pay attention to use silicone grease filled cable insulation surface semi conducting layer of the air gap to exclude the gas, to reduce the partial discharge. XLPE cable because of poor internal stress treatment in operation will occur larger contraction and installation accessories attention stress pipe and insulation shielding build not less than 20mm, in order to prevent shrinkage stress pipe and the insulating shielding from. heat shrinkable accessories for less flexibility, the operation of heat expansion and cold contraction may make the interface generates the gap, thus sealing technology is very important, in order to prevent the ingress of moisture.


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