Find the outer diameter of the YJV cable and the required diameter
The stress pipe is the effect of dispersing the electric stress without breaking the main insulation layer
In order to make the cable reliable operation, the stress pipe in the cable head is very important
High-voltage cables have a grounded (copper) shield outside each phase core, and a radially distributed electric field is formed between the conductive core and the shield In other words, the electric field of the normal cable is only from the (copper) wire along the radial (copper) shield of the power line, there is no core axis of the electric field (power line), electric field distribution is uniform When the cable head is made, the shield is stripped and the original electric field distribution of the cable is changed, resulting in an extremely detrimental tangential electric field (the power line along the conductor) The power line stripped of the shielded core is concentrated at the fracture of the shield Then the crack at the shield is the most likely breakdown of the cable parts (Electric stress), the electrical stress control tube (referred to as the electric stress control tube) with a dielectric constant of 20 to 30 and a volume resistivity of 108 to 1012 Ω ? cm is used to disperse the concentrated power line Stress pipe), set in the shield fracture, to break the fracture of the electric field stress (power line), to ensure reliable operation of the cable
