1、 熱縮電纜頭處理工藝是目前運用最廣泛的，制作成本低，技術(shù)成熟。熱縮電纜頭在接地和收縮工藝方面使用的是耐熱絕緣材料，溫度不能過(guò)高，否則會(huì )破壞絕緣。在電纜的屏蔽處理工藝上，由于半導體層去除的數量較多，導致電纜頭三相間沒(méi)有電磁屏蔽，也容易發(fā)生相位放電，可以通過(guò)熱縮絕緣材料起到屏蔽作用。熱縮絕緣材料可以完全包裹住線(xiàn)芯，缺點(diǎn)是彈性小，容易破裂。1. The heat shrink cable head treatment process is currently the most widely used, with low production costs and mature technology. The heat shrink cable head uses heat-resistant insulation materials in grounding and shrinkage processes, and the temperature cannot be too high, otherwise it will damage the insulation. In the shielding process of cables, due to the removal of a large number of semiconductor layers, there is no electromagnetic shielding between the three phases of the cable head, and phase discharge is also prone to occur. The shielding effect can be achieved through heat shrinkable insulation materials. Heat shrink insulation material can completely wrap around the wire core, but its disadvantage is that it has low elasticity and is prone to breakage.
2. Cold shrink cable heads have developed rapidly in recent years, with high production costs and a service life of about 2 years. For grounding and shrinkage processes, the cold shrink cable head does not require welding and can be directly fixed with spring steel clips. The insulation layer material has elastic shrinkage and does not need to be baked with fire, reducing the impact of temperature control errors on the quality of cable heads. In terms of shielding layer processing technology, the insulation layer removed from cold shrink cables is relatively small, and there is electromagnetic shielding between three-phase cables. Cold shrink cable material has good elasticity, is not prone to wrinkles, and is not easily broken under collision.
Cold shrink cable head and heat shrink cable head treatment processes have their own advantages and disadvantages. Users should choose a reasonable cable head treatment process according to their own needs to achieve power supply stability.
