In different high voltage crosslinked cable laying situation how to choose the metal sleeve & # 45; - - China aerospace electrical group Electric wire

In different high voltage crosslinked cable laying situation how to choose the metal sleeve & #; & #; China aerospace electrical group to send to the different high voltage crosslinked cable laying situation how to choose the metal sleeve & #; & #; China aerospace electrical group zhdljyw & lt; Div> in different high voltage crosslinked cable laying situation how to choose the metal sleeve China aerospace electrical group & lt; / div> < div>【 The cable network news 】 High voltage crosslinked cable usually adopt three metal sleeve, which lead set, corrugated aluminium sheath and aluminum-plastic composite armor layer. For a long time, about lead set, corrugated aluminium sheath and aluminum-plastic composite armor layer of three kinds of high voltage crosslinked cable metal sleeve selection problem has always been controversial, have different views, such as: & lt; / div> < div> & lt; / div> < Div> (1) some people think that, high voltage crosslinked cable metal sleeve must be seamless is better than a seam, continuous extrusion than continuous extrusion. Then, a large number of cable works at a huge sum of money to import lead continuous pressure machine, pressure machine aluminum or aluminum extruding machine. < / div> < div> & lt; / div> < Div> 2. Others said that, worldwide, that allows the use of corrugated aluminium sheath of electric power line, are applied in promoting welding corrugated aluminium sheath power cable. Such as the south wire company's high pressure and ultrahigh pressure crosslinking cable, switch have almost all the welding corrugated metal sleeve structure. So, a lot of domestic cable factory in welding corrugated equipment is used to adhere to. < / div> < div> & lt; / div> < Div> in fact, the high voltage crosslinked cable metal sleeve according to the different situation has different choice of cable laying. The sea bottom in the lead for power cable line, high underground water level and strong corrosion occasion; Besides must use the lead set of occasions, directly buried installation in general, can choose smooth or corrugated aluminium sheath; Lu: su composite armor layer is suitable for the cable tunnel and cable route of pipelines of sandwich, and waiting for the external force damage probability is small, short circuit capacity small, dry places. < / div> < div> < /div>