Semi conductive water blocking filler rope plays a crucial role in the transmission of high-voltage power over long distances. It is a key component in the manufacturing of underground and submarine cables, where water ingress can pose a significant threat to the electrical integrity of the cable. The semi conductive property of the filler rope ensures that the electrical field is distributed evenly across the cable insulation, reducing the risk of electrical breakdown. The water-blocking feature of the rope prevents moisture from entering the cable core, reducing the risk of insulation damage and extending the lifespan of the cable. In addition to its protective properties, the semi conductive water blocking filler rope also enhances the performance of high-voltage cables by reducing signal distortion and improving the quality of power transmission. The use of semi conductive water blocking filler rope in power transmission is therefore critical to ensuring reliable and efficient delivery of electrical power.