The 0.6/1 Kv PVC insulated and sheathed Nyby double steel tapes armoured cable is a low-voltage power transmission cable integrating multiple protections and stable performance, specially designed for power distribution in complex environments. Its unique structural design and material selection enable it to show significant advantages in mechanical protection, insulation performance and applicable scenarios, and it is widely used in industrial, civil and outdoor occasions.​ In terms of specification parameters, the rated voltage of the cable is 0.6/1 Kv, which perfectly fits the low-voltage power distribution system and can meet the power transmission needs of most industrial equipment, buildings and outdoor facilities. Its conductor usually uses high-purity electrolytic copper, and common specifications cover multi-core structures, such as 4×25mm², 4×50mm², 4×70mm², etc., to adapt to different power transmission requirements. Taking the 4×50mm² specification as an example, at an ambient temperature of 25℃, the long-term allowable current-carrying capacity of each core is about 150A, corresponding to a power of about 33kW, which is sufficient to support the stable operation of medium-sized electrical equipment clusters. The outer diameter of the cable varies according to specifications. Taking 4×50mm² as an example, the outer diameter is about 45mm, among which the PVC insulation layer thickness is about 1.8mm, the inner PVC sheath thickness is about 2.0mm, the outer steel tape armouring thickness is about 0.5mm, and the outermost PVC sheath thickness is about 2.2mm. The overall structure is compact, ensuring good mechanical strength and insulation performance. In addition, the cable's short-circuit withstand temperature can reach 80℃, and it can maintain stable operation under short-term overload conditions, ensuring the continuity of power transmission.​ In terms of materials and structure, the core advantage of the cable lies in the "double protection" design. The conductor is made of electrolytic copper with a purity of ≥99.9%, which has excellent conductivity, reduces transmission loss, and has good ductility, making it easy to bend and lay. Both the insulation layer and the inner sheath are made of PVC material. The PVC insulation layer can work for a long time in a 70℃ environment, with high insulation resistance, effectively preventing electric leakage; the inner sheath further enhances the insulation performance and provides an attachment basis for the steel tape armouring. The middle double steel tape armouring is its core protective structure, which is made of high-strength cold-rolled steel tape, formed by spiral winding or longitudinal wrapping process. It can not only resist external mechanical impact, extrusion and puncture, but also enhance the tensile strength of the cable, making it suitable for various laying methods such as direct burial, pipe 穿，or overhead. The outermost PVC sheath has weather resistance and corrosion resistance, which can protect the armoured layer from moisture, ultraviolet rays and chemical erosion, and prolong the service life of the cable.​ In terms of characteristic uses, relying on the strong protection of steel tape armouring, the cable performs well in outdoor and complex environments. In industrial plants, it can be used for connecting lines between workshops and outdoor equipment, such as connecting water pumps, fans and other open-air installed machinery, resisting heavy object rolling or equipment collision; in municipal engineering, it is suitable for underground direct burial power distribution trunks, such as community power distribution and street lamp system power supply, withstanding soil pressure and groundwater erosion; in the construction field, it can be used as vertical power distribution cable in high-rise buildings, laid along cable shafts, bearing its own weight and possible external impact; in addition, in agricultural irrigation systems, temporary construction sites and other scenarios, its durability and easy maintenance can also meet long-term use needs.​ Compared with ordinary PVC cables, the Nyby steel tape armoured cable has a significant advantage in the leap of mechanical protection ability, which can adapt to harsher laying environments and reduce faults caused by external damage; at the same time, it retains the characteristics of low cost and convenient processing of PVC materials, combining economy and reliability. However, its weight is higher than that of ordinary cables, so mechanical assistance is needed during laying, and PVC materials still have the limitation of releasing gas at high temperatures, so they are not suitable for high-temperature places or places with extremely high fire protection levels.​ In conclusion, the 0.6/1 Kv PVC insulated and sheathed Nyby double steel tapes armoured cable, with its reasonable specification design, solid armoured structure and wide applicability, has become an ideal choice for dealing with complex environments in low-voltage power distribution systems, providing a solid guarantee for the safety and stability of power transmission.