The Rigid Shielded Cable U-1000 series, including Rvfv, Vvfv, and their K-models (Rvfv-K, Vvfv-K) with 3X95+70 mm² specifications, are rigid shielded cables designed specifically for high-voltage and strong electromagnetic environments. They combine stable power transmission performance with excellent anti-interference capabilities, widely used in industrial control, energy transmission, and large-scale buildings—scenarios where high stability of signals and power is strictly required. In terms of specification parameters, this series of cables has a rated voltage of U-1000V, suitable for medium and high-voltage power distribution systems and precision control circuits. The 3X95+70 mm² structure design includes 3 cores of 95mm² as phase conductors and 1 core of 70mm² as a neutral or grounding conductor, meeting the current distribution requirements of three-phase unbalanced loads. At an ambient temperature of 25℃, the long-term allowable current-carrying capacity of each 95mm² conductor is approximately 230A, and the 70mm² conductor is about 180A. Corresponding to a three-phase 380V system, the power can reach approximately 150kW, sufficient to support the stable operation of high-power loads such as large motors and high-frequency equipment. The outer diameter of the cable is about 65mm, among which the insulation layer (PVC or XLPE depending on the model) has a thickness of about 2.5mm. The shielding layer, made of copper tape or tinned copper braid, is approximately 0.3mm thick, and the outer sheath (usually PVC or low-smoke zero-halogen material) has a thickness of about 3.0mm. The rigid structural design results in a minimum bending radius of 15 times the outer diameter (about 975mm), suitable for fixed laying scenarios. In addition, the cable can withstand short-term temperatures up to 105℃, with a shielding effectiveness of ≥85dB, effectively blocking external electromagnetic interference (EMI) and radio frequency interference (RFI) to ensure the purity of signal and power transmission. In terms of materials and structure, the conductors are made of high-purity electrolytic copper (purity ≥99.95%), processed through a compact stranding process to improve conductor density and conductivity. The DC resistance (at 20℃) is ≤0.193Ω/km for 95mm² and ≤0.268Ω/km for 70mm², reducing transmission loss. The insulation layer varies by model: the Rvfv series uses flexible PVC, offering good flexibility; the Vvfv series adopts XLPE, which has better temperature resistance (long-term working temperature of 90℃). The shielding layer is a core feature: ordinary models (Rvfv, Vvfv) use copper tape wrapped shielding, while K-models (Rvfv-K, Vvfv-K) feature a composite shielding of tinned copper braid + aluminum foil. This dual protection enhances anti-interference ability, especially suitable for scenarios where high-frequency signals and power are transmitted in parallel. The outer sheath is made of rigid PVC or LSZH material, with wear resistance, oil resistance, and UV resistance. It also provides mechanical support to maintain the cable's rigid structure, preventing shielding layer failure due to external extrusion. In terms of characteristic applications, this cable performs prominently in industrial automation. It can be used as a composite transmission line for power and signals in CNC machine tools and robot workstations, where the shielding layer prevents interference from high-frequency motor operation from affecting control signals. In the energy industry, it is used for connecting combiner boxes to inverters in wind farms and photovoltaic power stations, withstanding outdoor high and low temperatures (-40℃ to 80℃) and strong electromagnetic environments. In large buildings, it serves as the main cable in smart buildings, transmitting power and signals for security and fire protection systems simultaneously. The shielding layer prevents signal crosstalk between different systems. In the rail transit field, it is suitable for traction auxiliary systems of subways and light rails. The rigid structure adapts to vibrating environments, and the shielding effectiveness ensures the stable operation of train control systems. Additionally, in power supply lines of medical equipment (such as MRI and CT machines), its low electromagnetic radiation characteristics can avoid interfering with the detection accuracy of precision instruments. Compared with ordinary non-shielded cables, the advantages of this series are: the rigid structure improves laying stability, reducing poor contact caused by deformation; the multi-layer shielding design achieves efficient anti-interference, suitable for complex electromagnetic environments; the 3X95+70 mm² specification balances high-power transmission and grounding/neutral line needs, simplifying wiring. However, it should be noted that the rigid structure makes bending difficult, requiring sufficient space during laying, and the braided shielding layer of K-models must be properly grounded to achieve optimal performance. In conclusion, the Rigid Shielded Cable U-1000 Rvfv, Vvfv, and their K-models with 3X95+70 mm² specifications, with their suitable specifications, reliable shielding performance, and rigid structure, have become ideal choices for coordinated transmission of power and signals in strong electromagnetic environments, providing key guarantees for high-precision operations in industrial, energy, construction, and other fields.