Feichun FESTOONFLEX C-PUR-HF D12YC11Y Low Voltage Screened Round Cable PUR Sheathed for Festoon Application

Technical Specifications: A Closer Look at Engineering Excellence

At its core, the FESTOONFLEX C-PUR-HF D12YC11Y is built with precision to handle low voltage applications up to 0.6/1 kV, ensuring safe and efficient power delivery. Let's break down its key features, using cable technology terminology to highlight its sophistication.

Design Features: The conductor is made from plain copper, classified as flexible class 5 according to DIN EN 60228 / DIN VDE 0295. This means the strands are finely woven for maximum bendability without compromising conductivity. Insulation uses a halogen-free compound based on polyester, which prevents the release of toxic gases in case of fire—a critical safety aspect in confined industrial spaces.

Core identification varies: up to five cores are colored per DIN VDE 0293-308, while six or more use natural colors with black numbers for easy tracing. The cores or pairs are twisted with a short lay length around a central element, enhancing torsional resistance. For certain cross-sections, an additional polyurethane inner sheath provides extra protection. A braid of tinned copper wires forms the screen over this inner sheath, shielding against electromagnetic interference (EMI) that's common in motorized environments.

The outer sheath is polyurethane—halogen-free, flame-retardant, and black for opacity and UV resistance. This PUR sheathing is what sets it apart: polyurethane offers superior abrasion resistance, oil tolerance, and flexibility compared to PVC alternatives, making it perfect for dynamic applications.

Electrical Parameters: Rated at 0.6/1 kV, it supports max AC operating voltage of 0.7/1.2 kV and DC up to 0.9/1.8 kV. It passes a 4 kV AC test for five minutes, ensuring insulation integrity. Current carrying capacity follows DIN VDE 0298-4, with values like 138 A for a 1x25 mm² single-core variant when installed free in air at 30°C ambient.

Chemical Parameters: Fire resistance mimics IEC 60332-1, meaning it doesn't propagate flames easily. It's water-resistant for permanent submersion up to 50 meters (non-drinking water), ideal for wet industrial sites.

Thermal Parameters: Conductors handle up to 90°C continuously and 250°C during short circuits. Ambient temperatures range from -50°C to +80°C for fixed installs and -40°C to +80°C in flexible operation, covering extreme climates from arctic warehouses to tropical factories.

Mechanical Parameters: Max tensile load is 15 N/mm² on the conductor, with no torsional stress allowed to prevent twisting damage. The minimum bending radius is 6x the outer diameter (D), proven by flexing tests per HD 22.2 part 3.1. It supports travel speeds up to 210 m/min in festoon or chain systems, though longer chains may require slower speeds for reliability.

The cable comes in various configurations: single-core power cables (e.g., 1x25 mm² with 10.3-11.5 mm outer diameter, 330 kg/km weight), four-core (e.g., 4x1.5 mm² at 10.8-12 mm diameter), five-core, control cables (like 7x1.5 mm²), and screened pairs (e.g., 3x(2x1.5)C). Each has tailored specs, such as permissible tensile force (up to 3600 N for 1x240 mm²) and conductor resistance (e.g., 0.78 Ω/km at 20°C for 1x25 mm²).

These specs aren't just numbers—they represent a balance of physics and chemistry. The PUR sheath, for instance, leverages polymer science for elasticity, while the tinned copper screen uses Faraday's principles to block EMI, ensuring signal integrity in noisy industrial settings.

Usage Scenarios: Where Durability Meets Demand

The FESTOONFLEX C-PUR-HF D12YC11Y shines in scenarios requiring frequent bending and movement. Primarily, it's for festoon systems, where cables dangle from trolleys on overhead tracks, powering cranes in ports, warehouses, or assembly lines. Its screened design protects control signals from interference, vital for precise automation.

In drag lines—massive excavators in mining—it endures constant flexing as buckets scoop earth. Machine tools, like CNC mills, benefit from its halogen-free safety and high current capacity, preventing downtime from cable failures. Materials handling systems, such as conveyor belts in logistics hubs, use it for reliable energy transfer under vibration and dust.

Imagine a bustling factory: the cable snakes through a festoon, bending millions of times without fraying, thanks to its class 5 conductors and PUR sheath. In outdoor setups, its water and temperature resistance fend off rain or heat, extending lifespan and reducing maintenance costs.

The FESTOONFLEX C-PUR-HF D12YC11Y low voltage screened round cable PUR sheathed isn't just a product—it's a solution born from materials science, electrical engineering, and real-world demands. Its specs ensure reliability in festoon systems, drag lines, and beyond, while case studies from South Africa's mining and renewables sectors illustrate its role in tackling 2025 challenges like load shedding and infrastructure decay.

As industries evolve toward automation and sustainability, cables like this will be pivotal. Whether you're an engineer optimizing a factory or a policymaker eyeing green transitions, understanding such tech provides invaluable insights. In a world of constant motion, the D12YC11Y keeps things connected, durable, and forward-moving.