[XingTai, China] – In the world of medium-voltage power distribution, reliability isn't just a feature—it's an absolute requirement. At [Your Company Name], we understand that the backbone of any robust electrical network is built with cables engineered to perfection. Today, we pull back the curtain on the manufacturing journey of one of our workhorse products: the YJV22-15KV-3*240 cable.

This cable, designed to carry 15,000 volts with three 240 mm² copper conductors, is a marvel of modern electrical engineering. But its true strength lies in the meticulous processes that create it.

Our journey begins with high-purity, oxygen-free copper. Using state-of-the-art stranding machines, we precisely weave multiple fine copper wires into a flexible yet robust 240 mm² conductor. This process, known as concentric stranding, ensures optimal electrical performance while providing the flexibility needed for installation over rollers and around bends. Each conductor is meticulously cleaned and inspected to guarantee a flawless, oxide-free surface—the first critical step towards minimal electrical loss.Phase 2: The Critical Shield – XLPE Insulation and Triple-Layer Co-extrusion

This is where the cable's high-voltage capability is born. Each copper core is fed through a cutting-edge triple-layer co-extrusion line. Here, three distinct layers are applied simultaneously in a single, seamless operation:

This co-extrusion technology is vital. By applying all three layers at once, we eliminate microscopic air gaps or impurities that could become points of failure, ensuring a perfectly uniform electrical field.

The three insulated cores are then precisely cabled together. They are helically laid around a filler material to form a symmetrical, round core, which is then bound by a non-hygroscopic tape. Next, an extruded inner sheath, or bedding, is applied. This layer serves as a cushion, protecting the delicate cores from the next critical component: the steel armor.

The "22" in YJV22 signifies a robust steel tape armor. Two galvanized steel tapes are applied in a helical overlap, forming a formidable mechanical shield. This armor protects the cable from crushing, rodent damage, and other external stresses, making it ideal for direct burial and demanding industrial environments.Phase 4: The Final Guard – The PVC Sheath

The final step is the application of the outer sheath. We use a specially formulated Polyvinyl Chloride (PVC) compound, chosen for its durability, resistance to chemicals, moisture, and abrasion. The sheath is extruded over the armor, completing the cable's tough exterior profile. Throughout this process, laser micrometers and online monitoring systems continuously check the diameter and thickness to ensure compliance with the strictest international standards.

The YJV22-15KV-3*240 is more than just a cable; it is the product of precision engineering, advanced materials, and unwavering quality control. It is engineered to deliver uninterrupted power to distribution networks, industrial plants, and large commercial complexes for decades to come.

At Ninglan Cable Co.,Ltd, we believe that strength comes from within. From the first strand of copper to the final meter of sheath, every step is a testament to our commitment to empowering a more resilient and connected world.

Ninglan Cable is a leading manufacturer of high and medium-voltage power cables. With a focus on innovation and quality, we provide reliable solutions for global infrastructure, renewable energy, and industrial applications.