{"id":118157,"date":"2026-08-15T22:46:55","date_gmt":"2026-08-15T19:46:55","guid":{"rendered":"https:\/\/gahzly.com\/?post_type=product&p=118157"},"modified":"2026-08-17T03:22:53","modified_gmt":"2026-08-17T00:22:53","slug":"%d8%b3%d9%84%d9%83-%d8%a7%d9%84%d8%b3%d9%85%d9%83%d8%aa%d9%8a%d9%86-%d8%b4%d8%b9%d8%b1-%d9%85%d8%ac%d8%af%d9%88%d9%84-%d9%86%d8%ad%d8%a7%d8%b3-4-%d8%b7%d8%b1%d9%81","status":"publish","type":"product","link":"https:\/\/gahzly.com\/en\/product\/%d8%b3%d9%84%d9%83-%d8%a7%d9%84%d8%b3%d9%85%d9%83%d8%aa%d9%8a%d9%86-%d8%b4%d8%b9%d8%b1-%d9%85%d8%ac%d8%af%d9%88%d9%84-%d9%86%d8%ad%d8%a7%d8%b3-4-%d8%b7%d8%b1%d9%81\/","title":{"rendered":"\u0633\u0644\u0643 \u0627\u0644\u0633\u0645\u0643\u062a\u064a\u0646 \u0634\u0639\u0631 \u0645\u062c\u062f\u0648\u0644 \u0646\u062d\u0627\u0633 4 \u0637\u0631\u0641"},"content":{"rendered":"

Expanded comprehensive technical guide: Semektein 4-core flexible copper cable<\/h1>\n

1. Introduction: The four-core cable revolution in modern installations<\/h3>\n

Semektein 4-core cable represents a high level of flexible wiring design. Previously, installations relied on separate wires bundled manually, often creating clutter in electrical panels. This four-core design combines four power or signal paths in one flat sheath, providing40% savings in installation space<\/strong><\/b>and giving technicians greater ability to organize wiring and apply accurate color coding.<\/p>\n

2. Microscopic specifications of the copper conductor (molecular level)<\/h3>\n

The copper used in this product ishigh-purity Grade A red copper<\/strong><\/b>.<\/p>\n

    \n
  • \n

    Strand construction:<\/strong><\/b>Each conductor consists of strands with diameters ranging from 0.2 mm to 0.5 mm, depending on the overall size. This fine-strand construction reduces the phenomenon of\u201ceddy currents\u201d<\/strong><\/b>that occurs in solid conductors.<\/p>\n<\/li>\n

  • \n

    Annealing process:<\/strong><\/b>The copper is heated in oxygen-controlled furnaces to provide excellent softness and flexibility. This allows the wire to bend at sharp angles without developing microscopic cracks that increase electrical resistance.<\/p>\n<\/li>\n<\/ul>\n

    3. Thermal chemistry of thermoplastic insulation (PVC compound)<\/h3>\n

    The outer and inner coverings are made from PVC formulated with chemical additives:<\/p>\n

      \n
    • \n

      Heat stabilizers:<\/strong><\/b>They prevent the insulation from becoming brittle and cracking at low temperatures or melting at elevated temperatures.<\/p>\n<\/li>\n

    • \n

      Antioxidants:<\/strong><\/b>They protect the plastic material from degradation caused by reaction with atmospheric oxygen.<\/p>\n<\/li>\n

    • \n

      Flame retardants:<\/strong><\/b>If sparking occurs, the insulation helps inhibit flame propagation; this is known as the self-extinguishing property.<\/p>\n<\/li>\n<\/ul>\n

      4. Four-core engineering and 3-Phase applications<\/h3>\n

      Despite its compact size, this cable performs well in light-load 3-Phase systems:<\/p>\n

        \n
      • \n

        Small motors:<\/strong><\/b>Such as motors for electric curtains, automatic doors, and small domestic water pumps.<\/p>\n<\/li>\n

      • \n

        Conductor allocation:<\/strong><\/b>3 conductors are assigned to the three phases and the fourth to neutral or earth.<\/p>\n<\/li>\n

      • \n

        Load balance:<\/strong><\/b>The parallel arrangement of the four conductors inside the sheath helps create thermal balance, distributing heat generated by current evenly across the flat cable surface.<\/p>\n<\/li>\n<\/ul>\n

        5. Smart control and communication applications<\/h3>\n

        In the era of smart homes, 4-core cable has become an important backbone for:<\/p>\n

          \n
        • \n

          Video intercom systems:<\/strong><\/b>Carrying audio, video, power, and door-release signals in one cable.<\/p>\n<\/li>\n

        • \n

          RGBW units:<\/strong><\/b>Operating colored lighting strips that require one line for each color\u2014red, green, and blue\u2014and a common power line.<\/p>\n<\/li>\n

        • \n

          Elevator sensors:<\/strong><\/b>Carrying stop and call signals between the car and the main control panel.<\/p>\n<\/li>\n<\/ul>\n

          6. Dynamic stress analysis<\/h3>\n

          This cable has been designed for repeated mechanical flexing. Its stranded conductors help it remain operational after thousands of bending cycles, making it suitable formoving machinery<\/strong><\/b>such as industrial printer heads or light robotic arms that require 4 power\/control lines.<\/p>\n

          7. Electrical losses and voltage drop<\/h3>\n

          When the four conductors are used over long distances, copper quality becomes especially important. This cable is designed to provide a low resistivity coefficient ($rho$<\/span> ).<\/p>\n

          \n

          Technical rule:<\/strong><\/b>If cable length exceeds 30 meters, increase the conductor size by one step\u2014for example, from 1 mm\u00b2 to 1.5 mm\u00b2\u2014to maintain stable voltage at the far end, especially in sensitive control systems.<\/p>\n<\/blockquote>\n

          8. Safety standards and factory testing<\/h3>\n

          Each roll of 4-core cable is tested using:<\/p>\n

            \n
          1. \n

            Continuity test:<\/strong><\/b>To verify that none of the four conductors contains a break.<\/p>\n<\/li>\n

          2. \n

            Voltage-withstand test:<\/strong><\/b>Applying up to 2000 V to confirm there is no electrical leakage between adjacent conductors.<\/p>\n<\/li>\n

          3. \n

            Weight test:<\/strong><\/b>To verify that the amount of copper in the cable matches international specifications, since weight is a primary indicator of copper content and quality.<\/p>\n<\/li>\n<\/ol>\n

            9. Economic impact: Why 4 cores are more economical<\/h3>\n

            Using one cable with 4 conductors provides significant savings:<\/p>\n

              \n
            • \n

              Time savings:<\/strong><\/b>Instead of pulling 4 individual wires, one cable is pulled, reducing installation time by 60%.<\/p>\n<\/li>\n

            • \n

              Fewer accessories:<\/strong><\/b>Fewer clips, conduits, and organizers are required.<\/p>\n<\/li>\n

            • \n

              Reduced waste:<\/strong><\/b>The chance of wiring errors is reduced thanks to clear color coding within a single cable.<\/p>\n<\/li>\n<\/ul>\n

              10. Environmental considerations and recycling<\/h3>\n

              We are committed to environmental responsibility; therefore, our PVC insulation is free of cadmium and lead. The internal copper is 100% recyclable, reducing the need for new raw-copper extraction and helping reduce global energy consumption.<\/p>\n

              11. Long-term maintenance and prevention guide<\/h3>\n
                \n
              • \n

                Visual inspection:<\/strong><\/b>Check annually that the outer sheath has not cracked due to extreme heat.<\/p>\n<\/li>\n

              • \n

                Connection points:<\/strong><\/b>In four-wire systems, make sure all terminal screws are securely tightened, because a loose connection on just one of the four conductors can disrupt the entire system, such as causing a motor to rotate in the wrong direction.<\/p>\n<\/li>\n

              • \n

                Rodent protection:<\/strong><\/b>It is preferable to route the cable inside corrugated conduit if it will pass through concealed areas above suspended ceilings.<\/p>\n<\/li>\n<\/ul>\n

                12. Conclusion: Investing in quality<\/h3>\n

                PurchasingSemektein 4-core stranded-copper flexible cable<\/strong><\/b>is a sound engineering decision. You are not simply buying a wire; you are investing in an integrated system that provides safety, flexibility, and ease of control. Whether you are a professional technician or a project owner, this cable helps ensure installations that can operate for decades without faults.<\/p>\n","protected":false},"excerpt":{"rendered":"

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