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What causes cable wire aging? The most direct cause of cable and wire aging failure is the insulation is reduced and was broken. Lead to insulation reduction of many factors, according to the actual experience of electricians, summarized in the following cases. Insulation Moisture This reason is also very common, usually occurs in the direct burial or row of pipes in the cable joints. For example: unqualified production of cable joints and supermarkets in the climate conditions do joints, will make the joints into the water or mixed with water vapor, gradually damage the insulation strength of the cable and cable aging caused by the cable fire caused by electrical disasters. Chemical Corrosion Cable buried directly in the acid and alkali effect of the region, often resulting in the cable armor, lead skin or corrosion of the outer protective layer, the protective layer due to long-term chemical corrosion or electrolytic corrosion, resulting in the failure of the protective layer, the insulation is reduced, will also lead to cable failure. Long-term Overload Operation Overloading operation, due to the thermal effect of the cable, the load cable through the cable, such as leading to conductor heating, thereby increasing the temperature of the

Necessary Testing for Cable and Wire Cables and wires are critical industrial products, and their quality directly impacts the functionality of machinery and equipment. Poor-quality cables can overheat due to high current, posing risks like electrocution or fire. To prevent such hazards, manufacturers must conduct the following necessary tests before cables and wires leave the factory: 1. Electrical Testing This includes: Conductor DC resistance Insulation resistance Finished product voltage test Voltage test between insulated cores Conductor resistance directly reflects the electrical transmission performance of cables and wires, impacting temperature during operation, lifespan, voltage drop, and safety. This test examines the material and cross-sectional area of the conductor. If the conductor’s material is substandard or its cross-sectional area is insufficient, it will cause the conductor’s DC resistance to exceed the standard. This can result in overheating, which may accelerate insulation aging, leading to potential leakage, disconnection, or even fire. 2. Mechanical Testing Mechanical tests focus on: Tensile strength and elongation at break (before and after aging) Flexing test for flexible cables Bending test Load break core test Insulation core tear test Static flexing test The tensile strength and elongation at break, especially before and after aging, are key indicators of insulation

Difference Between Drag Chain Cable and UL2464 H05VV-F Cable Flexible drag chain cable is a flexible cable that can be used in regular industrial environments for moving back and forth in bending occasions, while ordinary multicore cable refers to copper-core PVC insulated PVC sheathed flexible wire, belonging to UL2464 cable or H05VV-F cable. The difference between these two kinds of cable lies in how they are used and selected during the process. First, from the point of view of our installation and use: Flexible drag chain cable is mainly suitable for continuous reciprocating movement, especially in conventional industrial environments under wet or dry conditions where high-frequency mobile installations are required. These include numerical control airport equipment, automation equipment, modern machinery components in drag chains, logistics systems, control systems, and mechanical automation systems, such as robotic arms, construction machinery, heavy machine shops, automobile manufacturing, lifting and transport equipment, automated warehouses, docks, and fire engines. Ordinary multicore cable is used for fixed installations or occasional movement without strong stress relief, such as electrical, instrumentation, and electronic equipment in indoor environments. It is often used for power lines, control lines, and signal transmission lines, specifically for burglar alarm systems, building intercom systems, etc.

How to Test the Cable Quality I am always be asked to show the quality of the cables. Here are a few good ways for how to test the cable quality.     1. Observe the Appearance of the Cable Packaging and Certificates Check the cable certificate report. Verify the certificate of conformity for: Factory name, address, inspection stamp, and production date. Trademark, specifications, and voltage printed on the wire.       2. Test the Cable’s External Characteristics Take a small section of the wire and bend it repeatedly. A superior quality cable should: Feel soft and flexible. Show good fatigue strength. The plastic or rubber insulation should feel elastic with no visible cracks.     3. Test the Cable Weight Good quality wire and cable should have a specified weight per 100 meters. For example: A 4.0mm² plastic insulated single-strand copper core wire should weigh between 4.4-4.6kg per 100 meters. If the weight is significantly less, this may indicate the copper core has too many impurities or that the cable length or cross-section is below standard.   AWG No. of Cores x Nominal Cross Sectional Area Nominal Thickness of Insulation Nominal Overall Diameter Nominal Copper Weight Nominal Weight

Drag Chain Cable Preface Drag chain cables are primarily used in industrial electronic systems, automatic generation lines, storage equipment, robots, fire-fighting systems, cranes, CNC machine tools, and the metallurgical industry. In these specific applications, cables need to move back and forth with the equipment. To prevent cable entanglement, wear and tear, breakage, and scattering, cables are often placed inside cable drag chains, providing protection while allowing flexible movement without damage. Drag chain cables are known for their durability, high flexibility, and resistance to wear and tear. Cable Construction Drag chain cables are generally composed of the following components: Conductor: For flexibility, the most flexible conductor is chosen. Insulation: High-pressure molded PVC insulation is used to support the structure. Sheath: The outer sheath must be flexible yet supportive and is also high-pressure molded. Filler: Used to maintain the cable’s structure. Shielding: Tightly woven shielding provides torsion resistance. These cables must also have strong mechanical properties to withstand significant tensile force during use. Is Softer Drag Chain Cable Always Better? Not necessarily. While softness is often desirable for flexibility, the right cable should meet the specific conditions of use. The softness or hardness of the cable’s feel is largely related to the

Drag Chain Cables In equipment units that require back-and-forth movements, to prevent cable entanglement, wear, pulling, and scattering, cables are often placed into a cable drag chain. This setup protects the cable while allowing it to move with the drag chain. The high flexibility cables that can withstand such movements without wear and tear are called drag chain cables, often referred to as drag chain cables. Drag chain cables are mainly used in: Industrial electronic systems Automatic generation lines Storage equipment Robots Fire systems Cranes CNC machine tools Metallurgical industry Components of Drag Chain Cables: Tensile Centre In the centre of the drag chain cable, depending on the number of cores, a true centre fill is used to support the structure. This prevents the strands from entering the centre area of the cable, protecting the overall structure. Conductor Construction The most flexible conductor, class 6, should be chosen. Generally, the thinner the conductor, the more flexible the cable is. Core Insulation The insulation inside the drag chain cable should not stick together. It needs to support each strand of the single-stranded wire. High-pressure moulding PVC or TPE materials are suitable for this application. Shielding The shielding of a drag chain

NBR Cable The full name of NBR cable is nitrile butadiene rubber cable. What is NBR material? NBR material is a synthetic rubber made by copolymerizing butadiene and acrylonitrile. As a rubber, it offers excellent characteristics such as oil resistance, abrasion resistance, heat resistance, and good insulating properties. This makes it an ideal insulating material for cables.   Characteristics of NBR Cable NBR cables are widely used in various industrial applications, particularly in the oil industry, due to their oil resistance, friction resistance, and watertight properties. However, they also have resistance to ozone, hydrocarbons, ketones, and ester solvents. Custom NBR Cable Solutions KMCABLE offers customized NBR cables tailored to your specific needs. If you have any questions or require more information about NBR cables or cables made from other materials, feel free to consult our experts. We are here to help with any requirements you may have.

Selection of Battery Cables for BESS What are the Battery Cables for BESS? Battery cables in BESS (Battery Energy Storage Systems) are responsible for the critical transmission of electrical energy. As the main carriers within the energy storage system, they ensure efficient, stable, and low-loss energy transfer from the battery module to the load or power grid, tailored to the specific needs of BESS. Main Challenges Faced by Modern BESS Systems Safety When BESS operates beyond its voltage, temperature, or current limits, lithium or LiFePO4 batteries can easily smoke, catch fire, or even explode. This makes detecting and protecting battery voltage, temperature, and current data crucial. Accurate Battery Monitoring Accurate battery data is essential for both safety and improving BESS system efficiency. Key measurements include: Battery Voltage: Small errors can lead to large discrepancies in remaining capacity. Current: Overloads or short circuits can overheat cables, increasing fire risks. State of Charge: Proper monitoring prevents over-discharging or charging, extending battery life. Temperature: Avoids overheating and ensures long-term performance. Balancing Cell and Battery Pack Capacity Load variations can cause different current draws, leading to imbalances and reduced energy efficiency. This imbalance worsens over time, and since ESS lifespan exceeds 10 years, aging