PVC dipped insulated copper busbar industry technical knowledge popularization

Copper has been widely used in electrical equipment, especially complete sets of power distribution devices, due to its excellent electrical conductivity (conductivity higher than aluminum). Copper bars are mainly used for primary lines, including high-current phase lines, neutral lines and ground lines. In power distribution cabinets, copper bars are usually used to connect high-current primary components. Common copper busbars on the market include tinned copper busbars and bare copper busbars. The bare copper busbars can be protected by dipping in the spare parts. The core consideration in copper bar selection is the carrying capacity, that is, selecting a copper bar with an appropriate cross-sectional area based on the actual current. In addition, the bolts at the connection must be tightened reliably; otherwise under high current conditions, excessive contact resistance may cause local overheating or even a serious accident of melting the copper bar. In order to further improve the insulation performance and corrosion resistance of copper bus bars, the Insulated Custom Copper Bus Bar with PVC Dipping technology came into being. A dense protective layer is formed on the surface of the copper bus bars through the dip molding process, which effectively solves the limitations of the use of bare copper bus bars in harsh environments.

 

The coating material used in the dip molding process is mainly polyvinyl chloride (PVC), which has good flexibility, corrosion resistance and electrical insulation properties. Compared with traditional heat-shrink tubing, the dip-molding process can achieve seamless full coverage, which is especially suitable for copper busbars with complex shapes and multiple bends or mounting holes. Through dipping treatment, the copper busbar not only obtains reliable insulation protection but also enhances its ability to resist mechanical damage. On this basis, PVC Dipped Insulated Bus Bar has become the standard configuration of many electrical engineering projects, playing an important role in distribution cabinets, control cabinets and various electrical complete sets of equipment.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The processing technology of dipped insulated copper bars is based on a core principle: the pretreated metal copper bars are immersed in high-temperature molten plastic (such as PVC), so that the plastic evenly adheres to the surface of the copper bar, and is then cooled and solidified to form a strong, non-aging insulation layer. The key to this process is to achieve a strong bond between the coating and the copper substrate to avoid spalling or air gaps during use. The complete process includes copper row cleaning, dipping liquid preparation, dipping processing, heat treatment, cooling and other links. Among them, the dipping processing link directly determines the uniformity and integrity of the insulation layer, and requires precise control of the composition of the dipping liquid, the dipping temperature, the dipping time and the lifting speed.

 

The specific operating steps can be refined into the following process: First, remove burrs and oil stains on the surface of the copper strip material to ensure that the matrix is clean; secondly, use iron wires to hang the copper strips on the plastic-impregnating brackets according to the product's shape and dipping requirements; then, put the copper strips into the oven to preheat so that they can absorb enough heat to better absorb plastic materials when immersed in the dipping liquid. The preheating temperature and preheating time are adjusted according to the size and thickness of the copper strips; After the heating is completed, the copper bar is immersed in a container filled with plastic dipping solution, and the immersion time is controlled according to the thickness requirements of the required coating; after the plastic dipping is completed, the copper bar with the wet coating is put into the oven again for plasticization and molding. The plasticizing temperature is controlled between 180°C and 300°C, and the plasticizing time is determined according to the size, thickness and hardness requirements of the copper strip. Finally, the plasticized product is cooled using air cooling until the copper strip returns to normal temperature. In this series of processes, Insulated Flexible Copper Bus Bar for Power Battery Pack has higher requirements for coating flexibility and adhesion, and requires fine adjustments in plasticizing temperature and time to meet the vibration and temperature cycle usage environment in the battery pack.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Insulated busbar copper bar dipping processing technology has been widely used in many fields such as power systems, transportation, and manufacturing. In power systems, plastic-impregnated insulated copper bars are used in medium and low-voltage distribution cabinets, capacitor compensation cabinets, control cabinets, and busbars and connection bars in substations. These occasions have high requirements for the safety and reliability of electrical equipment. Plastic-impregnated copper busbars can effectively reduce short-circuit faults caused by insulation failure, extend the operating life of the equipment, and reduce the operation and maintenance costs throughout the life cycle. In the field of transportation, plastic-impregnated copper bars are used in auxiliary power supply systems of rail transit vehicles, battery cabinets, and high-current connections inside traction converters. In these environments with frequent vibration and compact space, the anti-vibration performance and insulation reliability of the plastic-impregnated layer are particularly important.

 

In the manufacturing field, plastic-impregnated insulated copper busbars are widely used for internal electrical connections in industrial inverters, servo drives, uninterruptible power supplies (UPS) and numerical control equipment. These devices usually have high requirements for compact structure and heat dissipation performance. Plastic-impregnated copper bars can achieve miniaturization design while ensuring insulation. In addition, with the rapid development of the new energy industry, the application of plastic-impregnated insulated copper bars in energy storage systems and electric vehicle charging facilities is also expanding. For example, the battery cluster connection rows inside the energy storage battery pack and the high-current busbars in the charging piles can all use the dip-molding process to improve the insulation safety level. At present, with the continuous upgrading of power systems and the increasing requirements for high reliability and long life of electrical equipment, the processing technology of plastic-impregnated insulated copper bars is also continuing to develop, the process level is constantly improving, and the application prospects are broader.

 

Among them, the Plastic Dipping Copper Busbar has become the preferred solution for many standardized electrical projects due to its controllable cost, mature technology and stable performance; while the Dipping Busbar for Connection focuses on the insulation protection of the connection parts and has targeted optimization in aspects such as overlapping surface treatment and hole insulation to ensure connection reliability without sacrificing insulation integrity.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Copper row plastic-impregnated insulation technology continues to evolve with the high-end electrical equipment and the expansion of the new energy industry. On the one hand, the compactness and modularization requirements of traditional power equipment for the busbar system have pushed the dipping process to develop in the direction of thinner wall thickness and higher insulation strength. The research and development of new modified PVC and engineering plastic dipping materials provide the material basis for this. On the other hand, the rapid deployment of electric vehicles, energy storage power stations and distributed energy systems has brought a broad market space for Plastic Dipping Electric Copper Busbar Custom Made. Customized, flexible and highly reliable dipped insulated busbars have become key components in the supply chain of these emerging fields. The introduction of intelligent manufacturing technology is also reshaping the production model of dip molding processing. Automated dip molding production lines combined with machine vision inspection systems are gradually replacing traditional manual operations and visual inspections, greatly improving production efficiency and quality stability. As global electrical safety standards and environmental regulations become increasingly stringent, the new generation of plastic-impregnated insulated busbars with low-smoke, halogen-free, flame-retardant and recyclable characteristics will surely occupy a more important position in the international engineering procurement market.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

If you are looking for Dip Insulated Busbar products with high quality and stable delivery, please feel free to contact our engineering team for professional technical solutions and quotation support.