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What are the key points of heat dissipation and anti-seismic design of high-voltage parallel capacitors?

Key points of heat dissipation design
Choose appropriate materials and processes: High-voltage parallel capacitors use advanced metallized polypropylene film and vacuum evaporation technology. This material and process not only gives the capacitor excellent self-healing ability and long-term stability, but also has certain advantages in heat dissipation. Metallized polypropylene film has good insulation performance and low dielectric loss, which can reduce the heat generated by dielectric loss. Vacuum evaporation technology can make the internal structure of the capacitor more compact, which is conducive to heat conduction. At the same time, the company's capacitors use [epoxy resin/dry type] packaging, which has good environmental resistance and better heat dissipation performance than some traditional oil-immersed packaging, which can effectively prevent poor heat dissipation caused by environmental factors.
Optimize internal structure design: Rationally design the electrode structure and insulation layout inside the capacitor to increase the heat dissipation area and improve the heat dissipation path. For example, the use of thin electrodes and multi-layer insulation structure can make it easier for heat to be conducted from the inside to the shell. In addition, setting a heat dissipation channel or heat sink inside the capacitor can also improve the heat dissipation efficiency. Jiande Antai Power Capacitor Co., Ltd. has its own testing laboratory and advanced and complete testing equipment. It can optimize the internal structure of the capacitor through testing methods such as thermal imaging to ensure the rationality of the heat dissipation design.
Control the operating temperature: The operating temperature range of high-voltage shunt capacitors is as wide as - 25°C to + 50°C. In order to ensure the normal operation of the capacitor within this temperature range, its operating temperature needs to be strictly controlled. On the one hand, it is necessary to choose a suitable installation location to avoid installing the capacitor in direct sunlight, near high-temperature heat sources, or in poorly ventilated places. On the other hand, cooling methods such as forced air cooling or water cooling can be used. When the operating temperature of the capacitor exceeds the set value, the heat dissipation device is started in time to reduce the temperature of the capacitor. Jiande Antai Power Capacitor Co., Ltd. will conduct strict temperature tests on the capacitor during the production process to ensure that it can operate stably under different ambient temperatures.
Consider thermal expansion factors: During the operation of the capacitor, thermal expansion will occur due to temperature changes. Therefore, the impact of thermal expansion on the internal structure and performance of the capacitor should be considered during the design. For example, choose appropriate materials and structures so that the capacitor will not produce excessive stress during thermal expansion, avoiding damage to internal components or poor contact. At the same time, a certain amount of space should be reserved to allow the capacitor to have enough room for expansion during thermal expansion.

Key points of earthquake-resistant design
Improve mechanical strength: In order to keep the high-voltage parallel capacitor structurally intact under external forces such as earthquakes, its mechanical strength needs to be improved. Jiande Antai Power Capacitor Co., Ltd. has two of its own foundries and a CNC processing factory. During the production process, the design and manufacturing process of the capacitor shell can be optimized, and high-strength materials such as aluminum alloy or stainless steel can be used to improve the shell's compression and deformation resistance. At the same time, strengthen the fixation and connection of the internal components of the capacitor, and use reliable welding, riveting or bolting to ensure that the internal components will not loosen or fall off during vibration.
Use shock-absorbing devices: During the installation of the capacitor, shock-absorbing devices can be used to reduce the impact of earthquakes on the capacitor. For example, shock-absorbing pads or shock-absorbing springs are installed on the capacitor base or bracket. These shock-absorbing devices can absorb and buffer the vibration energy generated by the earthquake and reduce the vibration intensity of the capacitor. In addition, a hanging installation method can be used to suspend the capacitor on a fixed bracket through an elastic rope or chain, so that the capacitor can swing relatively freely during vibration and reduce the rigid collision with the fixed structure.
Perform seismic calculation and simulation: In the design stage, computer-aided engineering (CAE) technology is used to perform seismic calculation and simulation analysis on high-voltage parallel capacitors. By establishing a three-dimensional model of the capacitor, applying seismic waves of different intensities and frequencies, analyzing the stress distribution, deformation and displacement response of the capacitor during vibration, identifying potential weak links, and conducting targeted optimization design. Advanced design software and analysis tools can be used to perform accurate seismic calculation and simulation to ensure that the seismic performance of the capacitor meets the requirements.
Strengthen the reliability of electrical connections: During earthquakes, the electrical connection parts of capacitors are prone to loosening, breaking and other problems, resulting in electrical failures. Therefore, to strengthen the reliability of electrical connections, adopt appropriate connection methods and fastening measures, such as using wire clamps, terminal blocks, etc., and ensure that the connection parts have sufficient contact pressure and good conductivity. Protective devices are set at the electrical connection parts to prevent short circuits or grounding faults caused by vibration.
Consider the impact of the installation environment: Different installation environments have different impacts on the seismic performance of capacitors. For example, when installing inside a building, factors such as the building's structural type, seismic resistance level, and the connection method between the capacitor and the building structure should be considered. If it is installed outdoors, the impact of factors such as wind load and foundation settlement on the seismic performance of the capacitor should also be considered. When providing products and services to customers, we will fully consider the customer's installation environment and usage requirements, and provide customers with personalized seismic design solutions to ensure that the capacitor has good seismic performance in various complex installation environments.