Mica: A Detailed Explanation of How it is Used for High-Voltage Applications

High voltage usage demands a specialized and stable material for the process of insulation. High voltages can compromise a complete circuit and the safety of users and operators if not handled properly. Hence a stable material is necessary for suitable high-voltage electric insulation.

There are numerous high-voltage applications where mica is used. Let’s take a look at them and a couple of examples of how mica is used.



The electrical properties of mica

Mica holds superior electrical properties in comparison to other common electrical insulation materials. Mica has the capacity to withstand up to 2000 kilovolts per mm of material before breaking down. It also has the capacity to withstand high temperatures. Pure mica has the ability to withstand up to 900°C, and when it gets laminated with other materials can even withstand up to 1600°C. Additionally, mica also has a high rate of permitivity.

High voltage applications of mica

The physical and electrical properties of mica make it incredibly well-suited to a number of applications in which users, operators or the wider system are required to be protected from high voltages. 

Electric vehicles

Electric vehicles (EVs) require high voltages, high currents and excellent high-voltage electrical insulation. Previously, the voltage ranges were 48V, but as more power is required and faster charging, the voltage can reach 500V or above. EVs and their chassis are designed carefully that protect the driver and passengers from high-voltage components and systems.  

High voltage capacitors

Mica is most commonly used in electrical applications in high-voltage capacitors. Mica capacitors are known to provide reliability and stability to a circuit, which enables high-precision performance. This is the reason they are the best choice for high-frequency applications and situations in which low losses and low capacitor changes over long periods are required.

Conclusion

A wide range of industries and applications like power-supply filtering, and energy storage with high-current discharge and voltage multipliers, prefer high-voltage mica capacitors. Applications like these are most common in commercial electrical applications and in the military, where high precison and high performance are required. Connect with Axim Mica if you have any queries.

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