Cooling and Displaying the Temperature of the High Current Electrical Feedthroughs

Cooling and Displaying the Temperature of the High Current Electrical Feedthroughs

Electrical feedthroughs are tools that transmit electrical signals and currents between inside and outside of the vacuum chamber. Feedthroughs include one or more conductor pins that pass through a vacuum flange that is well sealed against air leakage. The conductive pins are electrically separated from the flange by insulation. These insulators, which are mostly made of ceramic, usually tolerate a significant difference pressure along their length.

All of the vacuum coating systems fabricated by VacCoat Ltd. are also equipped with electrical feedthroughs. In DTT thermal evaporation deposition systems, the high current electrical feedthroughs are used and passed electric current more than 100A through them. Passing this high current can be caused to increased temperature of the feedthrough in a few minutes, damaged its elastomer seals, leads to leakage in the vacuum system, and disrupts the process to reach the final pressure inside the vacuum chamber.

Temperature of the Electric Feedthrough on Vacuum Coating System

To prevent these problems, VacCoat Ltd. designed a new high current electric feedthrough which cooled by water. In addition, in order to be more careful and safe, the temperature of the electric feedthrough in these systems is monitored, and if the temperature of the feedthrough passed from the defined level, the power supply will be turned off automatically and the deposition process is stopped. The temperature of the feedthrough is displayed on the monitor of the device.

By displaying this temperature, the user can ensure the flow of water in the cooling system of the feedthrough at any time and if the temperature rises, check and fix the problem. For more information about vacuum coating systems made by Vac Coat Ltd., refer to the company’s website and read catalog of our products.

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