MAXIMUM HIGH-VOLTAGE AND INSULATING RESISTANCE FOR TRANSFORMERS, RESTRICTORS AND MORE

Electromagnetic coils are used in the automotive industry as well as in the manufacture of household appliances and in the aerospace industry. Suitable vacuum impregnation and encapsulation processes help protect the electromagnetic coils from corrosion and improve their electrical and mechanical properties.

Electromagnetic coils such as solenoids, transistors, restrictors and relays can be found everywhere, such as in household appliances, consumer electronics, medical devices and energy technology. They are also frequently employed in automotive applications and in the electronics and electrical industries. They are used for purposes such as generating or detecting magnetic fields, transforming voltages, current smoothing and as an energy accumulator.

Particularly in very challenging areas such as electromobility or aerospace, the components used, and thus the relevant electromagnetic coils, have to fulfill extremely high engineering and quality standards. This is done by impregnating or encapsulating the electromagnetic coils with a suitable impregnating or casting resin designed for electronics. Encapsulated or impregnated transformers, solenoids and restrictors not only offer better protection against environmental influences and corrosion, they also offer advantages in voltage and temperature resistance, electrical insulation, heat dissipation and mechanical stability. In some cases improved acoustic properties are relevant as well.