Ylijännit

Ylijännit is a Finnish term that translates to "overvoltage" in English. It refers to a condition where the voltage in an electrical system exceeds its normal operating level. This can occur for various reasons, including lightning strikes, switching surges from power lines, or faults within the electrical grid.

Overvoltages can be detrimental to electrical equipment and infrastructure. They can cause insulation breakdown, component failure, and ultimately lead to system malfunctions or damage. The severity of the damage depends on the magnitude and duration of the overvoltage.

To mitigate the risks associated with ylijännit, electrical systems are equipped with protective devices. Surge protective devices (SPDs), also known as surge suppressors, are commonly used to divert excess voltage away from sensitive equipment and safely to the ground. Lightning arresters are another form of protection, specifically designed to handle the high voltages generated by lightning.

Understanding and addressing ylijännit is crucial for ensuring the reliability and safety of electrical power distribution and the longevity of connected devices. Regular maintenance and proper installation of protective measures are essential components of managing overvoltage risks.