Ylijännitetasaimet

Ylijännitetasaimet, also known as surge protectors or surge suppressors, are electrical devices designed to protect electronic equipment from voltage spikes. These spikes, or surges, are brief but significant increases in voltage that can damage sensitive components. They can be caused by various factors, including lightning strikes, power outages, and the switching of high-power electrical devices.

The primary function of an ylijännitetasain is to divert excess voltage away from the connected equipment. They typically contain components like Metal Oxide Varistors (MOVs) or silicon avalanche diodes. When the voltage exceeds a certain threshold, these components become conductive and create a low-resistance path to ground, effectively shunting the excess energy away from the protected device. This prevents the overvoltage from reaching and damaging the delicate circuitry.

Ylijännitetasaimet vary in their capacity to absorb energy and their response time. Higher joule ratings indicate a greater ability to absorb surge energy. The clamping voltage determines the level at which the device begins to divert voltage. It is important to choose an ylijännitetasain that is appropriate for the equipment being protected and the potential surge conditions in a given environment. They are commonly integrated into power strips, but can also be found as standalone units or built into larger electrical systems.