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Types of Surge Protection Devices

Posted by Admin | 16 Jan
Surge protection is a safety measure to prevent the damage caused by power surges. These transients can be generated by various disturbances in the electrical system, such as the switching of a utility line or a lightning strike in the vicinity.
Surge protectors redirect these excess energy from electronic devices to ground, preventing damage to these equipments. The National Fire Protection Association (NFPA) recommends the installation of surge protectors to help safeguard against such occurrences.
There are many types of surge protection devices. Each device has its own benefits, though most feature the same basic components. They can be installed at all levels of the power supply network.
First and foremost, there is the thyristor, which is a solid state electronic device. It is used in high-speed, low-power circuits.
Another type of solid state electronic device is a zener diode, which is used to protect against common circuit spikes. When a certain threshold voltage is reached, the diode conducts a current.
Some devices can also absorb these spikes. The most efficient ones include metal oxide varistors (MOVs), inductors, and capacitors. Other methods of surge suppression may also use multiple technologies.
Another device designed to be a common-mode interference suppressor is a choke coil. This four-terminal device has a ferrite as its core.
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