What is a surge protection device(SPD)

AC Surge Protective Device

What is a surge protector device? A surge protection device (SPD) is a device used to protect electronic equipment from power surges or transient voltages. This device is connected in circuit parallel to the power circuit of the load it protects. Surge protectors can also be used at all levels of power supply networks. But what exactly does a surge protector (SPD) do?

A surge protection device is a protective device that limits transient voltages by shunting or limiting surge current. In other words, it works to divert excess voltage away from sensitive electronic equipment, such as computers, televisions, washing machines, and safety circuits, like fire detection systems and emergency lighting. These devices are designed to protect electrical systems and equipment from surge events by limiting transient voltages and diverting surge currents. Without proper SPD surge protection, transient events can damage electronic equipment and cause costly downtime risks.

surge picture

Surges can come from external sources, most strongly from lightning, or internally from electrical load switching. Sources of these internal surges (which account for 65% of all transients) may include loads turning on and off, relay and circuit breaker operation, heating systems, motors, and office equipment. It’s important to note that equipment with sensitive electronic circuits and film and television power signals are easily damaged by transient overload voltages. This is where a surge protector comes into play, providing essential protection for delicate electronic devices.

So, how do surge protectors work? When a power surge occurs, the surge protector detects the excess voltage and redirects it safely to the ground wire. By doing so, the surge protector prevents the excess voltage from reaching and damaging the connected electronic equipment. In this way, surge protectors act as a barrier between the power source and the electronic devices, ensuring that any potential damage from power surges is minimized.

In conclusion, a surge protector, or surge protection device (SPD), is a crucial component in protecting electronic equipment from power surges or transient voltages. They are essential for safeguarding sensitive electronic devices and preventing costly downtime risks that can result from transient events. By diverting excess voltage away from connected equipment, surge protectors play a vital role in ensuring the reliable and continuous operation of electronic devices. Whether it’s protecting computers, televisions, or fire detection systems, surge protectors are an indispensable tool for preserving the integrity of electronic equipment.

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Post time: Jan-18-2024