What is a surge suppressor ?

A surge suppressor is a device that attenuates transient voltage and noise and is also called TVSS, but industry experts call it SPD. The terms SPD and TVSS are used interchangeably.

A surge suppressor is a device designed to attenuate very short-term dangerous transient voltages that appear on power lines and control lines connected to power lines, telephone lines, data networks, CCTV circuits, cable TV circuits, and electronic equipment.

How do surge suppressors work ?

Simply put, a surge suppressor prevents destructive voltage transients from reaching the equipment it is protecting, but it does not necessarily reduce the surge voltage to zero. Surge suppressors attenuate surges to a level where they can safely flow through the load.

What technologies are used in surge suppressors ?

The components used in surge suppressors have changed significantly and include:

These parts have changed in the following ways:

* Energy capability

* Availability

* Reliability

* Cost

* Effectiveness

How does grounding work ?

The goal of any grounding is to provide a low-impedance path for fault currents or transient currents to flow to earth. The first characteristic that determines the effectiveness of grounding is its impedance to earth. For transient phenomena such as surges, ground acts as an impedance rather than resistance.

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