Stavol quality speaks for itself. Precision-crafted, accurate and highly efficient – these units offer a host of peerless qualities including rapid correction, zero-waveform distortion, a wide range of input voltages and a compact and lightweight construction. Stavol units are ideal for all electrical appliance/constant input voltage applications.
Lightning arrestor
Lightning arrestor gives the protection against lightning only, as you can see these are installed on the top of the huge buildings. That lightning arrestor is connected to a conductor which runs along the walls and goes into the earth. In the olden days, Over voltages produced due to lightning acted as a severe threat to the power system. So the device which was used to suppress this lightning over-voltage was termed as lightning arrester.
Surge arrestor
Surge arresters are not generally designed to protect against a direct lightning strike to a conductor, but rather against electrical transients resulting from lightning strikes occurring in the vicinity of the conductor. Lightning which strikes the earth results in ground currents which can pass over buried conductors and induce a transient that propagates outward towards the ends of the conductor. The same kind of induction happens in overhead and above ground conductors which experience the passing energy of an atmospheric EMP caused by the lightning flash. Surge arresters only protect against induced transients characteristic of a lightning discharge’s rapid rise-time and will not protect against electrification caused by a direct strike to the conductor. Transients similar to lightning-induced, such as from a high voltage system’s fault switching, may also be safely diverted to ground; however, continuous overcurrents are not protected against by these devices.
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