SPD is a device designed to protect electrical circuitry from voltage spikes. SPD limits the over voltage in an electrical network by diverting, blocking or by shorting any unwanted voltages above aRead More…
Any one would expect a safety device like SPD- Surge protection Device to “fail safely” in case of any abnormalities above the SPD’s limit. Also, situations like Neutral cut or shift inRead More…
Air Terminal in an external lightning protection systems can be divided into two categories, namely, conventional and non- conventional. The conventional systems use Franklin rods or mesh. Early Streamer Emission (ESE) andRead More…
An ideal earthing system especially the earth electrodes shall offer long life almost equal to the life of a building or at least 30 to 40 years. But often the system degradesRead More…
Earthing System is essential for any electrical installation to avoid dangers associated with fault currents and lightning strikes. A properly designed common earthing system is used for both electrical system and lightningRead More…
Copper Coated Steel and Skin Effect Skin effect is the tendency of an alternating electric current (AC) to become distributed within a conductor such that the current density is largest near theRead More…
Lightning protection of structres are being done in 2 ways ,both confirming the indian standard.The first method is isolated protection(for convenience called as conventional method in this paper)and the second oneRead More…
L ightning have always been a fascinating natural phenomenon. However, they also present a risk for human and the environment that should not be underestimated. The task of a lightning protection systemRead More…
urge Arresters are used to Limit the surge voltage much below the voltage impulse withstanding level of the near by apparatus and to divert Lightning current. The function of the earth conductorRead More…
Selection of components for Lightning protection is an area where mischievous stories are considered. Be it air termination or down conductors. One such area is insulated down conductors. Manufacturers recommend insulated downRead More…