What is lightning protection unit?

A lightning arrester (alternative spelling lightning arrestor) (also called lightning diverter) is a device used on electric power transmission and telecommunication systems to protect the insulation and conductors of the system from the damaging effects of lightning.

Is standard for lightning protection?

IEC 62305 – Protection Against Lightning, is the apex level document that informs the standards for lightning protection around the world. The IEC 62305 standard covers the regulations required for the protection of equipment and structures from the effects of both direct and indirect lightning strikes.

How is the level of lightning protection determined?

Lightning protection level is used to design protection measures according to the relevant set of lightning current parameters. The minimum values of lightning current amplitude for the different LPL are used to derive the rolling sphere radius in order to define the lightning protection zone LPZ 0B which cannot be reached by direct strike.

What is the procedure for lightning risk assessment?

The procedure requires assigning a tolerable level of risk. A lightning protection level is then chosen to ensure that the calculated risk level is lower than the assigned tolerable level.

What does LPL stand for in lightning protection?

Lightning protection level LPL: is a number related to a set of lightning current parameters values relevant to the probability that the associated maximum and minimum design values will not be exceeded in naturally occurring lightning.

Which is higher the probability of a lightning strike?

Higher the lighting strike density, higher the probability of lightning strike which needs higher level of lightning protection level. It is the factor of presence of people and panic in the building in case of a lightning strike.