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1 × R246.68
Subtotal: R246.68
LLPD
Line lightning protection device
Lightning is a very common natural phenomenon. About 6 lightning strikes hit the Earth’s surface each second. Below is a map of the flash density developed by NASA. You can estimate the situation in your region: if ground flash density (GFD) is greater than 10, then you should not ignore it.
Direct strike: creates a lightning impulse splitting and propagating along the line making insulators flashover on its way.
Indirect strike: generates induced overvoltages on the line by electromagnetic effects. It can also lead to insulator flashovers.
Possible consequences:
- Failure of the transformer by mechanical stress and temperature rise
- Outages and trips
- Conductor breakage (in particular covered conductors)
- Insulator breakage
- Metal Oxide Arrester breakage
- Failure of the transformer due to insulation failure
