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Surge protection - quote received

Johno12345

Hi,

A bit of advice, and maybe a bit amusing. 

I have had our lightning protection systems tested recently, and it passed as expected, but I then received a quote from the same people stating that there is no surge protection on the main LV panel.

They didn't have access to it, its in the powerhouse, fed by a 1MVA transformer, but they have actually quoted £1,350 for a type 1 SPD to the main board and one SPD to the fire alarm. I know they have just sent this as a standard sort of touting for business thing, but it did make me wonder if there is actually any requirement to retrofit SPD to our existing installation

Any thoughts?

Thanks 

Parents

  • The main purpose of a type 1 SPD is as part of the LPS to prevent fire in the case of a strike. It's not there to protect equipment; that what's a type 2 is for. A type 1 temporarily equipotentially bonds the electrical system to the LPS so that there's less PD around and so the lightning isn't temped to arc across from the LPS to the electrical system and start a fire along the way. At least that's my basic understanding of it.

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  • The main purpose of a type 1 SPD is as part of the LPS to prevent fire in the case of a strike. It's not there to protect equipment; that what's a type 2 is for. A type 1 temporarily equipotentially bonds the electrical system to the LPS so that there's less PD around and so the lightning isn't temped to arc across from the LPS to the electrical system and start a fire along the way. At least that's my basic understanding of it.

Children
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