Discuss SPD to cover whole site? in the Industrial Electrician Talk area at ElectriciansForums.net

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Hi Guys,
Having recently done my 18th, and various reading of SPD requirements, I feel that within the factory where I work (food industry), we should be using SPD's?

We have an onsite transformer which we own, 11kV to 400v, which then splits after the meter to two main switch panels, which subsequently feed the factory. In total there are 31 distribution boards and 100's of final circuits.

What options are there for SPD's?

Is it feasible installing one to cover the whole factory, or would it be better installing them on to the incommer of each DB? Or what are the other options?

There is the risk assessment formula (Reg 443.5 I think), but I don't see how we can get the DNO information for cable lengths etc?



Thanks for any advice.
 
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