Zoomup:Alan Capon:
The CPC and screen must be earthed. The detail is in the BS5839 suite of documents, which you need if you are doing this work.
Regards,
Alan.What, even 24 Volt systems have have an earth provided?
Z.
That's PELV for you ... where PELV is used ... Now I suppose you could have a PELV TN-C system, but a better performance for EMC can be achieved if the PELV system is TN-S.
Alternatively, PELV mid-point earthed (DC or AC), and the earth distributed to metallic enclosures to show up faults or for EMC purposes.
Zoomup:Alan Capon:
The CPC and screen must be earthed. The detail is in the BS5839 suite of documents, which you need if you are doing this work.
Regards,
Alan.What, even 24 Volt systems have have an earth provided?
Z.
That's PELV for you ... where PELV is used ... Now I suppose you could have a PELV TN-C system, but a better performance for EMC can be achieved if the PELV system is TN-S.
Alternatively, PELV mid-point earthed (DC or AC), and the earth distributed to metallic enclosures to show up faults or for EMC purposes.
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