![]() ![]() S = protective earthing function provided by a conductor separate from the neutral conductor or from the earthed line (or, in AC systems, earthed phase) conductor.Subsequent letter(s) (if any) – Arrangement of neutral and protective earthing conductors: ![]() ![]() N = direct electrical connection of the ECPs to the earthed point of the power system (in AC systems, the earthed point of the power system is normally the neutral point or, if a neutral point is not available, a line conductor).T = direct electrical connection of ECPs to earth, independently of the earthing of any point of the power system.Second letter – Relationship of the exposed-conductive-parts (ECPs) of the installation to earth: I = all live parts isolated from earth, or one point connected to earth via a high impedance.T = direct connection of one point to earth.įirst Letter – Relationship of the power system to the earth: IEC terminology from the IEC 60364-1 standard. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |