Section 18 IED physical connections18.1 Protective earth connectionsThe IED shall be earthed with a 16.0 mm2 flat copper cable.The earth lead should be as short as possible, less than 1500 mm.Additional length is required for door mounting.IEC11000286 V1 ENFigure 314: The protective earth pin is located to the left of connector X101 on the3U full 19” case18.2 Inputs18.2.1 Measuring inputsEach terminal for CTs/VTs is dimensioned for one 0.5...6.0 mm2 wire or for two wiresof maximum 2.5 mm2.1MRK 502 048-UEN A Section 18IED physical connections659Technical manual
