NA 022
DKE German Commission for Electrical, Electronic & Information Technologies of DIN and VDE
DIN EN IEC 60603-7 ; VDE 0627-603-7:2022-10 [CURRENT] references following documents:
Document number | Edition | Title |
---|---|---|
ITU-T O.9 | 1999-03 | Measuring arrangements to assess the degree of unbalance about earth More |