NA 022
DKE German Commission for Electrical, Electronic & Information Technologies of DIN and VDE
DIN EN 41003 Beiblatt 1 ; VDE 0804-100 Beiblatt 1:2006-11 [CURRENT] references following documents:
| Document number | Edition | Title |
|---|---|---|
| ITU-T V.28 | 1993-03 | Electrical characteristics for unbalanced double-current interchange circuits More |