NA 022
DKE German Commission for Electrical, Electronic & Information Technologies of DIN and VDE
DIN EN 50057 ; VDE 0400-4:1993-07 [Withdrawn] references following documents:
| Document number | Edition | Title |
|---|---|---|
| EN 50054 | 1991-06 | Electrical apparatus for the detection and measurement of combustible gases; general requirements and test methods More |
