NA 027
DIN Standards Committee Optics and Precision Mechanics
DIN ISO 9022-20 [CURRENT] references following documents:
| Document number | Edition | Title |
|---|---|---|
| IEC 60068-2-42 | 2003-05 | Environmental testing - Part 2-42: Tests; Test Kc: Sulphur dioxide test for contacts and connections More |
| IEC 60721-3-4 | 1995-01 | Classification of environmental conditions - Part 3: Classification of groups of environmental parameters and their severities - Section 4: Stationary use at non-weatherprotected locations More |