EN 342:2017
PROTECTIVE CLOTHING – ENSEMBLES AND GARMENTS FOR PROTECTION AGAINST COLD
(EN 342:2017 supersedes EN 342:2004)
NEN EN 342:2017 specifies requirements and test methods for the performance of clothing ensembles (i.e. g two-piece suits or coveralls) for protection against the effects of cold environments equal to or below -5°C. These effects comprise not only low air temperatures but also humidity and air velocity. The protective effects and requirements of footwear, gloves and separate head wear are excluded from the scope of this standard.
Icler: Insulation value (in M2.K/W) of the single garment or ensemble with standard reference clothing. See table C.2 below for wearing times.
Classes: Classification of the air permeability, see table below (3 levels, where 3 is best).
WP: Indication of resistance to water penetration
Table C.2 – Resultant effective thermal insulation of clothing (Icler) and ambient temperature conditions for heat balance at different activity levels and durations of exposure.
| Insulation Icler (m².K/W) | Wearer moving activity | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Light 115 W/m² | Medium 170 W/m² | |||||||||||||||||||
| Air velocity | ||||||||||||||||||||
| 0.4 m/s | 3 m/s | 0.4 m/s | 3 m/s | |||||||||||||||||
| 8 h | 1 h | 8 h | 1 h | 8 h | 1 h | 8 h | 1 h | |||||||||||||
| 0.265 | 3 | -12 | 9 | -3 | -12 | -28 | -2 | -16 | ||||||||||||
| 0.310 | -2 | -18 | 6 | -8 | -18 | -36 | -7 | -22 | ||||||||||||
| 0.390 | -9 | -28 | 0 | -16 | -29 | -49 | -16 | -33 | ||||||||||||
| 0.470 | -17 | -38 | -6 | -24 | -40 | -60 | -24 | -43 | ||||||||||||
| 0.540 | -24 | -45 | -11 | -30 | -49 | -71 | -32 | -52 | ||||||||||||
| 0.620 | -31 | -55 | -17 | -38 | -60 | -84 | -40 | -61 | ||||||||||||
Air permeability classes:
| AP (mm/s) | Class |
|---|---|
| 100 < AP | 1 |
| 5 < AP ≤ 100 | 2 |
| AP ≤ 5 | 3 |
