Division 3.4
United Kingdom
From 1 March 2020, the following product information on servers and online data storage products shall be provided in the technical documentation for the purposes of conformity assessment pursuant to Article 4:
- (a)
Information listed in points 3.1 and 3.3, in the case of servers
- (b)
Information listed in points 3.2 and 3.3, in the case of data storage products
Table 6
Operating condition classes
| Dry bulb temp °C | Humidity range, non-condensing | |||||
|---|---|---|---|---|---|---|
| Operating condition class | Allowable range | Recommended range | Allowable range | Recommended range | Max dew point (°C) | Maximum rate of change (°C/hr) |
| A1 | 15- 32 | 18-27 | – 12 °C Dew Point (DP) and 8 % relative humidity (RH) to 17 °C DP and 80 % RH | – 9 °C DP to 15 °C DP and 60 % RH | 17 | 5/20 |
| A2 | 10-35 | 18-27 | – 12 °C DP and 8 % RH to 21 °C DP and 80 % RH | Same as A1 | 21 | 5/20 |
| A3 | 5-40 | 18-27 | – 12 °C DP and 8 % RH to 24 °C DP and 85 % RH | Same as A1 | 24 | 5/20 |
| A4 | 5-45 | 18-27 | – 12 °C DP and 8 % RH to 24 °C DP and 90 % RH | Same as A1 | 24 | 5/20 |