Description: Lowest relative humidity to which a device can be exposed without permanently restricting its operating behavior; Name: relative humidity (minimum)
Description: lowest relative humidity to which a device may be subject without permanent impairment of operating characteristics; Name: min. air humidity
Description: norm/stipulation describing the explosion protection. The explosion protection type, the device category, the temperature class as well as the device / explosion group are taken from this norm. The type and number of the norm/stipulation with issue year and issue month must be given; Name: Reference norm of the explosion protection