AD1 : Negligible

Probability of presence of water is negligible Location in which the walls do not generally show traces of water but may do so for short periods, for example in the form of vapour which good ventilation dries rapidly -IEC 60721-3-4, class 4Z6

IPX0 - IEC 60529

AD2  : Free-falling drops

Possibility of vertically falling drops Location in which water vapour occasionally condenses as drops or where steam may occasionally be present - IEC 60721-3-3, class 3Z7

IPX1 or IPX2 - IEC 60529

AD3  : Sprays

Possibility of water falling as a spray at an angle up to 60° from the vertical Locations in which sprayed water forms a continuous film on floors and/or walls - IEC 60721-3-3, class 3Z8 IEC 60721-3-4, class 4Z7

IPX3  - IEC 60529


AD4 : Splashes

Possibility of splashes from any direction Locations where equipment may be subjected to splashed water; this applies, for example, to certain external luminaires, construction site equipment -IEC 60721-3-3, class 3Z9
IEC 60721-3-4, class 4Z7

IPX4  - IEC 60529

AD5  : Jets

Possibility of jets of water from any direction Locations where hot water is used regularly (yards,car-washing bays)- IEC 60721-3-3, class 3Z10 IEC 60721-3-4, class 4Z8

IPX5  - IEC 60529

AD6  : Waves

Possibility of water waves Seashore locations such as piers, beaches, quays, etc. - IEC 60721-3-4, class 4Z9

IPX6  - IEC 60529


AD7 : Immersion

Possibility of intermittent partial or total covering by water Locations which may be flooded and/or where the
equipment is immersed as follows:

• Equipment with a height of less than 850 mm is located in such a way that its lowest point is not more than 1 000 mm below the surface of the water    - IEC 60529

• Equipment with a height equal to or greater than 850 mm is located in such a way that its highest point is not more than 150 mm below the surface of the water  - IEC 60529

IPX7  - IEC 60529

AD8 : Submersion

Possibility of permanent and total covering by water Locations such as swimming pools where electrical equipment is permanently and totally covered with water under a pressure greater than 10 kPa.  - IEC 60529

IPX8  - IEC 60529


source :  IEC 60364-5-51 You are not allowed to view links. Register or Login