Glossary

The degrees of protection gotten by the envelopes of electric materials low and Medium Average (until 1000V and 1500V) are defined by French standards NF INTO 60529 (IP) and NF EN 50102 (IK).

To symbolize the degrees of protection, it is made use of followed letters IP of 2 characteristic digits.

IP = code indicating the degree of protection gotten by the envelope against the access to the dangerous parts, the penetration of foreign solid bodies and the penetration of the liquids.

The first figure indicates the protection against the solid bodies.

• 0 : no protection.
• 1 : protected against the solid bodies higher than 50mm (e.g.: involuntary contact of the hand).
• 2 : protected against the solid bodies higher than 12,5mm (e.g.: fingers).        
• 3 : protected against the solid bodies higher than 2,5mm (e.g.: tools, screws).
• 4 : protected against the solid bodies higher than 1mm (e.g.: thick tools, wires).
• 5 : protected against dusts (not harmful deposit).
• 6 : completely protected against dusts.

The second figure indicates the protection against the liquid bodies .

• 0 : no protection.
• 1 : Protected against the vertical falls from water drops (condensation).
• 2 : Protected against the falls from water drops until 15° of vertical.
• 3 : Protected against rainwater until 60° from vertical.
• 4 : Protected against water projections of all directions.
• 5 : Protected against the jets from water of all directions to lance.
• 6 : Protected against water projections assimilable to the big waves.
• 7 : protected against the effects of immersion.
• 8 : protected against the effects of immersion prolonged under specified conditions.