How are waterproof levels specified for LED drivers?
A: The waterproof level of LED drivers is specified by two numbers known as Ingress Protection (IP) ratings, which are a measure of the environmental protection that the driver provides.
The first number of the IP rating specifies the driver’s protection against solid materials, whereas the second figure specifies protection from liquids. A description of the levels of each of these two numbers is shown in the table below.
IP First number – Protection against solid objects
0 No special protection
1 Protected against solid objects over 50 mm, e.g. accidental touch by a persons hands.
2 Protected against solid objects over 12 mm, e.g. persons fingers.
3 Protected against solid objects over 2.5 mm (tools and wires).
4 Protected against solid objects over 1 mm (tools, wires, and small wires).
5 Protected against dust limited ingress (no harmful deposit).
6 Totally protected against dust.
IP Second number – Protection against liquids
0 No protection
1 Protection against vertically falling drops of water e.g. condensation
2 Protection against direct sprays of water up to 15o from the vertical
3 Protected against direct sprays of water up to 60o from the vertical
4 Protection against water sprayed from all directions – limited ingress permitted
5 Protected against low pressure jets of water from all directions – limited ingress
6 Protected against temporary flooding of water, e.g. for use on ship decks – limited ingress permitted
7 Protected against the effect of immersion between 15 cm and 1 m
8 Protects against long periods of immersion under pressure