How IP Rating is done!!!

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Dear All,

this is how Ingress Protection rating is done.

In future if any equipment/machinery/instrument has to

be procured for specific use, ensure what IP rating

you are looking for.

Example - IP Rating

With the IP rating IP 54, 5 describe the level of

protection from solid objects and 4 describe the level

of protection from liquids.

IP First number - Protection against solid objects

0 No protection.

1 Protected against solid objects up to 50mm,

e.g. accidental touch by hands.

2 Protected against solid objects up to 12mm,

e.g. fingers.

3 Protected against solid objects over 2.5mm

(tools and wires).

4 Protected against solid objects over 1mm

tools, wire, 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 o limited ingress permitted.

5 Protected against low-pressure jets of water

from all directions o limited ingress.

6 Protected against low-pressure jets of water,

e.g. for use on ship decks - limited ingress

permitted.

7 Protected against the effect of immersion

between 15cm and 1m.

8 Protects against long periods of immersion

under pressure.

IP Third number - Protection against mechanical

impacts (commonly omitted)

0 No protection.

1 Protects against impact of 0.225 joule (e.g.

150g weight falling from 15cm height).

2 Protected against impact of 0.375 joule (e.g.

250g weight falling from 15cm height).

3 Protected against impact of 0.5 joule (e.g.

250g weight falling from 20cm height).

4 Protected against impact of 2.0 joule (e.g.

500g weight falling from 40cm height).

5 Protected against impact of 6.0 joule (e.g.

1.5kg weight falling from 40cm height).

6 Protected against impact of 20.0 joule (e.g.

5kg

With Regards,

Kuldeep Bhatt

Asst. Manager - Industrial Hygiene

SHE.

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