11
satisfactory operation of the equipment; complete
protection against contact
6
Dust tight
No ingress of dust; complete protection against
contact
Liquid ingress protection
The second digit indicates the level of protection that the enclosure provides against
harmful ingress of water.
Level
Protected
against
Testing for
Details
0
Not
protected
—
—
1
Dripping
water
Dripping water (vertically
falling drops) shall have no
harmful effect.
Test duration: 10 minutes
Water equivalent to 1 mm
rainfall per minute
2
Dripping
water when
tilted up to
15°
Vertically dripping water
shall have no harmful effect
when the enclosure is tilted
at an angle up to 15° from
its normal position.
Test duration: 10 minutes
Water equivalent to 3 mm
rainfall per minute
3
Spraying
water
Water falling as a spray at
any angle up to 60° from
the vertical shall have no
harmful effect.
Test duration: 5 minutes
Water volume: 0.7 litres per
minute
Pressure: 80
–100 kPa
4
Splashing
of water
Water splashing against
the enclosure from any
direction shall have no
harmful effect.
Test duration: 5 minutes
Water volume: 10 litres per
minute
Pressure: 80
–100 kPa
