1.CONSTRUCTION ELECTRICAL INSTALLATION AND EQUIPMENT
54
Table 6.1.4 Degrees protection against water indicated the second characteristic numeral
Second
characteristic
numeral
Degree protection
Brief description Definition
0 Non-protected -
1 Protected against vertically falling
water drops
Vertically falling drops shall have no
harmful effects
2 Protected against vertically falling
water drops when enclosure tilted up
to 15°
Vertically falling drops shall have no
harmful effects when the enclosure is
tilted any angle 15° either
side the vertical
3 Protected against spraying water Water sprayed angle 60° on
either side the vertical shall have no
harmful effects
4 Protected against splashing water Water splashed against the enclosure
from any direction shall have no
harmful effects
5 Protected against water jets Water projected jets against the
enclosure from any direction shall
have harmful effects
.3 Degrees protection against solid foreign objects indicated the first
characteristic numeral
First
characteristic
numeral
Degree protection
Brief description Definition
0 Non-protected -
1 Protected against solid foreign
objects and greater
The object probe, sphere mm
shall not fully penetrate 1)
2 Protected against solid foreign
objects 12,5 and greater
The object probe, sphere 12,5 mm
shall not fully penetrate 1)
3 Protected against solid foreign
objects 2,5 and greater
The object probe 2,5 shall
not penetrate all 1)
4 Protected against solid foreign
objects 1,0 and greater
The access probe 1,0 shall
not penetrate all 1)
5 Dust- protected Ingress dust not totally
prevented, but dust shall not penetrate
in quantity interfere with
satisfactory operation the apparatus
or impair safety
6 Dust-tight ingress dust
1)
The full diameter the object probe shall not pass through opening the enclosure
Table 6
