I. PROTECTION CLASS IP STANDARD MOTORS UNDER IEC 34-5:

The first figure of the IP protection class indicates the extent to which a standard motor is protected against sold materials.

The second figure of the IP protection class indicates the extent to which a standard motor is protected against liquid materials.

IP 1st figureProtection against solid material descriptionIP 2nd figureProtection against liquid material description
0No protection0No protection
1Protection from 50 mm material1Protects against vertically falling droplets
2Protection from 12mm material2Protects against falling droplets of water at an angle of 15°
3Protection from 2.5mm material3Protects against rain up to an angle of 60°
4Protection from 1mm material4Protects against rain from any angle
5Protects against dust5Protects against sprayed water from any direction
6Fully protects against dust6Protects against temporary penetration
-N/A7Protects against water with a depth between 0.15 and 1 metre
-N/A8Protects against water at a predetermined pressure and time

II. INSULATION CLASS ISO FOR STANDARD MOTORS :

Insulation class ► ISOAEBFH
Temperature limit105°C120°C130°C155°C180°C
Maximum temperature of the winding100°C115°C120°C140°C165°C
Ambient temperature for land installations40°C40°C40°C40°C40°C
Maximum delta T (K) of the stator winding60K75K80K100K125K