MOTOVARIO
14
6
METHOD OF SELECTION
TABLE N. 2 fa SERVICE FACTOR ACCORDING TO CLASSIFICATION
OF LOAD AND DAILY WORKING HOURS
TABLE N. 3 fb SERVICE FACTOR ACCORDING
TO NUMBER OF STARTS / HOUR
TABLE N. 4 fc SERVICE FACTOR ACCORDING TO MOTOR
INSTALLED TYPE
Classification
of load
Daily working hours [h/d]
2
4
8
16
24
Uniform
0,80
0,90
1,00
1,25
1,35
Moderate
1,00
1,15
1,25
1,50
1,75
Heavy
1,25
1,50
1,75
2,00
2,25
Classification
of load
Number of starts per hour [starts/h]
< 8
8 … 32
32 … 64
64 … 128
Uniform
1
1,25
1,35
1,50
Moderate
1
1,15
1,25
1,35
Heavy
1
1,05
1,15
1,25
Type of motor
fc
Electric motor
1,00
Explosion motor multicylinder
1,25
Explosion motor single-cylinder
1,50