Electrical formulas, Ohm’s law, Power in dc circuits – Rockwell Automation 150 MNL/SMC DIALOG+/APP-PROD GUIDE User Manual
Page 179
Reference
10-17
Table 10.N (cont.)Torque Characteristics
Electrical Formulas
Ohm’s Law:
Where:
I = Current (Amperes)
E = EMF or Voltage (Volts)
R = Resistance (Ohms)
Power in DC Circuits:
Where:
P = Power (Watts)
I = Current (Amperes)
E = EMF or Voltage (Volts)
kW = Kilowatts
kWH = Kilowatt-Hours
Application
Load Torque as Percent of Full
Load Drive Torque
Breakaway
Accelerating
Peak Running
Saws, circular, wood, production
50
30
150
Saws, edger (see edgers)
Saws, gang
60
30
150
Screens, centrifugal (centrifuges)
40
60
125
Screens, vibrating
50
150
70
Separators, air (fan-type)
40
100
100
Shears, flywheel-type
50
50
120
Textile machinery
150
100
90
Walkways, mechanized
50
50
100
Washers, laundry
25
75
100
I
E
R
--
=
R
E
I
--
=
E
I
R
×
=
P
I
E
×
=
HP
I
E
×
74
---------
=
kW
I
E
×
1,00
-----------
=
kWH
I
E
×
Hour
Ч
1,00
-------------------------
=