Online calculator drive technology
To help visitors to this website with designs or calculations, we have compiled some formulae here
as an online calculator from the field of "Electrical and drive technology".
However, we would also like to mention at this point that all information and results are non-binding!
Power calculation for DC motors
Electrical power: P=U x I
Electrical power: P=I² x R
Electrical power: P=U² / R
Mechanical power: P=W / t
Power calculation for alternating current motors
Apparent power:S=U x I
Active power: P=U x I x cos φ
Reactive power: Q=U x I x sin φ
Active power factor: cos φ=P / S
Reactive power factor: sin φ=Q / S
Power calculation for three-phase motors
Apparent power: S=U x I x √3
Active power: P=U x I x cos φ x √3
Reactive power: Q=U x I x sin φ x √3
Active power factor: cos φ=P / S
Reactive power factor: sin φ=Q / S
Calculate cable cross-section:
DC motor - connecting cables
Cable cross-section: A=(2 x I x L) / (K x Δu x U)
Alternating current motor - connection cables (1-phase)
Cable cross-section: A=(2 x I x L x cosφ) / (K x Δu x V)
Three-phase motor - connection sides (3-phase)
Cable cross-section: A=(√3 x I x L x cosφ) / (K x Δu x U)
Torque calculation for electric motors
Torque: MD=9550 x P x n
Slip - calculation of electric motors
Slip: S=(Ns - N ) / Ns x 100%)
Energy saving calculator
Energy saving calculator for electric motors