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
Power Calculation for AC Motors
Active power: P = U × I × cos φ
Reactive power: Q = U × I × sin φ
Reactive factor: sin φ = Q / S
Power Calculation for Three-Phase Motors
Apparent power: S = U × I × √3
Active power: P = U × I × cos φ × √3
Reactive power: Q = U × I × sin φ × √3
Reactive factor: sin φ = Q / S
Cable Cross-Section Calculation
DC motor:
A = (2 × I × L) / (K × Δu × U)
Single-phase Motor:
A = (2 × I × L × cos φ) / (K × Δu × V)
Three-phase Motor:
A = (√3 × I × L × cos φ) / (K × Δu × U)