Variable-Frequency Drive rating for a given motor - drive current rated ≥ motor full-load current × 1.1 with overload headroom.
Formula
$$ I_{drive} \geq 1.1 \cdot I_n $$
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| $I_n$ | Motor full-load current | A | motor nameplate |
| $I_{drive}$ | Required drive continuous current | A | drive datasheet |
Sources
- ABB / Danfoss VFD Marine Handbook.