Efficiency Map Generator

Data

Paste data — 3 columns: speed, torque, efficiency

Options

Title (optional)

X axis

Y axis

Value unit

Value name

Show data points

Points are triangulated (Delaunay) and interpolated onto a regular grid — irregular operating envelopes are supported; regions outside the measured envelope stay blank. All processing happens in your browser.

IE Class Calculator (indicative)

IEC TS 60034-30-2 — for variable-speed motors (incl. PMSM). Not an official compliance statement.

Candidate speed (rpm)

Candidate torque (N·m)

η90 — efficiency at 90% speed, same torque (%)

Classification uses the actual formulas from IEC TS 60034-30-2 (Table 7/8 interpolation, harmonic-loss-corrected threshold), covering 0.12–200 kW and 600–6000 rpm. Scope conditions not checked here: rated voltage, cooling method (IC4xx), duty type, and the servo-motor exclusion test — a real compliance determination needs those too.