Motor Parameters
0.30 Ω
0.50 Ω
100%
rpm
R 1 = 0.50 Ω, X 1 = 1.10 Ω, X m = 25 Ω, V L-L = 460 V, f = 60 Hz, p = 4
Advanced controls removed — these constants are used internally to produce results that better correlate with typical motor behavior.
Key Results
Torque
Rated torque: – N·m
Starting torque: – % of rated
Breakdown: – N·m at slip –
Starting Current (s=1)
– A (line)
No-load Current (s=0)
– A (line)
Loaded Speed Current
– A (line)
Loaded Power
– hp
Speed Regulation
– %
Efficiency
–
NEMA Configuration Comparison
Computed using the assumed system parameters shown above. Values are approximate and intended to illustrate typical relative behavior between NEMA rotor designs.
| Design | Starting T (N·m) | Pull-up T (N·m) | Breakdown T (N·m) | Rated T (N·m) | Rated speed (rpm) | Start I / Rated I (%) |
|---|
Note: WOUND rotor preset is excluded from this NEMA comparison. Values are approximate and intended to illustrate relative behavior between NEMA A–D designs.
Torque vs Speed
Stator Line Current vs Slip
Model Notes
- Per-phase approximate equivalent circuit with magnetizing branch
Xmin parallel with rotor branch (R2/s + jX2). - Total impedance:
Z = (R1 + jX1) + big[(jXm) parallel (R2/s + jX2)big]. - Line current magnitude computed from
I = V_phase / |Z|withV_phase = V_{L-L}/sqrt{3}for Y connection. - Air-gap power
P_ag = 3,|I_2|^2,(R2/s), torqueT = P_ag / omega_{sync}, with synchronous speedomega_{sync} = 4pi f / p. - You can compare analytical Thevenin torque curves for each NEMA preset using the "Compare all NEMA presets" checkbox in the presets panel.
- Mechanical losses are neglected; results illustrate trends rather than exact nameplate values.