The Basics of Motor Performance
Various symbols and units are used to indicate motor performance.
List of terms on motor performance
| Term | Symbol | Unit |
|---|---|---|
| Input | P | W |
| Output | P | W |
| Maximum output | Pmax. | W |
| Voltage | V | V |
| Current | I | A |
| No-load current | I0 | A |
| Stall current | Is | A |
| Efficiency (*1) | η | % |
| Maximum efficiency | ηmax. | % |
| Speed | N | r/min(*2) |
| No-load speed | N0 | r/min |
| Torque | T | mN·m, g·cm |
| Stall torque | Ts | mN·m, g·cm |
- It indicates what percentage of the electric energy applied to the motor is used effectively as the mechanical energy.
- It means "revolutions per minute".