The Eddy Current Dynamometer is BI-DIRECTIONAL, DRY-GAP TYPE. In a dry gap unit, the only resistance to movement of the rotor is that of bearing friction and the small effect of windage. With zero excitation, an almost no-load condition can be achieved over the entire speed range.
Check out the INTEGRATED ENGINE DYNO SYSTEM for Engine Testing Dynamometers.
Download PDFThe construction comprises of a thin spoked steel rotor revolving in a casing that houses the field coil and the heat exchanger. When excitation current is generated in the coil, a magnetic flux is developed. An equal and opposite magnetic field is induced in the heat exchanger walls facing the rotor. This field is pulsating corresponding to the RPM of the rotor. The changing field produces Eddy Currents in the heat exchanger walls that oppose the excitation field and thus causing retarding action to be imposed on the rotor. The magnetic flux lines developed in the rotor can be kept to a minimum thickness, resulting in a low moment of inertia.
| Sr. No. | Model | Torque Range Nm @ rpm range | Power Range Hp @ rpm range |
|---|---|---|---|
| 1 | Ec-20 | 25@1500 to 6000 | 20@6000 to 10000 |
| 2 | EC-70 | 91@1500 to 5500 | 70@5500 to 10000 |
| 3 | EC-100 | 205@1500 to 3500 | 100@3500 to 8000 |
| 4 | EC-12/10 | 235@600 to 3500 | 120@3500 to 10000 |
| 5 | EC-180 | 316@1500 to 4000 | 180@4000 to 6000 |
| 6 | EC-200 | 415@1000 to 3000 | 200@3000 to 5000 |
| 7 | EC-200TR | 1200@1000 to 2800 | 400@2800 to 8000 |
| 8 | EC-300 | 702@1000 to 3000 | 300@3000 to 5000 |
| 9 | EC-300TR | 2100@500 to 2000 | 600@2000 to 5000 |
| 10 | EC-600 | 1405@600 to 3000 | 600@3000 to 4000 |
| 11 | EC-1000 | 3500@600 to 2000 | 1000@2000 to 5000 |
