I need a better definition of "load"

GetDeviceInfo

Joined Jun 7, 2009
1,866
What about an electric motor as a load?

See how difficult it is to pin down.
a motor runs on the classic power triangle. Real power is what's dissipated into a coupled mechanical load. The overhead non unity currents fall into the previous post. That is easily demonstrated with correction applied at the load, resulting in supply lines delivering unity, or real power. The correction, being reactive in nature, does not add to the 'load', but rather exposes it's true, or real quality.
 
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studiot

Joined Nov 9, 2007
4,998
a motor runs on the classic power triangle. Real power is what's dissipated into a coupled mechanical load. The overhead non unity currents fall into the previous post. That is easily demonstrated with correction applied at the load, resulting in supply lines delivering unity, or real power. The correction, being reactive in nature, does not add to the 'load', but rather exposes it's true, or real quality.
What does all that have to do with the fact that a motor is an electrical load which draws power from the electricity supply and outputs mechanical work to a mechanical load?
It is true there is some resistive heat dissipation, but great effort is made to minimise this and no such energy available to do useful work.
 

GetDeviceInfo

Joined Jun 7, 2009
1,866
well, if not for my benefit, then maybe for the OP.

could a resistor be used to indicate a motor load? It would be unconventional, but in an overview, yes it could. It wouldn't account for the reactive nature of the load, but that could be intended, implying load point correction.
 
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