Ian Barley
03-03-2003, 3:38 PM
I was recently successful on a dust extractor system. This is an old system which used a 415V 3phase motor. My shop only has 230V single phase so I am gonna change the motor (Its at least twenty years old and as big as a house anyway!).
The existing motor is 2HP and I can easy fit a modern 3HP in the same space. My question is whether there is any point?
Is there any advantage to be had in more power when a 2HP will be quite capable of spinning the impeller at full revs. Logic suggests that once a motor is running at full revs the effort required is effectively only what is needed to overcome friction and air resistance. By uprating the motor will I simply be running the same performance at a higher electrical cost?
Any thoughts most welcome.
(PS As a refuge from the Pond - The temperature in the creek seems to be pretty much the same - congrats to all responsible for getting this place going!)
The existing motor is 2HP and I can easy fit a modern 3HP in the same space. My question is whether there is any point?
Is there any advantage to be had in more power when a 2HP will be quite capable of spinning the impeller at full revs. Logic suggests that once a motor is running at full revs the effort required is effectively only what is needed to overcome friction and air resistance. By uprating the motor will I simply be running the same performance at a higher electrical cost?
Any thoughts most welcome.
(PS As a refuge from the Pond - The temperature in the creek seems to be pretty much the same - congrats to all responsible for getting this place going!)