per the link above it's splash lubricated, but if it's capable of being run slower with a 5hp or 7.5hp motor, then using a VFD to slow it down to half capacity would be no different.
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Would You? 10hp Compressor 3 Phase
- Thread starter freudianfloyd
- Start date
per the link above it's splash lubricated, but if it's capable of being run slower with a 5hp or 7.5hp motor, then using a VFD to slow it down to half capacity would be no different.
Strouty
Well-known member
It looks like it could be pressure lubricated from the picture, so until he posts the entire Model number, I can't be sure. Using a VFD to slow it down is a sure way to burn out the motor and spend a lot of money on a VFD for no reason. Just figure out how much air you need or want, then either buy a 5 hp or 7.5 hp setup.
It looks like it could be pressure lubricated from the picture, so until he posts the entire Model number, I can't be sure. Using a VFD to slow it down is a sure way to burn out the motor and spend a lot of money on a VFD for no reason. Just figure out how much air you need or want, then either buy a 5 hp or 7.5 hp setup.
or he could re-pulley it so cooling isn't an issue (as previously suggested), and have a 5 - 10 hp compressor depending on his needs. but sure, buying a motor for each task is an option, too. potato tomato.
7635tools
Well-known member
Can you even run a 10HP motor on a residential service? Forget about the dedicated circuit ampacity. Just the crazy power draw of a reciprocating piston compressor with that much motor behind it is going to cause power issues for your neighbors.
My 7.5HP single phase compressor does everything I could ask of it. My guess is that this one can be repowered with a smaller motor. Perhaps with a smaller pulley to match.
I run a 40hp phase converter off my residential service with no problems.
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Here's a 10hp drive for single phase feed:
https://www.driveswarehouse.com/PC1-100-P21693.aspx
$1k. that gets you a nice variable capacity compressor for $1200.
https://www.driveswarehouse.com/PC1-100-P21693.aspx
$1k. that gets you a nice variable capacity compressor for $1200.
Good find, they are becoming more popular for sure.
I considered $1000 a lot for a VFD upgrade in my situation.
Also, there arent many benefits to a "variable capacity compressor"? It needs to start, stop, and repeat reliably, opposed to a sander where slowing it down has benefits.
For $1000 you can find a excellent USA 5hp motor, mag switch, belts, pulleys, etc.. and have money left over.
I considered $1000 a lot for a VFD upgrade in my situation.
Also, there arent many benefits to a "variable capacity compressor"? It needs to start, stop, and repeat reliably, opposed to a sander where slowing it down has benefits.
For $1000 you can find a excellent USA 5hp motor, mag switch, belts, pulleys, etc.. and have money left over.
cvairwerks
Well-known member
Here's a 10hp drive for single phase feed:
https://www.driveswarehouse.com/PC1-100-P21693.aspx
$1k. that gets you a nice variable capacity compressor for $1200.
He'd have to check the motor data plate first. That drive is limited to 33 amps, and some 10 hp motors run way more than that. You also need to note that the drive requires a dedicated 80 amp feed too.
American Locomotive
Well-known member
...and also have half the air flow.Good find, they are becoming more popular for sure.
I considered $1000 a lot for a VFD upgrade in my situation.
Also, there arent many benefits to a "variable capacity compressor"? It needs to start, stop, and repeat reliably, opposed to a sander where slowing it down has benefits.
For $1000 you can find a excellent USA 5hp motor, mag switch, belts, pulleys, etc.. and have money left over.
Sure there areGood find, they are becoming more popular for sure.
I considered $1000 a lot for a VFD upgrade in my situation.
Also, there arent many benefits to a "variable capacity compressor"? It needs to start, stop, and repeat reliably, opposed to a sander where slowing it down has benefits.
For $1000 you can find a excellent USA 5hp motor, mag switch, belts, pulleys, etc.. and have money left over.
slower = quieter
less amp draw
possibly a cooler running compressor
longer run time (can be good if you're trying to avoid cycling it on and off).
I would hope anyone seriously considering spending that much money would investigate thoroughly, or at least state their intentions before buying it. I'd only throw in so much effort at this point considering OP may flip it for a profit.He'd have to check the motor data plate first. That drive is limited to 33 amps, and some 10 hp motors run way more than that. You also need to note that the drive requires a dedicated 80 amp feed too.
...and also have half the air flow.
He speaks the truth. if you need more air than a good 5HP compressor will supply, the best 5HP compressor in the world still isn't good enough.
Also, there arent many benefits to a "variable capacity compressor"? It needs to start, stop, and repeat reliably, opposed to a sander where slowing it down has benefits.
.
Sure there are, you can match pump speed to your demand. Reduces wear on the pump and motor without all those starts and stops. Maybe not as important in a home shop but that can be a big deal in industry.
I think there is a member on here that has a vfd on his compressor set up with multiple stages to match the usage.