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Forum: 702. Power Supplies

Tue 24 March 2009, 13:48

Replies: 14

Variable Frequency Drives VFD's for spindles

Views: 17,038

Posted By Gerald D

You might be surprised JR . . . . . With...

You might be surprised JR . . . . .

With the original .75hp motor, and the belts set for lowest speed, say 575rpm spindle speed, one third of motor speed, the spindle torque would be triple the...

Forum: 702. Power Supplies

Tue 24 March 2009, 07:50

Replies: 14

Variable Frequency Drives VFD's for spindles

Views: 17,038

Posted By Gerald D

Your 1.5HP motor is only 1.5HP when you put a...

Your 1.5HP motor is only 1.5HP when you put a 1.5HP load on it. In other words, it is a 1.5HP capable motor. A 1HP capable VFD will happily get that motor spinning and feed loads on that motor as...

Forum: 702. Power Supplies

Mon 23 March 2009, 22:50

Replies: 14

Variable Frequency Drives VFD's for spindles

Views: 17,038

Posted By Gerald D

I am quite far from there now, but all single...

I am quite far from there now, but all single phase circuits at my premises are protected by 20 Amp breakers and 2.5mm2 wire is common for that. A 230V circuit consuming 20 Amp is roughly giving 4600...

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