VFD for return to 3ph?

[stevec]

(10-21-2013, 01:11 PM)12345678910 Wrote: I have a large 220v 30 amp twist lock plug on the output to the vfd

Then male plugs on the equipment I want to power it.

It's not a fast change over, but it's simple and versatile


Pick the plug size that suits your needs

Do you mean you have a large FEMALE 220v 30 amp twist lock plug on the output from the VFD ? The pic you show looks male to me.
And, if it's the 3 ph output shouldn't it have four prongs, one for ground?

I'm just worried about unplugging one machine while the VFD is still powered and then plugging in the other machine.
I'm not disciplined enough to guarantee unplugging the input to the VFD before outputs are unplugged.

Am I paranoid about turning off the VFD before disconnecting (plug or switch) to the motor it was driving?