DocsMachine
Titanium
- Joined
- Jan 8, 2005
- Location
- Southcentral, AK
Hooked up an old (like WW2) 3-phase motor to a new VFD, and the motor sounded like it was spinning up- actually, it sounded like a small jet engine spooling up- but it was only barely turning. I could stop the pulley with my hand.
I shut it off before the VFD got up to "full speed", pulled the connections and ran an ohmmeter across all four wires- I get roughly 1.5 to 2.2 ohm across pretty much any combination of wires- ground included.
I'm assuming this means there's a short in the fields? Or did I maybe wire it wrong?
Doc.
I shut it off before the VFD got up to "full speed", pulled the connections and ran an ohmmeter across all four wires- I get roughly 1.5 to 2.2 ohm across pretty much any combination of wires- ground included.
I'm assuming this means there's a short in the fields? Or did I maybe wire it wrong?
Doc.