Electric Motors/Three phase 12 Lead Motor winding connection
I Have A Motor With 12 Leads, Labelled W1, W1, W2, W2 U1, U1, U2, U2, V1, V1, V2, V2,
How Can I Connect It For 440V Connection.
Kevin, I forgot another important fact, you have double W1s so on, so I am pretty sure you really have a 6 lead motor, they use smaller wire for leads, so it is not such a pain to wrestle around but if you have a VOM ohmeter whatever, a great help would be to take the ohm meter and tell me what goes with what, in other words is W1 a double lead?
They make it difficult but that is why you have a very good question and a weird motor connection but we WILL FIGURE IT OUT
Kevin this a tricky one Some Toshiba's and Lincoln Brand motors use all three phases connected externally, in parallel for 440 volts most of the time the higher voltage is WYE . That really jacks people up. It probably is at least 25 HP and likely larger.
That is the one caveat I cannot answer, is the full external Delta connection designed to be 440/460/480 [HIGH VOLTAGE].
This jacks up many people and why they do it I don't know.
You got ANYTHING on that motor? Nameplate? Manual? Inside Connection box? Can you send it to me?
firstname.lastname@example.org [Private e-mail] photo of nameplate, connection plate, anything so I can try and figure out if this is a full parallel delta 440 connection.
I can normally figure it out, by looking at the size of the leads, attach an amp rating to an individual lead then add up the amount of current compared to the name plate data
This is IEC motor lead marking BUT THIS ODD Toshiba, Lincoln and a few others throw a monkey wrench into things and IT GETS SO CONFUSING so I need to check it out for you
Specifically the standard connection for just what you have is found here :
They just jack around with these 12 lead motors so I really want to double check what you have I can figure it out, with a little more info, but you can use this for now,
Here is the difference standard 12 lead you will have two motor leads per line
Toshiba 12 lead you will have 4 motor leads per line, SEE THE DIFFERENCE ?
I can't tell you yet which way it is internally wound, but I can gotta have more specifics on YOUR motor,
I don't make this crap up, but people get all balled up by NOT KNOWING IT IS EVEN POSSIBLE so for now, here is the standard IEC 12 lead connection diagram
MOST ARE STANDARD MOST let me know if you have ANYTHING ELSE on that motor photo of nameplate ANYTHING