Motor Connections

Status
Not open for further replies.
tkb

tkb

Senior Member
Location
MA
We just installed new Baldor 40hp and 60hp Super-E motors today and the windings are a delta configutation.
I can't say I've seen that in a motor in a long time.

The 208 connections were 1-7-6, 2-8-4, 3-9-5.
http://dl.dropbox.com/u/33217279/Pages from EM4314T.pdf

When the guys energized the 60hp motor it drew over 300 amps and tripped out the drive before it even got to 10hz.

When we megged out the windings it turned out that the 4 and 7 leads were mismarked from the factory.

How does Baldor let that happen?
Aren't all large motors tested before they leave the factory?
 
kwired

kwired

Electron manager
Location
NE Nebraska
tkb said:
We just installed new Baldor 40hp and 60hp Super-E motors today and the windings are a delta configutation.
I can't say I've seen that in a motor in a long time.

The 208 connections were 1-7-6, 2-8-4, 3-9-5.
http://dl.dropbox.com/u/33217279/Pages from EM4314T.pdf

When the guys energized the 60hp motor it drew over 300 amps and tripped out the drive before it even got to 10hz.

When we megged out the windings it turned out that the 4 and 7 leads were mismarked from the factory.

How does Baldor let that happen?
Aren't all large motors tested before they leave the factory?
Click to expand...
If it was tested @ higher voltage only it would have passed the test as 4 and 7 tie together @ higher voltage.
 
C3PO

C3PO

Senior Member
Location
Tennessee
I have been to Baldor's facility in Fort Smith several times over the years and all the employees i talked to seemed genuinely happy at their jobs.
 
Last edited by a moderator:
C3PO

C3PO

Senior Member
Location
Tennessee
I put in a lot of Baldor motors around this size but all at 480 so not sure if any of mine have had this problem. Was the 40hp ok?
 
M

mike7330

Senior Member
Location
North America
"""When the guys energized the 60hp motor it drew over 300 amps and tripped out the drive before it even got to 10hz"""


Sorry that doesn't sound very "Green"
 
tkb

tkb

Senior Member
Location
MA
C3PO said:
I put in a lot of Baldor motors around this size but all at 480 so not sure if any of mine have had this problem. Was the 40hp ok?
Click to expand...

The 40hp had no problems on the second try installing it.
It was going on the roof inside an AHU to replace the old motor.
No one noticed that the peckerhead was on the right side and the new motor had it on the left.
It wouldn't fit in the unit with it in that configuration.

No one caught it before we had a crane on site and the old one was on the ground and the new one was in the air.
I was not happy.

We had to send it to a Baldor authorized repair shop to have it reversed.
 
tkb

tkb

Senior Member
Location
MA
ActionDave said:
From which side of the motor? The shaft facing you, or away from you?
Click to expand...

When looking at the shaft all of the new Baldor motors have the peckerhead on the left.
We should have ordered a mod to have it on the right.
 
Status
Not open for further replies.
Top