120 volt parallal/low delta-any advantage to leaving the unusued paralle corners unbonded

[JohnMcNutt]

I recently came across a generator used for 120 only. I am working on it for an engine vibration problem but discovered they wired it with the unused corner "unbonded" (best term I could think of). As far as I know it has always worked fine electrically.

On any reconnection scheme I have ever seen (and they are few as this is an uncommon utilization configuration) they are always bonded together at that point. This particular machine has no diagram for this voltage connection inside the cover.

I attached a diagram to explain what I am saying better.

 

[waross]

It will make no difference under normal operation. The reaction to a winding fault may not be the same.

Bill
--------------------
"Why not the best?"
Jimmy Carter

 

[itsmoked]

BTW John, you can directly post pictures into your threads now. Use the picture-with-a-circle.

Keith Cress
kcress -

http://www.flaminsystems.com

 

[JohnMcNutt]

It will make no difference under normal operation. The reaction to a winding fault may not be the same.

What would you envision might happen with a winding fault? Regulator is SX460. Hopefully regulator power would collapse. Which configuration would be more likely to help that happen?

Trying out this picture thing