delta center tap transformer
- Thread starter jimmie
- Start date
- Status
Ed MacLaren
Senior Member
Re: delta center tap transformer
Jimmie, you are correct.
Ed
Jimmie, you are correct.
Ed
wanderer20001us
Senior Member
Re: delta center tap transformer
Either is technically correct.
The method you are using make use of the theorem of a right triangle; a^2 + b^2 = c^2
You can also use 240 * sin(60) = 207.85
or 240 * cos(30) = 207.85
The method discribed to you uses the known side length ratios of a 30-60-90 right triangle, which are 1 (120V), 2 (240V), 1.73 (207.85V)
Use whichever is easier to calculate and remember. It all comes down to geometry.
Sam A. - PE
Either is technically correct.
The method you are using make use of the theorem of a right triangle; a^2 + b^2 = c^2
You can also use 240 * sin(60) = 207.85
or 240 * cos(30) = 207.85
The method discribed to you uses the known side length ratios of a 30-60-90 right triangle, which are 1 (120V), 2 (240V), 1.73 (207.85V)
Use whichever is easier to calculate and remember. It all comes down to geometry.
Sam A. - PE
Re: delta center tap transformer
JUST ADDITIONAL QUESTION ABOUT ED DRAWING:
In this delta transformer how would you balance the load with respect to neutral/center tap?Does it safe to operate even it is unbalance(presuming with great unbalnce)?.Would the value of unbalance current affect the performance of other windings?
Thank you very much for your reply.This is a matter of verification and curriosity.
JUST ADDITIONAL QUESTION ABOUT ED DRAWING:
In this delta transformer how would you balance the load with respect to neutral/center tap?Does it safe to operate even it is unbalance(presuming with great unbalnce)?.Would the value of unbalance current affect the performance of other windings?
Thank you very much for your reply.This is a matter of verification and curriosity.
Re: delta center tap transformer
Wyedelta, balancing would be no problem on the center tapped winding. The only loads that would share the common conductor would be from the C winding which is called a "lighter or kicker" by some.
If you see this delta transformer set up, you will notice the "lighter or kicker" is larger than the other two.
Roger
Wyedelta, balancing would be no problem on the center tapped winding. The only loads that would share the common conductor would be from the C winding which is called a "lighter or kicker" by some.
If you see this delta transformer set up, you will notice the "lighter or kicker" is larger than the other two.
Roger
Re: delta center tap transformer
roger:
Thanks for reply.I am sorry I mean for the whole delta.If this is not well balance(though there is no perfect balance load),I mean if the center tap carry larger load than the other side of the tap this will give unbalance load to both A & B phase.This is what I mean, we must keep the load balance in each phase to avoid any harm.I know that if you keep the center tap load balance in each other this will give no problem.
Correct me if I'm wrong, theoritically we must keep the load current as much as posible balance so as not to give any problem at all.
Thanks for your reply in advance.
roger:
Thanks for reply.I am sorry I mean for the whole delta.If this is not well balance(though there is no perfect balance load),I mean if the center tap carry larger load than the other side of the tap this will give unbalance load to both A & B phase.This is what I mean, we must keep the load balance in each phase to avoid any harm.I know that if you keep the center tap load balance in each other this will give no problem.
Correct me if I'm wrong, theoritically we must keep the load current as much as posible balance so as not to give any problem at all.
Thanks for your reply in advance.
- Status