The transformer percent impedance is important for short circuit calculations and is required. Having it on the name plate makes it easier to obtain. It is also used as part of transformer protection using ANSI C57 thru fault curves. Thanks for watching!
Hi Alfonso, thank for checking out the video. Think of this as polar/rectangular coordinates and trigonometry. The X/R ratio are the two sides of a triangle. X = vertical, R = Horizontal. Z is the hypotenuse and X/R is the tangent of the angle of Z.
Sir, Thank you for this video. Good Explaining. But not cleared that if this is applied % Voltage at Primary to get the Full Load Current at Secondary with Short circuited terminals, then why it is called % Impedance. If its not related to Impedance then may i know why on video you have shown Zsc = R + jX. Thank you in Advance. Regards Mahamuni Mumbai, India
Years ago it was called %IZ current x impedance. Current is always 100% and somewhere decades ago, the "I" was dropped. You can calculate the impedance in ohms with the % Z as it also ties to the per unit system. Thanks for the comment. - Jim
The way you explained this in less than two minutes solidified my understanding immediately.
You answered that question!
Glad the video helped. Stay in touch!
i just burned 3 hours in the books trying to figure that out, lol wish i met you earlier, anyways thanks a lot!
Happy to help!
youre no alone man HAHA
2:22 😂😂😂 👌 nailed it!
Enjoyed the lecture
Clear nice explanation. Klarheit.
Much appreciated Sir, very simple.
Nice explanation for impedance, thanks!
Thank you so much!
😄
Thank you sir
Question, why is it important to know? Why put it on the transformer?
Thanks
The transformer percent impedance is important for short circuit calculations and is required. Having it on the name plate makes it easier to obtain. It is also used as part of transformer protection using ANSI C57 thru fault curves. Thanks for watching!
ماشالله شكرا لك
thanks
thanks sir.
thanks.
simply super
Thank you
Sir what is the relation of %Z to X/R?
Hi Alfonso, thank for checking out the video. Think of this as polar/rectangular coordinates and trigonometry. The X/R ratio are the two sides of a triangle. X = vertical, R = Horizontal. Z is the hypotenuse and X/R is the tangent of the angle of Z.
Sir,
Thank you for this video. Good Explaining.
But not cleared that if this is applied % Voltage at Primary to get the Full Load Current at Secondary with Short circuited terminals, then why it is called % Impedance.
If its not related to Impedance then may i know why on video you have shown Zsc = R + jX.
Thank you in Advance.
Regards
Mahamuni
Mumbai, India
Years ago it was called %IZ current x impedance. Current is always 100% and somewhere decades ago, the "I" was dropped. You can calculate the impedance in ohms with the % Z as it also ties to the per unit system. Thanks for the comment. - Jim
What is the name of the lecturer?
I am the lecturer - Jim Phillips from brainfiller.com
Jim Phillips (me) Been in the industry for 4 decades and training for a large part of that.