Surge Capacitors connection in tertiary winding of transformers

[nipun_kanade]

Hi,

Please tell me what is use of surge capacitors in tertiary winding of Power Transformers and how should they be connected..

Thankyou

 

[Phil Corso]

Nipun Kanade...

Please provide additional information, i.e., capacity, voltage, winding connection (D or Y), and grounding/earthing method for Y-winding neutral(s)!

Regards, Phil Corso

 

[gar]

130302-2027 EST

nipun_kanade

Are you describing a ferroresonant constant voltage transformer? How much does it weigh in pounds? Or how large is it dimensionally? If over 5 kW it is probably not a constant voltage unit.

.

 

[glene77is]

Hi,

Please tell me what is use of surge capacitors in tertiary winding of Power Transformers and how should they be connected..

Thankyou

These are called "Constant Voltage Transformers" and "FerroResonant Transformers". *

I suspect that you are referring to the "odd" capacitor+3rdWinding on your CVT .
Each CVT may have specific design specs, some seem simple, some look wierd.

If so, then the capacitor is for filtering purposes, simply put.
Required because as the CVT functions to regulate V(out)
the shape of the V(out) changes
from a pure sine to an odd shaped sine, with more harmonics.

It is a big story.
Electrical Engineering is interesting beyond all description.

Check this site for a simple intro to CVT functions.

Ferroresonant Transformer - CVT
www.ustpower.com/

or

Google for Ferroresonant Transformer and pick several.

or

take some college Electrical Engineering courses for the big truth.