I want to understand about connection diagram of tap changing transformer.

Ian0

Joined Aug 7, 2020
13,097

MisterBill2

Joined Jan 23, 2018
27,159
Transformer windings are not "end tapped", they are connected to at the ends.
A transformer winding is a linear system, meaning that voltage is induced along every segment of a secondary winding. This means that a connection at any point will have some voltage.
The TS needs to study transformers and related magnetics some more!
 
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MaxHeadRoom

Joined Jul 18, 2013
30,557
A transformer winding that is centre tapped provide a ± phase shift of 90° on each end WRT the centre tap,
Often used for full wave rectification using 2 diodes,
This is also the method of used to supply domestic power in NA.;)

Correction: should read 180° WRT the CT
 
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Ian0

Joined Aug 7, 2020
13,097
Transformer windings are not "end tapped", they are connected at the ends.
A transformer winding is a linear system, meaning that voltage is induced along every segment of a secondary winding. This means that a connection at any point will have some voltage.
The TS needs to study transformers and related magnetics some more!
The TS's reference refers to transformers that are tapped 0-220-230-240 as being "end-tapped" - no, I've not heard the term before, they were just "tapped".
 

Ian0

Joined Aug 7, 2020
13,097
A transformer winding that is centre tapped provide a ± phase shift of 90° on each end WRT the centre tap,
Often used for full wave rectification using 2 diodes,
This is also the method of used to supply domestic power in NA.;)
90° phase shift from a transformer! You'd need Scott-T to do that.
 
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