TERTIARY winding to feed unbalnced load condition on a STAR-STAR transformer

[@kedarpatil1889]

No one can deal machines like you sir...

[@mudavathsuresh5108]

Machines legend...............

[@sanjeevreddy7661]

Sir u r the only my favourite faculty 👏❤

[@pratikrana2735]

Best machine faculty ❤️❤️

[@chodagiriabhi1501]

Sir ur very talented

[@RaviTeja-so3el]

Worth watching 🤩 Thanq sir .. 💖

[@neilAneerGAmAI]

Super nice video, greetings from Norway!

[@rohiths5987]

Nice presentation

[@sonuammulu444]

Thanks a lot sir....

[@shabbirmohammad4616]

You are best sir

[@niranjankumar-qe9zc]

1. In primary winding, why current did not take outgoing path through neutral as it did in sec. Winding . 2. Why All star -star two winding transformer does not have delta winding for balancing . How these transformer get balanced .

[@venkateswarr4886]

👏👏👏👏

[@GauravGupta-pb8mk]

Super Video Sir

[@analasaikumar1791]

Sir please upload Lectures on special transformer connections (mainly Scott connections)

[@madhurimakaveri2790]

Sir, how can we be sure that primary phase B & C currents be equal and half of Ia? Will there not be any phase lag?

[@mahiraj8522]

No phase lag will be there...Since all are phase A currents.... phase displacement will be between phase A which is produced by phase A source and phase B current which is produced by phase B source and phase C current which is produced from phase C source.... here current is only becoz of phase A ,so no phase lag....And that phase A current is flowing through other windings...Its my understanding.. Please confirm from sir

[@madhurimakaveri2790]

mahe raj But still those currents are flowing through balanced 3 phase supplied windings.. supply voltages are out of phase then why not currents? I might be missing something from your explanation.. i need little more clarification pls

[@mahiraj8522]

@@madhurimakaveri2790 even though it is flowing through balanced windings current will not be displaced by any phase angle... Bcoz displaced of phase angle for current purely depends on source that is producing it...Here only phase A source voltage only acting....Voltages Va Vb Vc are displaced by 120degree but here Ia current is only flowing other 2 windings (here B and C)... that other 2 winding currents is not due to Vb and Vc...

[@madhurimakaveri2790]

mahe raj I don’t find it convincing :/ When delta tertiary winding is present, phase voltages on both primary and secondary becomes balanced. (As per given solution, dot polarities are satisfied by only phase b&c in primary and tertiary but what about phase ‘a’ ?) for this reason I think currents in primary has to be balanced.. so that all currents enter through dot in primary and leaves through dot in tertiary... For this problem if we consider balanced currents in primary, we get different answer. Can you explain this point please?

[@forelectRic]

Nice analysis As per my knowledge we have to consider only Ia bcz on secondary there is open ckt of b and c phases Hence there is no excitation from B and C phases of primay Now it is possible to split Ia into two halfs

[@duttadrj]

Sir please launch online classes for Electrical Engineering

[@shivanandgangadhara3422]

A delta/ star transformer has phase to phase voltage transformation ratio of K:1 (K = delta phase voltage/star phase voltage/) then line to line voltage ratio of star/ delta A)K/√3 B) K C)K√3 D) √3/K

[@shivanandgangadhara3422]

What is the answer sir.. Sir plz give ur mail id so that i can msg my doubts...

[@shivanandgangadhara3422]

What is the answer sir.. Sir plz give ur mail id so that i can msg my doubts...

[@OHMINSTITUTEHyderabad]

[e-mail]

[@krishnak8565]

C Is it curct answer?

[@wish_one_knot5006]

I think the ratio has to be 1:k because transformations ration is reciprocal of turns ratio. As it is given delta/star name plate....name plate details are always in turns ratio wise. If its 1:k then answer is root3 /k . If ratio is k:1 sticking to question notion its root3 .k

[@faizaunowar7549]

what can happen if the tertiary winding is absent, considering the same condition ? Thnks

[@OHMINSTITUTEHyderabad]

The output voltages become unbalanced.