nctps

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  • 8/17/2019 NCTPS

    1/25

    changing back and forth between tap positions 2 and 3

    Operating sequence of

    On Load Tap Changer 

    http://en.wikipedia.org/wiki/Image:Tap_changing.gifhttp://en.wikipedia.org/wiki/Image:Tap_changing.gif

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  • 8/17/2019 NCTPS

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    250 MVA, 230 / 15.75 KV GT Core & Winding

    Failed Winding

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    Slide by Er..!."#"$.%EE&T'&Chennai

    OLTC i!er"er 

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    (i)erter

    Contacts

    i!er"er

    Con"a#"$

    Slide by Er..!."#"$.%EE&T'&Chennai

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    Ta%ing

    Lead$

    Ta%ing

    Lead$

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    Failed Coil

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    a'e

    (la"e

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    e)e#"i!e

    (or"ion o)i!er"er *+i"#

  • 8/17/2019 NCTPS

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    e)e#"i!e

    (or"ion o)

    i!er"er *+i"#

  • 8/17/2019 NCTPS

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    Fi)" Li'- o) "e Core +i# doe$ no"

    #on"ain +inding

  • 8/17/2019 NCTPS

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    Failed V Coil

    eal" LV Coil

  • 8/17/2019 NCTPS

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    Failed Coil

    Colla%$ed Coil

    %or"ion are !i$i-le

    ere

  • 8/17/2019 NCTPS

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    T+o Col'n$ o) Ver"i#al Core

  • 8/17/2019 NCTPS

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    (re%aring "e

    Ta#le )or Coil

    n$er"ion

    Ti$ i$

    Li)"ingTa#le

  • 8/17/2019 NCTPS

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    Ta#le i$-eing

    )ied"o ne+

    Coil

  • 8/17/2019 NCTPS

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    e+ Coili$ -eing li)"ed

  • 8/17/2019 NCTPS

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    e+ Coil

    -eing Li)"ed

  • 8/17/2019 NCTPS

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    New Coil being

    Inserted in Core

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     Aerial View of NCTPS Repair Bay 

    Transformer

    Bell Cover 

  • 8/17/2019 NCTPS

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    Core sheet is being

    staced in core

  • 8/17/2019 NCTPS

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    Woring T4 *"a)) in

    La"e ig"

    "i )

  • 8/17/2019 NCTPS

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    n$%e#"ion o)

    Coil$ -

    A6/(TM/T4

    A -li )

  • 8/17/2019 NCTPS

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    A$$e'-ling o)

     oe Cannel