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Topic: Current Transformer Test

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Koperal
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Current Transformer Test
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CT details:function Disciminating zone

Ratio= 3000/1A

Class = X 

VA= 30VA

Rated Volt= 145kv

 

1) insulation test

2) Polarity test

3) DC resistance test

4) magnetisation test

5) Ratio at rated burden test

6) primary injection test



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Staff Sarjan
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good info..mcm mana kaedah pengujian nya pula?? share sket

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ZD
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1) pengujian melakukan insullation test

      Primary to Earth

      Secondry to Earth

      Primary to Secondry

2) Polarity test

      untuk menentukan keduudukan P1-P2 Dan S1-S2 pada CT adlah betul..

3) DC resistance test

      Mengukur Nilai resistance pada winding CT dengan injection DC voltage measure       resistance pada CT..

4) Magnetisation test..

    Membuat graf voltan dan arus knee point(tepu) pada CT..injection voltage pada S1     dan S2 dengan mengambil nilai arus kenaikan sebanyak 50% dan voltage 10%           sehingga dapat nilai knee point CT..

5) Ratio at Rated Burden

    Menguji nilai burden VA pada CT dengan menyikut name plate CT..inject current pada P1-P2 kemudian pada S1-S2 disambung pada resistence dengan nilai resistance gunakan fomula VA=I2/R..inject current menyikut nilai ratio CT measure voltage dan current kemudian calculate kedua2nye..

6) Primary injection Test..

   Menguji CT circuit sehingga ke relay protection atau metering..inject current pada P1-P2 Kemudian measure pada secondry di relay protection atau metering..Lakukan setiap phase..

 

kerja2 Testing dilakukan di Site pada CT High Voltage..

 



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Laksamana Muda
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Reading untuk 6 ujian tu pulak?

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Koperal
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reading untuk test kene ikut expected manufacturing dan standart SAT procedure..(site accepted test)



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Laksamana Muda
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i see..

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Henry Ford
Coming together is a beginning. Keeping together is progress. Working together is success.

MFC Commissioner [OFFICIAL] CODE: 1601

IEEE Members CODE: 92905849

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Staff Sarjan
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good..

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ZD
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