What Types of Testing in 11Kv Ht Switchgeat During Testing

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    12/9/2014 What types of testing in 11Kv Ht switchgeat during testing?

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    Question What types of testing in 11Kv Ht switchgeat during testing?

    Question Submitted By :: Electrical Engineering

    I also faced this Question!! Answer Posted By

    Answers were Sorted based on User's Feedback

    Answer

    # 1

    I think that site tests.ie. Pre commissioning Tests of

    following.

    1. Insulation Resistance Test for breaker and protection

    and other cables

    2. Check for spirit level3. Mechanical spring charge test

    4. Mechanical ON/OFF test

    5. Electrical spring charge test

    6. Electrica ON/OFF Both Local and remote Test

    7. Contact resistance Test

    8. opening and Closing timings tests.

    9. Protection trip Test

    10. Check for operation of Closing coil at 80% and Trip

    coil at 70% rated Control D.C.voltage

    Is This Answer Correct ? 8 Yes 0 No

    N.Venkidusamy

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    Answer

    # 2 I belive you mean commisioning tests.

    some of them are,

    A)INSULATION TEST

    b)contact resistance test

    c)HV holding test

    d)primary and sec injection test on the protection cct

    e)transformers insulation, ratio test,vector group, insulatingoils dielectric tests.

    f)cables insulation, phasing test

    Is This Answer Correct ? 9 Yes 3 No

    Pillay

    Answer

    # 3

    Transformer:

    1)IR Test

    2)Magnetising Current Test

    3)Magnetic Core Balance Test

    4)Vector Group Test

    5)Ratio Test

    6)Polarity Test

    7)Oil Test (DGA,Dielectric Strength,Moisture content)

    8)RLA test (Dirana, Thuran)

    Current Transformer :1) Ratio Test

    2) IR Value Tset

    3) Polarity Test

    4) Knee Voltage Check

    5) Winding Resistance Test

    6) Back to Back Test

    7) Tan Delta Test

    8) High Voltage Test

    Breacker Test:

    1) IR Value Tset

    2) Contact Resistance Test

    3) Closing Tripping Timing Test

    4) High Voltage TestIsolator Test:

    1) IR Value Tset

    2) Contact Resistance Test

    3) Closing Tripping Timing Test

    4) High Voltage Test

    5) Hot point Check ( in running condition)

    Is This Answer Correct ? 4 Yes 0 No

    Mriganka Das

    PCBA TestTest System Development, ATE tester Custome design, Turn-key service

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