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  1. SamHans05

    How many times does the Lightning Impulse test and AC withstand test can be done?

    Hi PRC, I Checked in IEC 60076-1 (2000), there is no written standards saying that no repetition for dielectric test... I check also this item in IEC 60076-3.. Anyway thanks for your kind reply. Regards,
  2. SamHans05

    How many times does the Lightning Impulse test and AC withstand test can be done?

    Hello Everyone, Just to ask regarding the testing of our 230kV transformer. The vendor is telling us that the the AC withstand test and Lightning impulse test can be done in one time only. My question is, does it written somewhere in IEC or any standard that this test shall be one time test...
  3. SamHans05

    What is the main purpose of Neutral Grounding transformer in power transformer?

    Thanks to all your inputs. Appreciate it.
  4. SamHans05

    What is the main purpose of Neutral Grounding transformer in power transformer?

    Hi Everyone, Good day to all. I just want to have more detail what is the main purpose of Neutral Grounding transformer instead of using neutral grounding resistor? Hoping to receive a clear feedback. thanks
  5. SamHans05

    GIS Testing

    Thanks for all your reply. Appreciated.
  6. SamHans05

    GIS Testing

    HI everyone good day. Just want to ask regarding the HV test for the GIS having 230kV. My Contractor is telling me that during the HV test they want to take out the Surge arrester and VT. For me, VT is fine that they should not include when there is an HV test but im still confused why they dont...

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