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  1. alone021

    grounding grid observation profile in CDEGS

    Thank you, huskyeng, yes, so only observe the grid area, not see any of the issues outside---does it compliance with both IEEE 80 and CSA C22.1 36-304?
  2. alone021

    grounding grid observation profile in CDEGS

    Thank you, DBL-E, and Yes, there is crushed rock covers beyond 3 feet of grid. So it is OK to not observe this extra 3 feet of crushed rock area? The project is in Canada, so CSA C22.1 36-304 also applies here, which asks to have 1 meter extend out of grid. So I am just wondering if the...
  3. alone021

    grounding grid observation profile in CDEGS

    Hello, IEEE std 80-2013 mentioned grounding grid is normally set 3-4 feet extension out of the station fence boundary. And in CDEGS, the observation profile is set at another 3 feet extension out of the grounding grid boundary. My question is if there is any colorful spots shown on the outer...
  4. alone021

    transformer low side fault current calculation

    Thank you. so it is a LLL fault current, is it because the source 3-phase fault level at 2500MVA is given? and if the source LG or LLG is given, we could use the same method to get the transformer secondary LG or LLG fault current, right?
  5. alone021

    transformer low side fault current calculation

    Hello everyone, I read a thread here before, which said utility fault level was given, and utility connects to the high side of a transformer, nameplate information is 20 MVA, 8.2%, 161:13kV, asked how to calculate the transformer low side fault current...below was the solution in that thread...

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