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  1. essamalbanna

    Earthing of neutral point of power transformer

    Why does the neutral point of power transformer in MV grid be earthed through NER, but in EHV and HV grids that point be earthed directly?
  2. essamalbanna

    Surge arrester at the neutral point of HV transformer

    I'm searching for a logical explanation or practical purpose for installing a lightning arrester at both neutral points of the transformer 220/66 KV, YNynd11, Although both neutral points are connected directly to earth through a disconnector!?. What's the function of that disconnector?
  3. essamalbanna

    Surge arrester on the earthed neutral point of HV transformer

    I'm searching for a logical explanation or practical purpose for installing a lightning arrester at both neutral points of the transformer 220/66 KV, YNynd11, Although both neutral points are connected directly to earth through a disconnector!.
  4. essamalbanna

    Diesel Generator

    Hello All, I want to buy a diesel generator for my house. Total normal load about 15 Amp at 220V.but there are some loads have high starting current. total starting current around 50 Amp. my question is : Is it enough to buy a diesel generator it's rated power 5KW (25 Amp)?

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