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Recent content by AntonNel

  1. AntonNel

    IMPEDENCE VALUE OF 3CX185 SQ MM PILC , COPPER CABLE

    Go to www.generalcable.co.nz for some helpful data sheets on cables.
  2. AntonNel

    Yd3 Transformer?

    Hi. Can anyone tell me what the advantages are on using a Yd3 vector group. These transformers are feeding a paper mill plant. Can anyone suggest reading material or papers explaining the reasons for the different vector groups. I understand how the phase shift occur. It is why that I am not...
  3. AntonNel

    IMPEDENCE VALUE OF 3CX185 SQ MM PILC , COPPER CABLE

    Who is the manufacturer. The zero sequence impedance is a function of the cable shielding and type. Is this for mines?
  4. AntonNel

    Load Flow First?

    For Loadflow Analyses, I recommend using cable impedance etc, calculated at about 40 deg celc.(Higher impedance = larger voltage drope). From my point of view, I recommend you keep the load flow and sc study seperate. I use a system temperature of about 25 deg celc. There are a couple of...
  5. AntonNel

    Supplying a Grounded Wye Transformer From An Ungrounded Source

    I have a similar problem. I have to design a 11kV/415V, YNd11 - mobile substation. The LV will be connected to 1000 - 2000 kVA generators, Connected Y - grounded. When the HV breaker is closed with the LV breaker open. No earthing point exist on the LV. The LV will be proteced by a residual...
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