I have a 4000A cable bus using 7 sets of 1000kCM Al XHHN conductors. Can the positive and zero sequence R and X values be computed or is some experimental data required? If it's a pure computation, can someone point me to appropriate references to do the calculation?
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Cable bus sequence values
- Thread starter rmalkemes
- Start date
The positive sequence can certainly be calculated, but it will be much simpler to find a table of resistance and reactance for aluminum conductors of the appropriate insulation and voltage. You can assume 1/7 of the value for a The zero sequence impedance will depend heavily on the ground path. Consult a reference such as Elements of Power System Analysis by Stevenson, et al. Cable manufacturers would be a good resource.
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