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geometric factor chart for shaped conductor

geometric factor chart for shaped conductor

geometric factor chart for shaped conductor

(OP)
Is any one have geometric factor chart for 4/c,3/c,31/2c  shaped conductor and dimensional chart for different sizes of shaped conductor power cables pvc or Xlpe insulated/ pvc sheathed belted cables?

RE: geometric factor chart for shaped conductor

Do you mean geometric factor as per IEC 60287-2-1 "Thermal resistance –Calculation of thermal resistance"?
No cable catalog would mention the G factor .Maximum will give the ampacity [current-carrying capacity] for free air or underground installation as per vde 0298 or NEC or other national standard.
If you intend to calculate this you may comply with IEC 60287-2-1 Ch. 2.1.1.2.5 "Three-core belted cables with sector-shaped conductors" as fair enough.
 

RE: geometric factor chart for shaped conductor

(OP)
with out geometric factor one cannot determine inductance, capacitance of 4core,31/2core belted cable.... one must also know the 90 degree and 120 degree shaped conductor edges angle curved by shaped roller.

RE: geometric factor chart for shaped conductor

I think what you meant by "Geometric factor" could be what in transmission overhead line it is called GMR [ Geometrical Mean Radius] a radius of an equivalent hollow conductor. As the line reactance depends upon two factors :GMD[Geometrical Mean Distance] and GMR, in order to calculate the reactance for different positions of the phase conductors one needs to know GMR and usually the Manufacturer will produce it.
But for the cable the GMD is very close to insulated core diameter and it is very difficult to appreciate it by calculation. Usually the manufacturer gives the measured values of X and C. R is less influenced by GMR and skin and proximity effect could be calculated as for class II [or B] stranded.
The GMR of copper compacted conductor is very close to 0.7788*r.[r=conductor diameter/2]
 See for instance the Nexan data:
http://www.nexansenergy.com/egy/power/csa/conddata.html
 

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