Cable sizing calculation sheet with formulaFull description
HT Power Cable Sizing Calculation
Calculation for Short Circuit Current Calculation using IEC / IEEE Standard. This report contains the description for calculating the short circuit current using IEEE 909 and circuit breaker…Full description
Ampacity Calculation
Audit of Current LiabilitiesFull description
Cable charging current calculation Cable charging current, Ic where Ic is Amp./km. C in microfarad / km En voltage to neutral in volts
capacitance as indicated Riyadh cable cat.
microfarad/KM
Voltage per phase Ic Ic
volts Amp/km Amp/meter
=
2PifCEn
25
35
50
70
0.21
0.23
0.25
0.29
2.40 190.05 0.19
2.40 208.15 0.21
2.40 226.25 0.23
2.40 262.45 0.26
Value of cable charging considered in the calculation as per various journals published
=
0.23
Amp./ft
=
0.77
Amp./mete
Conclusion is that the value considered in the calculation is higher than the actual values calc revising the calculation does not arise.
onductor size in sq.mm. 95 120
150
185
240
300
0.31
0.34
0.37
0.4
0.44
0.48
2.40 280.56 0.28
2.40 307.71 0.31
2.40 334.86 0.33
2.40 362.01 0.36
2.40 398.21 0.4
2.40 434.41 0.43
r ulated using the cable capacitance and hence the need for
