Fault level & Voltage Drop Calculator
Voltage Drop Simplified
Force on Cables
Power Calculation
Ohms Law
Energy Cost Calculator
CABLE RUN CALCULATOR FOR 3 PHASE FAULT LEVEL AND VOLTAGE DROP.
Supply Voltage 400V 50Hz
Xc and Rc values based on AS/NZ3008.1.1:2009 Tables: 30-39
Voltage Drop: Based on AS3008.1.1 2009 Clause 4.3.(2) Determination of Voltage drop from Circuit Impedance
Enter Values
Incoming Supply Short Circuit Current(Isc): kA
*
Cable Run Length in mtrs(L)
*
Conductor Type
Cables
Flexible Cables & Cords
MIMS
Single Core Arial
PVC
XLPE
Elastomer
Cable Size mm
2
1
1.5
2.5
4
6
10
16
25
35
50
70
95
120
150
185
240
300
400
500
630
Copper
Aluminium
Installation
Single-Core Trefoil
Single-Core Flat Touching
Multicore Circular conductors
Multicore Shaped conductors
Number of Cables per Phase (P)
1
2
3
4
Conductor Temperature: Deg.C
45
60
75
90
110
Phase
Single Phase
Three Phase
Load Current(I): A
Result
End of Run Fault Level(Icc)
Voltage Drop(Vd)
Impendance Of the Cable(Zc)
Supply Impedance(Zs)
Resistance of the Cable(Rc)
Reactance Of the Conductor(Xc)
Supply Impedance: Zs = 240/Isc/1000
Cable Impedance: (Ohms/km) Zc = √(Rc
2
+ Xc
2
)/P/1000
Fault Level: Icc=240/(Zs + (L x Zc))/1000
Voltage Drop: Vd = I x L x Zc/1000
