IEC Cable Sizing

The IEC Cable Sizing function of PowerFactory is calculating the current-carrying capacity of cables. The current-carrying capacity in PowerFactory is specified by two parameters. These are the nominal current and the rating factor. The nominal current of a cable is calculated from the construction of the cable (insulation, conductor, ...). The rating factor depends on ambient conditions like temperature and laying arrangement.

The calculation is based on IEC-364-5-523 electrical installation of buildings. Chapter 52 wiring systems, section 523 - current-carrying capacities. According to this standard the current-carrying capacity can be calculated for non-armoured cables having a nominal voltage not exceeding 0.6 kV/1.0 kV, only.

An additional command is available for verification of cables feeding loads and asynchronuous machines. A short circuit calculation, a motorstart and a loadflow during normal operation are calculated. Then the calculated voltage drops and currents are verified for their permissible ranges.

• Introduction
• What makes PF unique
• General Concept
• Mode of Operation
• Data Management
• The Graphical Editor
• Documentation
• Load Flow Analysis
• Optimal Power Flow
• Fault Analysis
• Protection Functions
• Harmonics
• System Dynamics & EMT
• Transient Motor Starting
• LV Network Analysis
• Distribution Network Optimisation
• IEC Cable Sizing
• Reliability Analysis
• DIgSILENT Programming Language (DPL)
• Installation Options
• Compatibility
• Connectivity