Table of Contents Overview Solar farms can cover large areas (up to tens of square kilometres) which presents both safety and economical challenges for design
There are several international Standards (AS/NZS, BS and IEC) which cover requirements for protection coordination of low voltage electrical systems and this article provides a summary of those as a reference.
We have benchmarked our SafeGrid Earthing Software results for a 60 x 60 m grid against well-known software XGSLab™ and CDEGS™. We show that the results for grid resistance in multilayer soils up to 5 layers are virtually identical.
The definition of emergency rating is the permissible short-term rating of a cable already loaded and at a steady-state, considering the thermal capacitances and the thermal resistances of an installed cable system. The definition of cyclic rating is the maximum current of a cable when the load is varied in a sequence of steps that are repeated cyclically. The cyclic rating differs for different sequences and different cycle periods. Both emergency and cyclic ratings deal with time-varying loads
This paper analyses the magnetic fields, in the context of a health and safety-related issue, produced by electrical power cables installed in various configurations under varying conditions. A specialist calculation module in-built to ELEK Cable High Voltage software has been used for calculating the results based on the Biot-Savart law.