Protection of the Neutral Conductor
Protection of the neutral conductor in three (3) phase systems needs to be given importance during design, particularly on reduced neutral conductor size and when the presence of harmonics is …
IEC 60076-5 Transformer Impedances
The impedance of a power transformer has a direct impact on the total cost of the power system. Cost of power transformer, protective devices, etc will be affected. Electrical Engineers …
IEC Motor Protection Coordination
IEC 60947-4-1 addresses coordination between the motor circuit protective devices and the motor starters. It also provides a method to measure performance of these devices if a short-circuit occurs. This …
IEEE / IEC Oil-immersed Transformers – Methods of Cooling
Oil-immersed transformer cooling methods are consistent in both the IEC and IEEE. This designation is one of the few that is the same for both standards. Oil-immersed transformer cooling method …
IEC 60909 vs ANSI/IEEE 141 Short-Circuit Current Calculations
Short-circuit calculation is one of the most important work to be undertaken in plant power distribution. A comprehensive, detailed and accurate short-circuit currents will be used in switchgear selection, protection …
Motor Cable Selection Chart Explained
Important: Please note that any materials presented herein is subject to the conditions of the disclaimer of this site. I am receiving a significant number of enquiries on how to …