Short-circuit apparent power of the system
When doing power systems study, it always the predicament of Electrical Engineers where to get the values of the utility short circuit MVA. I was just talking to a senior …
Life Without Electricity
Imagine a day in the life of a modern man without a mobile or cell phone, moreso without electricity? Let us start from the dawn of a new day. The …
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 …
Fault Sequence Network Connections
Important Note: Open circuit faults are presented in this article. Calculating three-phase faults is very straightforward. Unbalance faults, however, have a little bit of challenge in it as it requires …
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 …