When the Basis of Design Fails to Serve its Purpose
With any design, one the first documents to be produced will be the Basis of Design. This document will encapsulate all the requirements of the project. Any project requirement missed …
IEC Equipment Voltages
There are two (2) voltage levels used in IEC, low voltage ( < 1000 V ) and high voltage ( > 1000 V ). Medium voltage, inspite being oftenly used …
10 Reasons to Use Per unit
In the advent of computers, per unit or percent methods of calculations simplify short circuit calculations. J. Lewis Blackburn and Thomas J. Domin, in their book Protective Relaying, Principles and …
IEEE and IEC Interface
A project dealing only with either IEEE or IEC standards is not an issue. If there will be mix standards within a single project, then compliance becomes an issue. In …
Advantages of Per Unit and Percent Calculations
Power System analysis software are very expensive beyond the reach of small and medium enterprises. The only option, when fault analysis is required, is to perform calculations manually using available …
Old School Method Rocks (Do not be an Idiot)
I am an advocate of Old School methodologies. Old school method rocks. A scientific calculator, a writing pad, a pen and probably a straight rule are the only basic tools …