Concept Selection or Detail Design
Which do you like better “Concept Selection” or “Detail Design”? I was once asked this question in one of my job interviews. To understand this discussion better, we need to …
Differential Protection – Fast and Reliable
A few years back, I was seconded to assist in the commissioning of a cooling tower for a 1000 MW coal thermal power plant. The cooling tower was not a …
IEC 61439-1 Minimum Size for PE, PEN Conductors
Background In 2010, the new standard IEC 61439 series was published to replace the IEC 60439 series. The purpose of the IEC 61439 series of standards is to harmonize as …
Conductor Stranding – IEEE vs IEC Standards
Important Notes: A conductor size expressed in mm² shall be IEC standard and sizes in AWG or kcmil shall be IEEE standard. PEC standard conductors are similar to IEEE standards …
GMD, GMR and Waterfall Charts
Waterfall charts are useful tools in design when there is a very wide range of possibilities and something needs to be done. A good example of this is cable selection. …
Three Elements of Good Engineering Design
Practically, all engineering design problems require three (3) elements to come up with a complete solution. 1. Measurable Elements. These elements can be determined with exactness. Example – material costs, …