Cable Nitrogen Purging
Want to learn power system protection? Check out our courses: PROT400 - Industrial Power System Protection - Click Here for Details PSA400 - Fault Analysis with Applied Symmetrical Components - Click Here for Details Underground cables at project site Problem...
Case Study: Arc Furnace Capacity Upgrade
Switchyard of the Steel Manufacturing Plant Project background: The client, who is a steel melting and manufacturing company in Illinois, USA, wanted to increase production output capacity by increasing the number of heats per shift from five (5) heats to seven (7)...
Transformer Primary & Secondary Protection based on National Electrical Code
Part of our job as an engineer is to check the design of other designers, engineers and of electrical product manufacturers. We call this QA/QC or Quality Assurance and Quality Control. Most companies have this system in place. It is a process to make sure that...
Power Systems Protection & Control – The Anti-Pumping Relay Application
Background - The Anti-Pumping Relay Function In power systems protection, the control circuits of circuit breakers are designed in such a way to prevent the circuit breaker from closing and opening multiple times successively as it will damage the breaker closing...
How to Become a Professional Electrical Engineer (Philippines)?
Click on the Registration link for a Free Account so you can access training and videos as I add them as we go along. For those interested to get a copy of a Professional Electrical Engineer (Philippines) Technical Engineering Report HERE, login required to access. In...
Effects of Harmonic Currents on Power System Part 2
This is the continuation of Part 1 where we established the theory behind this subject and also proved by using calculations and by plotting the sine wave curves of fundamental and 3rd harmonic currents. Let us then try to investigate why 3rd harmonic currents seems...