Searched the thread archive for this one, but didn't find what I was looking for.
After showing someone how to calculate NPS currents from Generator data, they asked my a question that I had never even asked myself, and couldn't answer - What makes NPS currents rotate counter to the rotating...
Quick one for the North American audience:
Are there any standards (NEMA/NFPA/NEC or other) that specify that thermal overloads need to be current injection tested periodically, and/or after replacement?
There are pro's and con's for testing them - pro's are obvious, but the con's are that they...
I am having a bit of trouble getting my head round a problem regarding to systems of varying voltages running in Isolated Earth configuration. It is a floating vessel which comprises of a Topsides earthed system at 13.8kV, and feeders from the Switchboard go to the Marine side (Hull)...
I need to roll out an electrical generation presentation to groups of Technicians to help underpin their understanding of generation principals. I was separately discussing with one of them about why Generators tend to slow down when load is applied, and how the Governor is increased to correct...
I am trying to make sense of currents I am seeing on 2 parallel incomers to a switchboard. We have a 480V Emergency Board with a main incomer from our grid (made up of 9 Turbine Generators), and a Diesel Generator (DG) incomer with a rated power of 1310kW. The intention is that if normal power...
Sorry for the lengthy write up on a comparatively simple issue, but I want to provide all the info up front. I have tried to find this answered in other threads but found none that address this precise question.
As a European, I need a little advice on the interpretation of the NEC code for...
