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  • Users: trchambe
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  1. trchambe

    Is grad school a wise choice?

    jun41, This is just slightly off the topic of your main question. But if you're concerned about getting into a better school, there may be a way. Often times, a school will allow you to take a course or two as a non-degree student to prove yourself. If you do well, they will sometimes admit...
  2. trchambe

    Experiment for Schoolchildren Edutainment

    Is this a demonstration of a pre-made experiment, or a hands-on experiment that the students build? I'd guess the most public icon of engineering for students in middle school is wind turbines. Maybe they could make one to run a small light.
  3. trchambe

    Incipient Fault Causes

    Thanks for the suggestions. I may have misunderstood... my boss may well have been referring to Buchholz Relays. I'll have to double check with him. Thanks again
  4. trchambe

    Incipient Fault Causes

    rbulsara, You mention it is more detectable in oil insulated transformers. How is it distinguished from other faults? It was suggested to me that a small opening in the insulation could result in arcing, but that the voltage through the small opening is so small that the arc cannot sustain...
  5. trchambe

    Incipient Fault Causes

    Hello all, I am a newer engineer, and have recently been given the job of performing a sectionalizing study for a local utility. As my employer was going over some of the basics with me, he mentioned enabling incipient fault detection on the substation relays. He was actually not certain how...
  6. trchambe

    Post-College Study Habits

    Along the same lines of kikflip's advice, I like to make a program in excel or visual basic that will aid in what I am learning. It forces you to beome very familiar with different relations, refreshes your programming skills, and you're left with a handy tool for the future.
  7. trchambe

    Master Degree in Power system Protection

    The University of Idaho does not offer one specifically in that specialization. What I mean is... you will not have a degree that says Masters in Electrical Engineering with a focus on Power System Protection. You will have one that indicates a focus on power. However, many of their courses...
  8. trchambe

    FEA Course Specific to EE

    To make it a bit more specific, I am most interested in FEA applied to earth grounding systems. Though I am interested to hear any suggestions to EE-specific FEA
  9. trchambe

    FEA Course Specific to EE

    I am searching for an online course on FEA applied specifically to electrical engineering. It seems that most FEA courses are within the mechanical or civil engineering department, with the instruction tailored more toward topics that would be of interest to someone of that specialization...
  10. trchambe

    Delta Neutral Reference

    It has always been my understanding that a true delta system has no neutral. I came across a few documents today however that seemed to indicate otherwise. It says that there actually is a neutral, due to capacitance between the phases. Is this true? If so, can it be used as a reference...
  11. trchambe

    Does "VELKOD" mean anything to anyone?

    I don't know for certain if these can be tied together, but I did run across the following: http://ecadigitallibrary.com/pdf/CARTSUSA09/4.7a%20Chacko-Kemet.pdf On the second page of the above link, half way down the page, the author mentions substituting case B size capacitors with either size...
  12. trchambe

    Edits not documented - can they be forced?

    That fixed my problem... it was just a formatting issue. I'm not very familiar with AutoCAD. I'm one of those engineers I mentioned that makes edits without knowing what he's doing. However, I am friends with the CAD operator and am familiar with programming at a moderate level, so I got...
  13. trchambe

    Edits not documented - can they be forced?

    When you say to "the (getvar "dwgprefix") to "c:\\revfolder\\" or something similar to your liking", must I precede "C:\\revfolder\\" by some function, indicating that it is a path name? I can't seem to tell it to place the text file in another path
  14. trchambe

    Edits not documented - can they be forced?

    That worked, thank you. I noticed however that I had to add the above code to the project each time I opened it. Is there a way to permanently associate this code with the project, so that it does not need to be added each time? I suspect that people in the office will add the reactor as...
  15. trchambe

    Edits not documented - can they be forced?

    A few people in my office have AutoCAD (two copies of 2010 and two of 2004). One of them is an AutoCAD operator, and the other three are engineers. Some of the engineers will open a drawing that the CAD operator made and make changes to it, but do not update the revisions section. They make...
  16. trchambe

    Circuit Breaker with Multiple Interrupt Ratings

    That clears it up. I was discussing this problem with a colleague, and neither of us were certain. Thanks for the help
  17. trchambe

    Circuit Breaker with Multiple Interrupt Ratings

    A low voltage molded case circuit breaker is often given several ratings of interrupt current. For example: 14kA at 600V 18kA at 480V Let's say I'm using a breaker with a 600V frame on a 480V system. Is my interrupt rating 14kA or 18kA? I was under the impression that the interrupt rating...
  18. trchambe

    Work Requiring a PE Stamp

    I'd like to begin this question by stating up front that I have no intention of this turning into a PE vs. non-PE debate, or that I am questioning the necessity of PE stamps or the qualifications or abilities of PEs and non-PEs. My question does however concern what requires a PE stamp (I am...
  19. trchambe

    Best Field in Electrical/Electronic Engineering

    I've heard many people talk about the future of young power engineers. As there are fewer schools that push people into electric power engineering, the industry is full of older engineers looking to retire in the next 10-15 years (and I'm referring to the US). An opinion I've heard on several...
  20. trchambe

    Leading Power Factor - Voltage drop

    I looked over the sheet that ScottyUK provided, but I'm having some difficulty in grasping the concept. My thought is that the current of the resonant harmonic (primarily) charges the capacitance, and all voltage losses are through the conductor resistance. As the current discharges, the...

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