Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Register Log in
  • Congratulations TugboatEng on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Recent content by SMLD

  1. SMLD

    SCADA help, please

    Thanks for the input guys....much appreciated.
  2. SMLD

    SCADA help, please

    Thanks for the response, I am currently reviewing general SCADA specs of different manufacturers for the electrical utility market. I understand what SCADA is and what it can do, however, I do not understand alot of the small details written in some of the specs. This is making it tough for...
  3. SMLD

    SCADA help, please

    Hello all, Can anyone give me a link or two regarding SCADA basics, specs, and general knowledge. Thanks, much appreciated Chris
  4. SMLD

    Transformer oil leaks, How to repair it ?

    We had a leak on an inlet fin of one of our 24mW station xfmrs 5 years ago. A service company called United Power Group(UPG) located in Brockton MA, actually pulled a vacuum on the xfmr and repaired the leak, filtered the oil, and performed a disolved gas analysis. This was all done in the...
  5. SMLD

    Capacitor Bank Placement

    System: 115kV/13.8kV substation with two 22mVA self tapping xfmrs, four 800amp circuit breakers feeding four 13.8kV wye distribution circuits, with 477mcm al conductors. Total peak load of system is 13mW. The system has 7 capacitor banks, of various kVAR ratings, on time control...
  6. SMLD

    Generator Output vs. Power Factor.

    I'm confused with iain1's posts.... I have been taught that kVA (Apparent Power) already has the power factor calculated in. Secondly, kW ( true power) does not reference PF. 2200kVA and 1760kW@.8pf being synonomous. I do agree with iain1 that Gen mfgs want to make their gen sets look as...
  7. SMLD

    Static wire holder arcing to ground ???

    The NEC implies that the ground resistance should be measured at the time of installing the ground and that the ground resistance must not exceed 25 ohms for artificial (buried or driven) grounds, (AEH) The NEC also goes on to state acceptable ways to reduce the resistance if it exceeds 25...
  8. SMLD

    Static wire holder arcing to ground ???

    Yes, ideally we like to have a #2 cu vertical down ground on every pole, due to the lightning season. Also, having a good gound on every pole, ( 25 ohms or less)ensures that if there is an electrical fault on a pole, the feeder breaker will trip much faster due to the higher fault current. In...
  9. SMLD

    Static wire holder arcing to ground ???

    Yamin, I had a similar problem on my 13.8kV system about 5 years ago. We had a pole top guy wire, guying a pole, burn off and detach from the pole. Upon investigation, I concluded that the guy had a much lower impedance than the vertical down ground, 20 ohms verses 450 ohms, respectfully...
  10. SMLD

    Generator Output vs. Power Factor.

    Hello everyone, I'm Chris Courville, the one who initially started this thread. The responses to this thread have been very helpful, and I personally thank each of you. The mechanic I referenced in the question, as it turns out, was indeed talking about the prime mover being overloaded, not...
See more

Part and Inventory Search

Back
Top