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  1. arango

    Continuity as it pertains to GIS

    Trying to establish a specific way of partitioning the GIS might not be a good idea since every manufacturer has its own way of dealing with the service continuity requirements and they have a philosophy on how to establish their gas sections. A good way to approach the service continuity is put...
  2. arango

    thermal loads for foundation design in 230 kV GIS

    Hello guys, The following table presents the load combinations per node (anchoring point) provided for the design of a 230 kV GIS Node Load Case Fx [kN] Fy [kN] Fz [kN] 01 DEAD LOAD 0,94 0,00 -6,76 01 TEMPERATURE -6,34 -0,14 34,69 02 DEAD LOAD -0,95 0,00 -6,67 02 TEMPERATURE -6,13...
  3. arango

    Proper use/dimensioning of extractor fans for GIS building

    Right now I’m working on projects for different a client that involves the installation of a GIS inside a building; each of them uses have different guidelines for HVAC of the building. Some like to use extractor fans, some have asked for air conditioned (money is no barrier), some doesn’t use...
  4. arango

    Combined disconnectors

    Thank you all for your responses but I think I was not entirely clear. What I'm looking for is a manufacturer that provides a disconnector with the functions of a pantograph and a knee-type all togetherin one equipment. This equipment is used to put in service the spare unit of an inductive...
  5. arango

    Combined disconnectors

    Hello, The picture attached to this message shows a disconnector that combines a semi-pantograph disconnector and a knee-type disconnector, I’ve been searching through the web to find any manufacturer with this equipment among its products list, but so far my search has not been succesful. I...
  6. arango

    Fire walls general requirements

    Thanks for all, You have been a great help for my research, i'll start checking theses codes you named.
  7. arango

    Fire walls general requirements

    I'm sorry, but I'm not familiarized with those standards you're mentioning, I'd appreciate if you can give me a hint about where I can get them. Thanks,
  8. arango

    Fire walls general requirements

    Greetings, Im' an electrical engineer and I'm not sure if this is the right place to ask this, but i'll do it anyway, I'd like to know if anyone can help me with the necesary requirements for fire walls on buildings, I'd really appreciate it. Thanks.
  9. arango

    IEEE 14 Busbar System

    Great tip Eleceng01, this is exaclty what I needed. Thanks,
  10. arango

    IEEE 14 Busbar System

    Hi, I´m currently testing a new Power System Stability software with apparently very good results. From what I´ve researched, the IEEE has a 14 busbar system for this kind of study, I have the diagram of the system but I haven´t found any characteristics of its components yet. Could anybody...
  11. arango

    Looking for Software Tools for Relay Settings?

    Why don´t you try the following program: http://pp.kpnet.fi/ijl I have been using it and doing some comparisons with another certified program, and the results have been quite similar.
  12. arango

    Calculating Ground Potential Rise in an indoor 12.5kV substation

    There's no need to use expensive programs, you can do this by using ATP and Microsoft Excel, following the procedure proposed in the IEEE 80, the only thing else that you need is the soil resistivity. I use this very often and it has turned out to be very accurate.
  13. arango

    Residential Code

    from my experience, the electrical code of my country is based on the NEC (it's practically a translation), this code clearly specifies that neutral and ground buses be separated for the branch circuits, so I assume this requirement would apply for the NEC code too.
  14. arango

    Transient Simulation with DiGSILENT

    Hi, Does anybody know were I can find a good manual about The transient simulation in DIGSILENT? I ´d really appreciate it Thanks,
  15. arango

    System Losses

    I would like to know what kind of methods or strategies have you tried to cut down the losses, and how much do you expect to reduce them?
  16. arango

    Inrush simulation with ATP

    Hello, I asked to one of the employees of the company to do an Inrush current simulation with ATP of one transformer that is about to be connected, he handed me a model with the saturation curve included. The problem is that when you measure the voltage on the secondary, it appears with...
  17. arango

    ATP BCTRAM model transformer

    Hi everybody, I wouls to know if there is someone who could help me with a simulatuion. I´m trying to recreate the Inrush current in the BCTRAN model of the ATP and I don´t know how to insert the saturation data into this model. I really would appreciate any helpful hint about this. Thank you,

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