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 cowski on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Search results for query: *

  1. Sempronio1960

    Operation of asynchronous engine in escalators moving down

    I am interesting about operation of asynchronous engine in escalators moving down. Is the engine working as generator? If so, can an overload beyond maximum couple cause an escalator overspeed? Moreover, in generator operation, is the energy lead into grid or dissipated in a rhesostat? Thank for...
  2. Sempronio1960

    Insulation provisional airline 11 kV

    A three-phase 11 kV aerial line on metal supports must be transferred to the new higher metal supports substantially in line with earlier. The supply line must be kept available, although of course out of service, during the raising of the new poles, but one of the phases goes to touch them. It...
  3. Sempronio1960

    Electrostatic charges on a bare wire stretched in the air?

    A bare wire stretched in the air, in particular the conductor of a power line taut between their supports on its isolators, and never fed, without any type of electrical connections at the ends, can be the site of electrostatic charges? If so, why?
  4. Sempronio1960

    MV cables with LV cables

    I would like to ask if it is allowed lay MV cables (e.g. 20 kV) in tunnels or wells where LV power/control/monitoring cables are laid. See photos, please. http://snag.gy/p1DsC.jpg http://snag.gy/wswzq.jpg http://snag.gy/Jb5o7.jpg http://snag.gy/1iGwA.jpg
  5. Sempronio1960

    Suggestion for a refresh-book about power plants

    I am looking for a refresh book about power plants/systems. I like Nasar "Schaum's Outline of Electrical Power Systems" but I find many mistakes. Do you have any suggestion? What do you tihink about Wayne "handbok of electric power calculations"?
  6. Sempronio1960

    Anti-theft solutions for copper cables: questions

    Do you know these http://bernatom.com/uk_savoir-faire-recouvrement-cables-cuivre.php http://bazkideblog.eraikune.com/2012/05/sistema-antirrobo-de-cables-de-cobre/ ? Any experiences? I like the first. Do you have other suggestions?
  7. Sempronio1960

    Concrete platforms in a substation

    Concrete platforms with electrowelded net are being realized in a substation renovation, see the photos. Do you share this solution?. I have some doubts about those because the earth grid becomes inaccessible.
  8. Sempronio1960

    SF6 "Voltage Transformers" in HV (150 kV) lines

    Do you have experience of SF6 "Voltage Transformers" in HV (150 kV) lines? Which problems would you consider (explosions, ecc.)? P.S. example http://www.trenchgroup.com/en/Products-Solutions/Instrument-Transformers/Inductive-Voltage-Transformers/SF6-insulated-Inductive-Voltage-Transformers
  9. Sempronio1960

    How to use a total station?

    Sorry for the sacrilegious question, out of curiosity I would at least understand how such an instrument. I've had a rough idea of the rudiments of the theory (put up the instrument, collimate, etc..). I also have a Trimble 5600 of about ten years, without at least one couple of years and I...
  10. Sempronio1960

    Working in a Substation (132 kV)

    A question about a 132 kV substation working. For photo, link to http://img849.imageshack.us/slideshow/webplayer.php?id=22131448.jpg please. I would want to ask you what you think about a wood barrier, done in it to separate "Vicinity zone" from a "Live working zone" (as in EN 50110-1...
  11. Sempronio1960

    Three-Phase Impedance Load (star or mesh) in ETAP

    Hi, I don't know represent a Three-Phase Impedance Load (star or mesh) in ETAP. Is it possible?

Part and Inventory Search

Back
Top