Name that gear game..

Discussion in 'Electrical Forum discussion & Blog' started by Vegas_sparky, Jun 6, 2014.

  1. Vegas_sparky

    Vegas_sparky Digital Billy

    Messages:
    379
    Location:
    LV,NV/ Nowhere,UT
    I know this wasn't easy, but its pretty neat, so I wanted to share. This is a fairly old 3 PH/480V/1600A Wye start/delta run motor starter. Its used to control a very large motor, which doesn't require a lot of start up torque, and minimize the mechanical shock load when started. If you look at the left/center side of the cabinet, you'll see the resistors which reduce the voltage during starting. After a set time after starting, the feed from the resistor side is disconnected, and switched to the full voltage side for running via the large contactors at the bottom. Nowadays VFDs typically handle the duties for these operations, as they are much more efficient.

    No points(even though some of you were close), and anyone can post the next pic. If nothing comes up, I have lots more junk to show.
  2. fullysprinklered

    fullysprinklered Member

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    256
    Location:
    Georgia
    power supply for the worlds largest electric tankless water heater
  3. ActionDave

    ActionDave Electrician

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    361
    Location:
    Colorado
    Post your next pic I want another chance.
  4. Vegas_sparky

    Vegas_sparky Digital Billy

    Messages:
    379
    Location:
    LV,NV/ Nowhere,UT
    What's this?

    [​IMG]
  5. ankhseeker

    ankhseeker Member

    Messages:
    80
    Location:
    California
    it looks like a contact plate/rotor assy for a rotating sign. ?
  6. bluebinky

    bluebinky Member

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    408
    Location:
    Santa Clara, CA
    I donno, but the phillips head screws on the bearing cap at the top/front and the plastic zip-ties are out of place.

    Is this still being used?
  7. Vegas_sparky

    Vegas_sparky Digital Billy

    Messages:
    379
    Location:
    LV,NV/ Nowhere,UT
    It is still in service, even though it should be in a museum. Ankh is pretty close.
  8. Reach4

    Reach4 Well-Known Member

    Messages:
    2,643
    Location:
    IL
    I say elevator controller.
  9. Vegas_sparky

    Vegas_sparky Digital Billy

    Messages:
    379
    Location:
    LV,NV/ Nowhere,UT
    Jessi and I say you're right, Reach. This old switch is part of the elevator controller at what was the Sahara(now SLS). The mechanics are pretty interesting compared to all of the solid state equipment used today. Between the chatter of the equipment, and all the heat given off, the stairs don't seem so bad. LOL

    You get the first point, and a pic for a prize.

    You also get to post the next one.

    Attached Files:

  10. Reach4

    Reach4 Well-Known Member

    Messages:
    2,643
    Location:
    IL
    Sorry I don't have a better one. I just took this one... more electronic than electrical maybe. huge_c2.jpg
  11. johnfrwhipple

    johnfrwhipple Bathroom Design & Build - North Vancouver, B.C.

    Messages:
    4,701
    Location:
    North Vancouver, BC
    Finally a show girl.

    I was loosing faith in you Vegas.

    I was going to guess some kind of control for blinking lights in a slot machine....

    I suck at this game.

    [​IMG]
  12. Kiton

    Kiton Member

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    61
    Location:
    Quebec
    You posted a second elevator startup switch picture?!! :D:D

    Attached Files:

  13. PatrickH

    PatrickH New Member

    Messages:
    17
    Location:
    Virginia
    Ok I'll give it a WAG. Hmm? It's a 480 volt, 3 ph, forward and reverse motor controller? For an exhaust fan? Pump?
  14. Kiton

    Kiton Member

    Messages:
    61
    Location:
    Quebec
    Jumper cables, home made.....:confused:
  15. Reach4

    Reach4 Well-Known Member

    Messages:
    2,643
    Location:
    IL
    The electrical tape to spread the bending area was added, but the probes were included with an instrument.
  16. PatrickH

    PatrickH New Member

    Messages:
    17
    Location:
    Virginia
    Don't know how I wound up commenting on this post. I thought I was commenting on the other enclosure.
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