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  1. kevc70

    Short Circuit Force on Aluminum Bus Bars

    Thank you for the responses so far! Here is some additional information for this transformer: The insulating fluid is FR3. The X/R ratio is 6.7 Total Secondary resistance is 0.12810E-02 @85C, and .10331E-02 @ 25C. Step up transformer 65 degree average winding rise KNAN cooling class Where...
  2. kevc70

    GPO-3 Material Properties

    Hello, I am looking to make a custom material addition for GPO-3 (Glastic) in Autodesk Inventor so I can do some stress analysis. I am having a hard time finding all of the properties that Inventor would require for GPO-3 material. These are the properties that are required for the material...
  3. kevc70

    Short Circuit Force on Aluminum Bus Bars

    Hello, 1. The %Z from the transformer nameplate is 5.85. There is (1) bus bar per phase. 2. The spacing between the each of the bus bars is 6.25" center to center.
  4. kevc70

    Short Circuit Force on Aluminum Bus Bars

    For this study it would be electromagnetic.
  5. kevc70

    Short Circuit Force on Aluminum Bus Bars

    Hello, I am wondering how to compute the short circuit force that would be exerted on (3) aluminum bus bars within a 3 phase transformer. Here are the specs: 2750 kVA 3 phase transformer HV voltage is 13200Y/7620 LV voltage is 600 Delta LV current is 1528A (3) LV bushings on right side of...
  6. kevc70

    Short Circuit Force on Bus Bars for Low Voltage Connection

    Hello, I am wondering how to compute the short circuit force that would be exerted on (3) aluminum bus bars within a 3 phase transformer. Here are the specs: 2750 kVA 3 phase transformer HV voltage is 13200Y/7620 LV voltage is 600 Delta LV current is 1528A (3) LV bushings on right side of...
  7. kevc70

    Saving Title Block and Border in AutoCad Inventor

    Hello, I have a drawing that has a title block and border that I would like to save as a template to use for future drawings. Is there a way to remove the part reference in the drawing and just save the remainder (template/border) as the new title block template? I also want to make sure I...
  8. kevc70

    AutoCad/Autolisp commands for rotating text and inputting rev notes

    Hello, I am wondering if there is a way in AutoCad Mechanical to create a command that prompts a user to input a single line of text (can be multiline as well) and after inputting the text, a rotation of text prompt is given. When the user puts in 90, 180, or 270, it will then prompt the user...
  9. kevc70

    AutoCad Command (AutoLisp) for rotating text and rev notes on drawings

    Hello, I am wondering if there is a way in AutoCad Mechanical to create a command that prompts a user to input a single line of text (can be multiline as well) and after inputting the text, a rotation of text prompt is given. When the user puts in 90, 180, or 270, it will then prompt the user...
  10. kevc70

    Inside Bend Radius Not Changing

    I have a SW model (attached) that was given to me recently. The request is to change all the inside bend radii to .125". When I go to change the sheet metal bend radius, it seems to always default back to 0.045". I've tried insering custom parametrs to get the radius to change, but it seems...
  11. kevc70

    Flat pattern assistance

    Thank you Drafting Man for the model. It's pretty much what I needed. When looking at the model, why was the edge flange components in the feature tree suppressed?
  12. kevc70

    Flat pattern assistance

    I have a Solidworks part that I would like some advice on how to flatten in Solidworks. Part file is attached. I've tried using the convert to sheet metal command and the rip command but am unable to create the necessary gaps for bending. This is in Solidworks 2017. Am I better off drawing...
  13. kevc70

    Casting vs. Machining Drawing

    Thank you Kenat and dgallup for the info. Kenat is correct that my question is half non-CAD/half CAD and should have been partly asked on the Solidworks forum. I will look into getting the ASME standards for Castings as Kenat suggested. This was to primarily increase my understanding of what...
  14. kevc70

    Casting vs. Machining Drawing

    Thank you arunmrao and mintjulep for the insightful help. I have a good starting place from which to begin to understand the differences between casting and machining drawings.
  15. kevc70

    Casting vs. Machining Drawing

    Hello, I am looking for some information regardng the differences between casting drawings and machining drawings. Specfically, what kind of tolerances are associated with various casting processes versus a machining process? Also, if I have a part that needs a casting and machining drawing...
  16. kevc70

    Flat Spring thickness/Spring Rate

    I am looking to come up with a relationship between the thickness of a flat spring and the resultant spring rate. For this example, we will assume that width, length, and spring deflection are constant. The material properties of the flat spring is: UNS G10950 (Pretempered Spring Steel)...
  17. kevc70

    Fine/Coarse Adjustment of Plate

    would a fine pitch screw adjuster be the equivalent of what you are suggesting......similar to what is used on micrometers? these might do the trick for axial translation but not sure about rotational adjustment. thanks, Kevin
  18. kevc70

    Fine/Coarse Adjustment of Plate

    Actually this is for an optics system..........there are projection and focusing lenses within these plates and I would like to rotate and/or move these plates axially. I was looking at having a knob assembly threaded into both sides of the plate that will move the plate axially. the same...
  19. kevc70

    Fine/Coarse Adjustment of Plate

    Hello, I am looking for ways of moving a plate in an axial direction. There is a secondary plate that I want to move rotationally as well. There needs to be fine adjustment available so that a person can rotate the plate 1-2 degrees and lock in the location of the plate. The same holds true...
  20. kevc70

    Making mold splits in Solidworks

    Hello, I have an application where I need to make mold splits in Solidworks for some medical products. We'll be using MUD units with steel inserts, with 1/4" OD CAL rods through the mold base. There will be other hand-loaded inserts within the part(s) as well. What would be a good way of...

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