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  • Users: podo
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  1. podo

    Motor terminations

    We are required by regulation (MSHA - Mining Safety and Health Admin.) to use shielded cables to connect to high voltage motors. The cable is an SHD-G-GC construction, and the voltage is 4160V, 3 phase. The G-GC stands for Ground with a Ground Check conductor. The supply system is resistance...
  2. podo

    Time for start-up between two motors

    Redox, We have used fluid couplers with extended times before they start to transfer torque to the load. They are called double-delay couplers. They are made by all of the fluid coupler people. They will allow for a short delay between motor start-ups. Also, 3 seconds seems like a very short...
  3. podo

    Time for start-up between two motors

    That would depend on the type of motor starter and mechanical coupler that are being used. On the mechanical side, if fluid filled couplers are used, the motors start under no load, and 0.5 second should be fine. On the electrical side, if some form of reduced voltage starters are used...
  4. podo

    Four Link Suspension - Drag car

    To red300zx99x; You described what I think I need - a good simulation package. Do you know of any, and how do I obtain one? Thanx, podo
  5. podo

    Four Link Suspension - Drag car

    Theoretically, how would I calculate the optimum instant center location for the four link suspension used in a drag race car? Car specifics: NHRA E/altered - competition eliminator Door car - tube frame Car weight - 2340 pounds Rear weight - 1190 pounds (51 percent) Wheel base - 105 inches...
  6. podo

    Motor lead splices

    I know that we have all tape-spliced motor leads in motor junction boxes, but I have never seen any written procedures for this process, i.e. what type of tape(s) to use, how many layers, etc. These would be 50 - 200 HP AC motors, 1000 volt or 4000 volt. The terminal boxes are rather small and...
  7. podo

    Detecting broken rotor bars

    Is there a way to detect broken rotor bars by looking at the motor speed and/or current? What should I look for? Thanks, Podo

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