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induction

  1. General Electrical Discussion
    Hello.. I am curious how or why there is a higher amp draw on an induction motor during an under voltage condition. According to ohms law, isn't amperage directly proportional to voltage? I am just confused and can not seem to find the correct answer to help me understand how or why this works...
  2. PLCs, VFDs, Motors and Controls
    Hello everyone, I was wondering what are the ramafications of placing a disconnect switch in between a servo drive and servo motor? I was thinking that any sudden disconnection of the servo drive can cause induction issues/voltage spikes? Is there any issues with an isolated disconnect...
  3. General Electrical Discussion
    I am currently a student going into the industrial electrical field. I am working on a formula sheet that will help me, and a few other students. Could I have someone go over the following and let me know if there is anything else I am missing or anything that might be wrong? Here is a link to...
  4. Lighting Design
    http://grenentec.com/new/ I've come across a lot of doubts from customers saying that there's no way to replace a 1,000W MH light with 400W anything. I hope to clear that up. We've been replacing 1,000W with new 400W Induction fixtures since 2005 and always hear nothing but "looks awesome!"...
  5. Lighting Design
    I came across this in GE Lighting catalog, so I'll leave it here for reference: This questionable measures are not industry recognized and can not be used to meet specification criteria. So, if specifications call for "security luminaire shall have an efficacy of >75 lumens per watt", you can't...
  6. Lighting Design
    I know that induction sales people sing reduction in wattage and kWh usage, but conveniently omit the light output. I came across GE UltraMAX HID brochure, which claims to reduce lamp decay significantly, so that a lower wattage lamp can be used to meet the target mean lumen goal. They also...
  7. General Electrical Discussion
    Anyone know how i would create a wireless power supply, i have ideas in mind, done research, dont really know where to go with it, need help. Anyone wanna work on this with me?
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