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???
08/01/05 16:29
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 		 #98629 - Shunt Resistors
Responding to: ???'s previous message
In my past life as a test engineer, 200 to 400 Amp measuremetns where very common. I have used 100mV/200A shunts in the past and there is a company that makes them (don't remember the name just now, but will post when I can dig it up- or just try google on your own). They are available in many ranges (once bought 200mV/5000A ones long ago), so finding one in your range is possible. Of course, you'll probably need a DIFF AMP for amplifying the signal.

Also, the ones I used where "bolt-down", not PCB mountable, and about 4" in length.

The pricing as near as I can remember, for the 200A range, was around $50 to $100 USD

Hope this helps
Andy

List of 59 messages in thread
TopicAuthorDate
Op amp input, high voltage measurement            01/01/70 00:00      
   You need...            01/01/70 00:00      
   ISO106, and: BE CAREFUL!!            01/01/70 00:00      
      Very dangerous indeed!!!!!!            01/01/70 00:00      
         Oh dear...            01/01/70 00:00      
            thanks guys, & Mahmood, my condolences            01/01/70 00:00      
               a question for Kai....            01/01/70 00:00      
                  Answer            01/01/70 00:00      
                     Precision            01/01/70 00:00      
                        I'd say that the DC "current transformer            01/01/70 00:00      
                           Not            01/01/70 00:00      
         Condolences            01/01/70 00:00      
         Condolences            01/01/70 00:00      
         busbars            01/01/70 00:00      
            Thank you all            01/01/70 00:00      
   Isolation transformer            01/01/70 00:00      
      DC            01/01/70 00:00      
         maybe this is what a "DC current transfo            01/01/70 00:00      
   High Voltage Op Amps            01/01/70 00:00      
   Problem Change, change in supply values            01/01/70 00:00      
      INA117 is a good choice then            01/01/70 00:00      
         shunt resistor            01/01/70 00:00      
            Thick piece of wire            01/01/70 00:00      
               fine if you can calibrate.            01/01/70 00:00      
                  Yes            01/01/70 00:00      
               Piece of Wire.            01/01/70 00:00      
            Nevertheless...            01/01/70 00:00      
               Try these            01/01/70 00:00      
            Shunt Resistors            01/01/70 00:00      
   change in problem - different supply val            01/01/70 00:00      
   The application..........sorry its late            01/01/70 00:00      
      Not really            01/01/70 00:00      
      More questions...            01/01/70 00:00      
         Answers.......I hope this is clearer            01/01/70 00:00      
            I smell smoke            01/01/70 00:00      
               Toasty warm            01/01/70 00:00      
            Volt range            01/01/70 00:00      
               welder voltage            01/01/70 00:00      
                  Extremely informative!            01/01/70 00:00      
                     So...            01/01/70 00:00      
                        ahm confoosed            01/01/70 00:00      
                           millivolts            01/01/70 00:00      
      Simon says            01/01/70 00:00      
         So the aim is to test for shorted turns?            01/01/70 00:00      
            I doubt this will work with DC motors            01/01/70 00:00      
   Ring Counter theory and schematic            01/01/70 00:00      
      Spot on Charles            01/01/70 00:00      
   millivolts and growler test            01/01/70 00:00      
   Test readings            01/01/70 00:00      
      Shorted turn            01/01/70 00:00      
      Could you draw a scheme?            01/01/70 00:00      
         Windings            01/01/70 00:00      
            I'm a bloody amateur...            01/01/70 00:00      
      Where you are measuring            01/01/70 00:00      
         Big fault ?            01/01/70 00:00      
            shorted turn            01/01/70 00:00      
               Update            01/01/70 00:00      
   Latest update            01/01/70 00:00      
      Much much more details needed!            01/01/70 00:00      

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