Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Current Sensing Transformer

  1. Apr 24, 2007 #1
    I am using a Triad Magnetics CST206-3T Current Sensing Tranformer. How does it work? I need to find a resistor to measure the current, while getting the highest possible gain, and without losing performance at high frequencies.

    My question is how does the CT measure current?
  2. jcsd
  3. Apr 24, 2007 #2


    User Avatar
    Science Advisor
    Gold Member

    First of all, be very careful with current transformers. When the secondary winding is left open VERY high voltages can develop between the leads. Don't you have a data sheet for it? Usually current transformers work just like voltage transformers concerning turns ratio. A fixed resistor placed across the secondary will develop a voltage that is representative of the primary current. What size resistor to use should be determined from a data sheet.
  4. Apr 24, 2007 #3
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Threads - Current Sensing Transformer Date
Distorted Current sensing Aug 22, 2011
Current sensing/measuring circuit Apr 11, 2011
Current sensing and standard resistor Mar 21, 2011
Sensing current/voltage in a semi-conductive material Aug 6, 2010
Current sensing switch Jan 24, 2010