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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
    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
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