1. intro

./sct013-1.jpg ./sct013-2.jpg

rogowski coil


The Current Transformer produces a current proportional to the current flowing though it’s magnetic circuit.

The proportion of the current in the cable that you get in the transformer is equal to the turns ratio.

For example : Current = 30A (rms) , Turns Ratio = 1800 ⇒ Transformer Current = 30/1800 = 16.67mA (rms)

The SCT013-030 includes a 62 Ohm resistor in parallel with the transformer, making it a Voltage Output type.

At 30A in the example above, that corresponds to an output Voltage of 16.67mA x 62 Ohms = 1V (rms)

2. references