CT for monitoring AC fan status

[anishpsla]

I want to calculate the current taken by an Axial fan - rated 230V AC - continuously and alarm if the fan fails or it overloaded. I am considering a CT based solution. But I can't find any design that suitable for my purpose.

 

[KlausST]

Hi,

what exactely is the problem?

It´s a simple current measurement with a CT.
Just select the burdon resistance and it will work.

Klaus

 

[anishpsla]

I tried with low value resistor. Because of very low current, the voltage across resistor is not suitable for measurement purpose. So I am considering CT. Can you help me to design a CT for the same ?

 

[KlausST]

Hi,

Without schematic, device names, values it's hard to help.

Please write all your specifications.

Klaus