CT Secondary Earthing 1

[mikelangel78]

Hello,

I need your help regarding with this issue. I'm not an electrical enginnering, but currently i working in this fieid area.

My doubt is: from what i have been reading, the S2 of a Current Transformer should be ground. In that case the current that flows in the secondary will flow to earth in that point (S2)and the circuit will never be closed, because the current never return to S1. If its true, there is a permanent leakedge to earth. How could this work? Peharps this is a huge nonsense, but i have this doubt.

Can somebody help me trying to understand this?

Thanks in advanced
Mike

 

[mikelangel78]

Thank you Scottf for your kindness and patiente. And what could cause the "float up" at the seconday winding potential? Could you give pratical or possible examples? Phearps and induction current that appears in one of the seconday cables cause that "float up".

 

[davidbeach]

The secondary is the other "plate" of a capacitor. The primary is the first "plate". Without the ground the secondary "plate" approaches the voltage of the primary "plate".