zoulzubazz
Member level 5
Hi,
I was trying to understand how an AC current clamp works. After some googling I understand that the current clamp loop itself is an transformer core and the AC mains cable is a transformer single turn winding. The magnetic-flux produced by the current in the mains cable is linked to the secondary winding via. the current clamp loop. Figure attached for reference.
Now all AC cables have a current return wire (live and neutral), so won't there be a return current flowing in the opposite direction? Wont the fluxes produced by the currents in opposite directions cancel each other out hence inducing no current in the current clamps winding? The picture attached shows current flowing in one direction only, is this wrong or am I crazy?
I was trying to understand how an AC current clamp works. After some googling I understand that the current clamp loop itself is an transformer core and the AC mains cable is a transformer single turn winding. The magnetic-flux produced by the current in the mains cable is linked to the secondary winding via. the current clamp loop. Figure attached for reference.
Now all AC cables have a current return wire (live and neutral), so won't there be a return current flowing in the opposite direction? Wont the fluxes produced by the currents in opposite directions cancel each other out hence inducing no current in the current clamps winding? The picture attached shows current flowing in one direction only, is this wrong or am I crazy?