ADWSystems
Member
I'm looking at two projects, both of which appear to require current transformers. The first is to detect the current draw of a AC motor, which is expected to be 10-15 amps. I would like to install a 20A AC panel meter, but the ones I have found all state they require a current transformer. How do I determine the specs for the current transformer?
The second is to determine whether a piece of equipment is on or off. When on and idle the equipment draws a low amount of current (~1A), when off it draws nothing, when running it may draw 5-10A AC. Really I'm looking to tell the difference between 0A and 1A and don't care if it is higher than 1A. The remainder of the circuit I have, I'm just looking to determine how to spec the current transformer for this system as well.
The second is to determine whether a piece of equipment is on or off. When on and idle the equipment draws a low amount of current (~1A), when off it draws nothing, when running it may draw 5-10A AC. Really I'm looking to tell the difference between 0A and 1A and don't care if it is higher than 1A. The remainder of the circuit I have, I'm just looking to determine how to spec the current transformer for this system as well.