OK, I'll tell you what I would do. This would deviate a little from what #12 suggest.
At work I have several 480 VAC 1,000 amp service lines I like to monitor. Here is what I do. I use a 1200:5 current transformer on each bus. That means when the single line running through the CT (the primary) is at 1,200 amps the CT secondary output is at 5 amps. I take that 5 amp secondary and loop it 4X (four times) through one of these units. So what I now have is 0 to 1,200 amps = either 4 to 20 mA or 0 to 5 volts. Actually in my case I use the 4 to 20 mA and run it through a 500Ω precision resistor so my 0 to 1,200 amps is no0w 2 to 10 volts to use as I please. The reason I loop it 4X is simply to get the second transducer up to full scale of range (5 X 4 = 20).
I also use a data logger to monitor my bus current during certain testing.
Now I have mentioned just as #12 CR Magnetics but a 1200:5 can be had just about anywhere, the same is true of the smaller 20 amp transducer that outputs 0 to 5 volts or 4 to 20 mA. These type units are quite common.
Ron
At work I have several 480 VAC 1,000 amp service lines I like to monitor. Here is what I do. I use a 1200:5 current transformer on each bus. That means when the single line running through the CT (the primary) is at 1,200 amps the CT secondary output is at 5 amps. I take that 5 amp secondary and loop it 4X (four times) through one of these units. So what I now have is 0 to 1,200 amps = either 4 to 20 mA or 0 to 5 volts. Actually in my case I use the 4 to 20 mA and run it through a 500Ω precision resistor so my 0 to 1,200 amps is no0w 2 to 10 volts to use as I please. The reason I loop it 4X is simply to get the second transducer up to full scale of range (5 X 4 = 20).
I also use a data logger to monitor my bus current during certain testing.
Now I have mentioned just as #12 CR Magnetics but a 1200:5 can be had just about anywhere, the same is true of the smaller 20 amp transducer that outputs 0 to 5 volts or 4 to 20 mA. These type units are quite common.
Ron