How could we measure 3 phase current industrially.
You're right. But what I think what Palindrome was referring to (or suggesting) was something like Fluke 430 series PQAs or something similar.
Does your PLC have spare control outputs? Perhaps you could have 3 CT's and a remote switch to "multiplex" the single analog input. You would have to write your program to syncronize the remote switch to follow whatever calculations/display you need to do.
oh! yes its a mistake sorry for that.
thanks for notifying.
bhargava
Wouldn't it be easier, less expensive, and more accurate to just buy an ammeter?
I think I am missing something here. If you are trying to control conveyor speed, why are you measuring the motor current?
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