PLC Pie Guy
Member
Hey all. Not a PLC question but electrical in nature. I have a 200 H.P. Frick compressor for refrigeration. This MCC bucket is missing a CT used to tell the compressor what percentage of FLA it is running at. I am curious what some of you would do if sizing the proper CT for this application. The 200 HP motor states that the FLA is 192Amps. (based on ugly's and 575 Volt AC) However, I know that this motor will see much higher current when starting. Possibly up to 300%. The LRC for this motor is 1160 amps. Would I size the CT based on the FLA or more for the starting current that would be more in the 500 to 600 range?
Thanks for all your input!
Thanks for all your input!