IQ 100 Series ((130/140/150) MeterProgramming the Meter Using the Front PanelUser and Installation Manual IM02601003E - July 2010 www.eaton.com 49Configuring CT SettingThe CT Setting has three parts: Ct-n (numerator), Ct-d (denominator), and Ct-S (scaling).1. Press the Enter button when Ct is in the A window.The Ct-n screen appears. You can either:• Change the value for the CT numerator.• Access one of the other CT screens by pressing the Enter button: press Enter once to access theCt-d screen, twice to access the Ct-S screen.NOTE: The Ct-d screen is preset to a 5 Amp or 1 Amp value at the factory and cannot be changed.a. To change the value for the CT numerator, from the Ct-n screen:• Use the Down button to select the number value for a digit.• Use the Right button to move to the next digit.b. To change the value for CT scaling, from the Ct-S screen:Use the Right button or the Down button to choose the scaling you want. The Ct-S setting can be1, 10, or 100.NOTE: If you are prompted to enter a password, refer to the instructions earlier in the chapter.2. When the new setting is entered, press the Menu button twice.3. The Store ALL YES screen appears. Press Enter to save the new CT setting.Example CT Settings:200/5 Amps: Set the Ct-n value for 200 and the Ct-S value for 1.800/5 Amps: Set the Ct-n value for 800 and the Ct-S value for 1.2,000/5 Amps: Set the Ct-n value for 2000 and the Ct-S value for 1.10,000/5 Amps: Set the Ct-n value for 1000 and the Ct-S value for 10.NOTES:• The value for Amps is a product of the Ct-n value and the Ct-S value.• Ct-n and Ct-S are dictated by primary current; Ct-d is secondary current.Press Enter Use buttons to set Ct-n value The Ct-d can’t be changed Use buttons to select scaling
