IQ 100 Series (130/140/150) MeterProgramming the IQ 100 Series Using Software58 User and Installation Manual IM02601003E-July 2010 www.eaton.comConfiguring SettingsThe following sections contain detailed instructions for configuring the Device Profile settings. All of thesettings are reached from tabs at the top of the Device Profile screen.Configuring ScalingUse this setting to configure Current Transformer and Potential Transformer ratios and to select theWiring (System Hookup).Functional Overview of CT and PT Ratios:Current and Potential Transformers are used mainly for the following reasons:To insulate, and as a result isolate, the meter from high-voltage circuits•To change the primary voltage and current to standard values and sizes that the meter can measure.•The CT and PT transformers deliver fractions of the primary voltage and current to the meter. Withproperly set ratios and multipliers, the readings of the meter can be used to determine the energy,voltage, current, or power of the system.This setting is the first screen displayed when you open the IQ 100 Series Device Profile. If you havebeen on another screen, click the Scaling tab to re-display this screen. The screen fields and acceptableentries are as follows:CT RatiosCT Numerator (Primary): 1 - 9999CT Denominator (Secondary): 5 or 1 AmpNOTE: This field is display only.CT Multiplier (Scaling): 1, 10 or 100Current Full Scale: Display only.PT RatiosPT Numerator (Primary): 1 - 9999PT Denominator (Secondary): 40 - 600PT Multiplier (Scaling): 1, 10, 100, or 1000Voltage Full Scale: Display only.System Wiring3 Element Wye; 2.5 Element Wye; 2 CT DeltaExample Settings:For a CT of 2000/5A, set the following CT Ratios in the entry fields:CT Numerator (Primary) 2000CT Denominator (Secondary) 5CT Multiplier 1The Current Full Scale field will read 2000.NOTE: You can obtain the same Current Full Scale by entering a CT Numerator of 200 and a CTMultiplier of 10.
