This will limit the frequency range of the CTCT Model + LmAll Rights Reserved Copyright (C) Bee Technologies Corporation 20115Measured and Added to the modelĬT Model Frequency RangeLm and Cp limit the frequency range of the current transformer. Lm (CT equivalent inductive magnetization), Rp, and Cp can be measured and added to the model. Modeling Concept: Use the secondary side of a ‘voltage’ transformer model as a the current sensor then transform by 1/n to another side.The current transformer model (primitive)CT Model (Primitive)All Rights Reserved Copyright (C) Bee Technologies Corporation 20112IsensedIsensed/n(1 : n)++VOUTVOUT/nĮxample: Vpower=10kV, Rload=10, Rburden=10, and n=1000The current transformer model and its application (Isensed=1kA, VOUT=10V)CT Model and ApplicationAll Rights Reserved Copyright (C) Bee Technologies Corporation 20113Isensed=1kA(1 : 1000)Isensed/n=1AVOUT=10V++VOUT/n=10mVĬT Model and ApplicationThe current transformer model and its application (Isensed=1kA, VOUT=10V)All Rights Reserved Copyright (C) Bee Technologies Corporation 20114Isensed=1kA(peak)VOUT/n=10mV(peak)Isensed/n=1A(peak)VOUT=10V(peak) Summery : current transformer A current transformer (CT) usually used for measurement of currents (especially large values)when large values of current are expected, a CT reduces current proportional to the current in the circuit (primary current).Modeling Concept:Use the secondary side of a ‘voltage’ transformer model as a the current sensor then transform by 1/n to another side.All Rights Reserved Copyright (C) Bee Technologies Corporation 201111 : nIsensedIsensed/n Materials: Simulated Parts (Multisim): A 30/3 Vrms center-tapped transformer Two diodes 1N4001 Two 2.