Scottf, Thanks for showing interest. I am working on a project on RCCB(Residual current circuit breaker). The RCCB uses a CT to detect the fault current(earth leakage current). there is an existing product which is using a strip wound toroidal core made of Nickel-iron alloy(Ni-86%)[the commertial name is Mu Metal). That CT is not working fine in giving enough voltage for primary current of 150mA. So I am trying to develop new CT which can meet my requirement. Meanwhile I thought of finding out the effect of increasing the no of secondary turns(windings) on the behaviour of CT, so I asked for equivalent model, so that I can predict some of the things. I have an equivalent model of CT, which suggests that number of secondary windings can be increased only up to an optimal value, beyond which, the power delivered by the CT to the load may come down. The size of the CT is: Outer Dia = 24.6mm, Inner Dia = 13.13mm and Height = 20.16mm. The dimensions of the New CT has to be in that order only.The number of secondary windings used in the existing CT is 600 and primary windings two.
Any info on, How the dimensions of the CT affect its behaviour? and other details regarding CT design will help me a lot. Any websites giving information on this?
Thanks in advance..