Continuously Transposed Cable (CTC) is a type of winding wires weaved by certain number of strips of enameled rectangular wires in two ranks according to special technics and wrapped by special insulation material. It is mainly used for large-scale oil-immersed power transformers, reactors and large capacity dry type transformers
CTC can improve using rate of winding space, minimize volume and reduce cost, most of all, it decline the loss of circumfluence and eddy loss caused by leaking of magnetic field and also has advantages of improving machine strength of winding and saving winding time.
Pitch: distance between two consecutive transposed units of CTC. Pitch of CTC and depends on the Min diameter of winding and number of strips and calculation formula as below