The Pros of Using a Split Core Current Transformer

Power measurement systems require transformers to work properly. There are two main types of transformers for this use: solid core and split core. These devices vary in terms of performance and cost, the latter being one the major reasons some users choose solid core over split core transformers. However, split core transformers have many advantages over solid core.

For one thing, split core transformers can be assembled around a buss bar without having to disconnect the buss bar, making the transformers easier to install and take apart whenever needed. In addition, split cores can be directly installed in an electrical control panel, without the complex wiring needed for a solid core transformer. Moreover, split core transformers can be installed in a ‘live’ system without disturbing the system. This saves a lot of time in installation, and avoids power interruptions which can be very costly in industrial and manufacturing applications.

Split core transformers are less accurate than solid cores, but a high level of accuracy can be obtained by using certain core materials. In particular, the use of silicon steel or nickel alloy core materials allow for less core loss at higher frequencies (i.e. around 10 kilohertz), thus resulting in more accurate readings.