Current Transformer (CT) Replacement
Power monitoring equipment, both legacy and new installation, often requires an AC current input either 0-1A or 0-5A, the standard output from an iron cored current transformer (CT). Rogowski sensors are traditionally voltage out devices but can now be supplied as direct replacements for CT’s.
Installation of "retrospective" power and energy monitoring systems can be costly if the installation requires plant shutdown. Installation conditions are often less than perfect, and lack of space can mean bus-bars must be repositioned to accommodate large iron core CTs making shutdown unavoidable. This poses a particular problem when the nature of the business cannot accommodate electrical shutdown e.g. hospitals.