Optical Current Transformers (OCT)

Our screen current transformers use optical fiber and are passive systems, which do not require power. Once the light reaches our transformers, they are sensitive to the magnetic field generated by the cable current changing the polarization of the light that reaches our interrogator. These transformers are factory tested and calibrated. 

They use simple single-mode fiber communications.  The installation is simple and can be done by any fiber optic communications local contractor.