It provides total electrical isolation between communicating devices. It provides total electrical isolation between communicating devices. GPR that can exist between two connected IEDs will not cause current to flow between the different potentials. Fiber-optic cable will not conduct lightning induced charges so your expensive communications and electrical equipment remains undamaged. With Fiber-Optic Cable, the distance that you can transmit a signal can be extended beyond the limitations placed on twisted copper pair wire circuitry by standards.
Applications are many.
Fiber-Optic Cable is now the standard solution wherever a harsh environment could corrupt an electrical signal if it were carried by copper wire, or where the equipment could be exposed to lightning or differences in ground potential, or where the distance that needs to be spanned exceeds the limits of copper wire. Networks that extend outside to another building such as those in Waste Water Treatment Plants, Refineries, Mines and Quarries. Power monitoring devices in switchgear, power panels and substations.