Abstract: “Most of the advanced communication systems based on fibre optics have been developed during last 3 to 4 decades. In addition to telecommunication applications, the optical fibres are also used in the field of transmission of data regarding various electric as well as non-electric parameters in different operating systems ranging from measurement of current, voltage, temperature, pressure and pH values of the fluid used in electrical power apparatus to measurement of strain in civil engineering structures. Insulation condition monitoring of high voltage electric power equipments is of significant importance in maintaining a safe and reliable electricity supply system. New developments in the area of the signal measuring and its conditioning, data processing and analyzing as well as environmental aspects make a more precise and detailed condition evaluation possible. By detecting faults in power apparatus at an early stage, it is possible to locate and repair defects before they cause an”

Keywords: Advance Communication System; Fibre Optic Sensor; High Voltage; Condition Monitoring; Partial Discharge