Patent ID: 8055459

Claim:
An instrument ( 1 ) for measuring partial electrical discharges in an electrical system, comprising: an input stage ( 2 ) set up to receive an analogue signal ( 3 ) representing one or more pulses of partial discharges to be measured and to generate at its output a digital representation of the entire wave form of said one or more pulses, an output stage ( 4 ) set up to transfer data in digital shape at the output from the instrument, data processing means ( 5 ) operatively associated both with the input stage ( 2 ) and with the output stage ( 4 ) to receive said digital representation of the entire wave form of said one or more pulses, extract the value of predetermined parameters relating to the wave form of said one or more pulses and transfer to the output stage ( 4 ) a processed digital signal comprising said values, the processing means ( 5 ) operating substantially in real time, characterized in that said predetermined parameters comprise amplitude of the discharge pulses, phase parameters, equivalent duration (T) and equivalent bandwidth (W).