Patent ID: 9696280
Date: 2017-07-04
CPC Classifications: G01N

Claim:
1. Device for inspecting aluminum cables with a steel core (ASCRs), installed in energized electrical energy lines, characterized by the fact that it encompasses a circuit for measuring based on ECT (Eddy Current Testing) in ASCR cables of energized electrical lines, consisting of: Generator (G) implemented using a sinusoidal oscillator operating through a Wien bridge with thermal stabilization or a similar technique; Ampere-meter (A) consisting of a rectification and integration circuit, or a similar technique, used to measure the current which is applied in an excitation solenoid; Voltmeter (V) consisting of a rectification and integration circuit, or a similar technique, used to measure the tension which comes from a detection solenoid (SD), after passing through a Hybrid Circuit and an Amplifier; the Amplifier (M) consisting of an electronic circuit used to amplify the signal from the detection solenoid, after passing through the Hybrid Circuit; the Hybrid Circuit (H) consisting of a passive circuit of four terminals, which combines the signal applied to the excitation solenoid with the signal received from the detection solenoid, with a view to increasing the sensitivity of the measurement; Thermometer (T) consisting of a temperature transducer and associated electronic circuit, intended to provide a measurement of the temperature of a conductor.