Invention Grant
- Patent Title: Device and method for inspecting aluminum cables with a steel core (aluminum conductor steel reinforced—ASCR) installed in energized electrical energy lines
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Application No.: US14796684Application Date: 2015-07-10
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Publication No.: US09696280B2Publication Date: 2017-07-04
- Inventor: Célio Fonseca Barbosa , Flávio Eduardo Nallin , Raphael Nunes de Souza
- Applicant: Light Serviços de Eletricidade S/A , Fundação CPQD—Centro de Pesquisa e Desenvolvimento em Telecomunicações
- Applicant Address: BR Rio de Janeiro BR Campinas
- Assignee: Light Serviços de Electricidade S/A,Fundação CPQD—Centro de Pesquisa e Desenvovlvimento em Telecomunicações
- Current Assignee: Light Serviços de Electricidade S/A,Fundação CPQD—Centro de Pesquisa e Desenvovlvimento em Telecomunicações
- Current Assignee Address: BR Rio de Janeiro BR Campinas
- Agency: Michael Best & Friedrich LLP
- Main IPC: G01N27/82
- IPC: G01N27/82 ; G01N27/90 ; G01N27/87
Abstract:
This invention concerns a device and a method for inspecting aluminum cables with a steel core (ASCRs), installed in energized electrical energy lines, which use the ECT (Eddy Current Testing) technique for evaluating the remaining thickness of the zinc layer which covers the steel wires of the cables inspected, where the readings of the tension of the detection solenoid and the current of the excitation solenoid are taken as the current of the conductor reaches zero, the electrical parameters of the conductor are corrected for the average temperature during the inspection and the signal from the detection solenoid is filtered through a hybrid circuit which is designed to increase the sensitivity of the measurement.
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