Title :
Diagnosis of electric cable insulation by high Tc SQUID
Author :
Tanaka, S. ; Inadomi, K.
Author_Institution :
Ecological Eng., Toyohashi Univ. of Technol., Japan
fDate :
6/1/1999 12:00:00 AM
Abstract :
We have developed the wide band electronics for SQUID and measured short pulse currents simulating a signal in a degraded power electric cable. The SQUID driving electronics had a bandwidth as wide as 1.4 MHz and it could successfully detect currents of 3 /spl mu/A with the width of 120 nsec. These results suggested that SQUIDs can be applied to the partial discharge measurement of power cables.
Keywords :
SQUIDs; electric current measurement; high-temperature superconductors; insulation testing; partial discharge measurement; power cable insulation; power cable testing; 1.4 MHz; 120 ns; 3 muA; SQUID; electric power cable; high T/sub c/ superconductor; insulation diagnosis; partial discharge measurement; pulse current measurement; wideband electronics; Cable insulation; Current measurement; Degradation; Electric variables measurement; Partial discharge measurement; Power cables; Power measurement; Pulse measurements; SQUIDs; Wideband;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
