Title :
Design of a magneto-optic residual current device using aqueous ferrofluid as the sensing material
Author :
Martinez, Luis ; Rakowski, Ryszard ; Cecelja, Franjo
Author_Institution :
Dept. of Design & Syst. Eng., Brunel Univ., Uxbridge, UK
Abstract :
The paper presents a design for a Magneto-Optic Residual Current Device (MORCD) using ferrofluid as the sensing material. As the selection of suitable magneto-optic material was seen as the critical phase in the design, a novel Magneto-Optical performance Indicator is proposed and verified using known optical materials. It was experimentally established that the designed MORCD is sufficiently fast and capable of detecting residual current as low as 1.51 mA.
Keywords :
Faraday effect; electric current measurement; magnetic fluids; magneto-optical sensors; residual current devices; 1.51 mA; aqueous ferrofluid sensing material; figure of merit; high-sensitivity applications; magneto-optic residual current device; magneto-optical performance indicator; residual current measurement; three-block model; Coils; Costs; Design engineering; Faraday effect; Glass; Magnetic materials; Magnetooptic devices; Magnetooptic effects; Optical materials; Systems engineering and theory;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 2004. IMTC 04. Proceedings of the 21st IEEE
Print_ISBN :
0-7803-8248-X
DOI :
10.1109/IMTC.2004.1351184
