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Electric Field Prediction for a Human Body-Electric Machine System

Ioannides M. G., Papadopoulos P. J., Dimitropoulou E.

International Journal of Occupational Safety and Ergonomics

2004

Vol. 10, No. 1

87--100

A system consisting of an electric machine and a human body is studied and the resulting electric field is predicted. A 3-phase induction machine operating at full load is modeled considering its geometry, windings, and materials. A human model is also constructed approximating its geometry and the electric properties of tissues. Using the finite element technique the electric field distribution in the human body is determined for a distance of 1 and 5 m from the machine and its effects are studied. Particularly, electric field potential variations are determined at specific points inside the human body and for these points the electric field intensity is computed and compared to the limit values for exposure according to international standards.

Electric Accidents in the Production, Transmission, and Distribution of Electric Energy: A Review of the Literature

Batra P. E., Ioannides M. G.

International Journal of Occupational Safety and Ergonomics

2001

Vol. 7, No. 3

285–307

Many work related electric accidents occurred in electric energy industries and they were very often fatal. The situation of electric accidents in electric companies worldwide is investigated by reviewing the scientific literature, to offer perspectives on the types and kinds of statistics available, the factors regarded as influencing their occurrence, their consequences, and also methodological shortcomings. Worldwide, reliable comparable data exist and indicate a downward trend in fatal electric accidents. Difficulties were encountered in compiling international statistics because of differences in how accident data were defined and recorded, variations in mandatory practices, lack of suitable data and indices, accident insurance systems, and lack of correlation between technical, financial, and medical aspects.