LETHALITY OF ELECTROMAGNETIC FIELD IN ELECTRIC POWER DISTRIBUTION NETWORKS: CAPACITIVE EFFECT

Paul I. Audu

Abstract: Several cases of electrocution incidences experienced on active duty by staff of the Power Industry and Vandals of electrical facilities have resulted from Electromagnetic Field Induction. These usually emanate from ignorance or careless application of basic rules of electricity at new installations, maintenance and system expansions or network integration. Most of these situations result from undue neglect of statutory clearances and approach distance rules, improper network evaluation as well as blatant disregard to the subject of electrical safety. We will be looking at one unfortunate incident of a man electrocuted in Kaduna, and technically evaluating the attendant safety issues involved. Issues involving electromagnetic field effect and its consequences on this case-study is investigated from three premises using electrostatic techniques relating to this phenomenon, based on data of measured values collated from typical sites. The first premise is the consideration of the human anatomy response in the presence of electric and magnetic fields as it affects. The second consideration appraises the interaction of the human body impedances with electromagnetic field on direct contact (with or without Personal Protective Equipment – PPE) as well as impact of electric and magnetic field without direct contacts in the process of electrocution. Conclusions are drawn from charts, tables and excel calculation sheets derived from relevant engineering relationships

Keywords: Electric Fields, Magnetic Fields, Statutory Clearances, Approach Distance, Electrostatic Induction, Electromagnetic Induction, Induced Voltage, Capacitive Networks and Dielectric Material.

DOI: https://doi.org/10.15623/ijret.2018.0708003