Introduction to Electrical Engineering

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Pro: ČEKO IMPORT a.s.
Vydal: České vysoké učení technické Praha Autor: Vladimír Kůla, Michal Kříž

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EFFECTS CURRENT PASSING THROUGH THE HUMAN BODY 21 4.1.) and that with alternating current (a.1.3 above Probability ventricular fibrillation above % 1) For duration current-flow below ms, the limit for the body current for line remains constant value 200 mA.1 4.c. EFFECTS CURRENT PASSING THROUGH THE HUMAN BODY 4.1.c.1 Probability ventricular fibrillation about % AC 4.2 Probability ventricular fibrillation about % AC 4. regards a. more dangerous than d. Figure 4.c.1.1 Time/current zones effect a. Zone designation Zone limits Physiological effects AC 0,5 mA a Usually reaction AC Usually harmful physiological effects AC Usually organic damage expected AC above Dangerous pathophysiological effects: cardiac arrest, breathing arrest and severe burns AC 4.c.4). currents (15 100 Hz) persons Description zones: . Principles There difference between the hazard associated with direct (d.c., the level danger varies depending the frequency: low and high frequencies are less dangerous than the technically applied frequencies and (see Figures 4.c.): a