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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FUNDAMENTAL RULES FOR PROTECTION AGAINST ELECTRIC SHOCK 32 or- when intermediate barrier providing degree protection least prevents contact with live parts, such berier being removable only the use key tool. Figure 5.4 Protection placing live parts out reach With this measure, simultaneously accessible parts varying potentials (voltages and earth potential) shall not within arms reach.2.2 Protection placing live parts out reach zones arm´s reach under different conditions .1.1. This distance shall increased places where bulky long conductive objects are normally handled.3 Protection obstacles Obstacles may include handrails, mesh-screens, railings and protective frames. Parts are not regarded being simultaneously accessible they are more than 2,50 apart.1. 5.1. Minimal distances live parts from the stand point according different standards are shown the Figure 5. 5. Obstacles may removed without using key tool but shall secured prevent unintentional removal