Introduction to Electrical Engineering

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.......................... 17 4....................................................................1....... 12 2..1..................... 42 5.2........... 32 5...1.....7 Protective measures systems ..................... 32 5....5 Protective measures system .....................................6 Additional protection......................1 Classification electrical and electronic equipment with regard protection against electric shock the event insulation fault........................ EFFECTS CURRENT PASSING THROUGH THE HUMAN BODY... 49 6. Resistance (impedance) the human body ........................1........ 43 5.....................2................ BASIC ELECTROTECHNICAL STANDARDS................................. 43 5..... The Act No........................................................................................... 51 6.....................4 Supplementary equipotential bonding.............. 53 6..................................................... FUNDAMENTAL RULES FOR PROTECTION AGAINST ELECTRIC SHOCK .......................................................2.................... 3 CONTENTS ................ 56 6.............3..1 Requirements for characteristics protective devices........ 11 2....2.......... Conventional touch voltage limit........................................ General.....................................................1............................................1..................................... 31 5............................................3 Protection use Class equipment equivalent insulation .......2 Measures for protection automatic disconnection supply..................................2......1 Elements the Code and their meaning ........................................................... 31 5.....4......................................2......................................................................1................... IEC Basic Standards ...........................6 Protective measures systems .............................3 Protection obstacles................2.................. 41 5.....2.....2 Protection automatic disconnection supply.............................1..................... 45 5........ 73/2010 (important electrical equipment) ........................ Notice No...................... 50/1978 (qualification persons) ........................................................................................2.....2..................2............. 33 5................... 26 4..............................................................2.............................3.......................... 21 4....................... 15 3.................... 30 5...........................................................2.................................................................................2.............................2.........2 Protection barriers enclosures ............5 Use protective measures................... International and European standardization..... 51 6............CONTENTS 4 CONTENTS PREFACE ......................................................................4 Protection electrical separation...........2....... Notice No...... Protection against indirect contact..2.....................2 Examples designations with the Code................................................... BASIC TERMS AND DEFINITIONS FOR ELECTRICAL SAFETY AND ELECTRICAL INSTALLATIONS.....2........................................................................................... 27 5.... 22/1997 (Technical Requirements for Products) .............................1 Types system earthing.1 Protection insulation live parts...................... Safety limits current passing through the human body.............. 57 ....................................1........................................ 21 4...........2...................... ............ Rules for installation electrical equipment (apparatus and appliances)...........................2................................ 7 1............... 7 1......................... 26 4..... 29 5.................................................................................................................................3.................................4 Protection placing live parts out reach .............................2. CONSTRUCTION ELECTRICAL INSTALLATION AND EQUIPMENT ................3........... 4 1.......................1.....................................................3 Main equipotential bonding ........................................................ VALID TECHNICAL RULES ............ 12 2................................................... 45 5............1.......... Degrees protection provided enclosures (IP Code) ................1..... 13 2... 37 5.............................................2........... 31 5............. 26 4.................................................................. 37 5.............................1...... 36 5..................... 47 5....................... 10 1........ 47 5................ Principles ...........1........2. Protection against both direct and indirect contact....................................... 34 5........................................ Protection against direct contact...........................

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