Introduction to Electrical Engineering

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........................................................7 Protective measures systems .............................................................................1............... International and European standardization....... Notice No...........4................... 29 5.......2 Measures for protection automatic disconnection supply.............................................................................................1 Classification electrical and electronic equipment with regard protection against electric shock the event insulation fault.......... VALID TECHNICAL RULES ..............................4 Supplementary equipotential bonding..........................2............................................................................................. 10 1............................................................. 37 5.................... The Act No........................................ 57 ...............2.........1............... 11 2.........2 Protection automatic disconnection supply.................2..................2..1........................................ 4 1.............. 34 5.......2.................................... 31 5............ 26 4................. 49 6. Resistance (impedance) the human body ..........2.. 43 5........................... General.........................1.........1...1..... 32 5...........................................................3 Protection use Class equipment equivalent insulation ....................2........................... Principles ....................................... CONSTRUCTION ELECTRICAL INSTALLATION AND EQUIPMENT ....3...................... Degrees protection provided enclosures (IP Code) ...................... 27 5. FUNDAMENTAL RULES FOR PROTECTION AGAINST ELECTRIC SHOCK ....................................................3........................ 50/1978 (qualification persons) ..2..2........4 Protection placing live parts out reach .............. 30 5... 7 1.................................................................. 51 6. 12 2......2.CONTENTS 4 CONTENTS PREFACE ..........1.2.......................3 Protection obstacles.......................... 36 5....... 43 5..................................................... 15 3...............................................1.....................................1 Requirements for characteristics protective devices............................4 Protection electrical separation.............3 Main equipotential bonding ........................ Conventional touch voltage limit..................2...........1 Protection insulation live parts...................6 Protective measures systems .......... 31 5......................................................... 3 CONTENTS . 42 5..................................................... 21 4........................ Rules for installation electrical equipment (apparatus and appliances).............................................1..2.................................................................2........1........... BASIC TERMS AND DEFINITIONS FOR ELECTRICAL SAFETY AND ELECTRICAL INSTALLATIONS...1........ 7 1................................2.... IEC Basic Standards ....................................3...... BASIC ELECTROTECHNICAL STANDARDS.............................2................................................................ 12 2.......5 Use protective measures............ 37 5...................................... Protection against direct contact.................... 13 2...................... Notice No.......................2...........2............................................................................................................. 21 4.....................................6 Additional protection.... 45 5........ 32 5................2 Examples designations with the Code....................................... Protection against both direct and indirect contact.2...........2....2...........................1 Elements the Code and their meaning ................................................................. Protection against indirect contact........................... 73/2010 (important electrical equipment) .................... 45 5....2.. 22/1997 (Technical Requirements for Products) ............................................................. 41 5.............. 17 4...... 47 5............................ 26 4........................................................................................1............................................................................. 33 5..... 31 5................................. 51 6.................................................. 47 5......1..................... Safety limits current passing through the human body...................................................................................... ............................5 Protective measures system ..........1........... 56 6......3...........1 Types system earthing.....2.................................... 53 6............................2 Protection barriers enclosures ................................. 26 4...................................... EFFECTS CURRENT PASSING THROUGH THE HUMAN BODY................................................

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