Introduction to Electrical Engineering

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..............3 Protection use Class equipment equivalent insulation ............2 Examples designations with the Code..................1...... 26 4......................... 31 5.....................3.................................................................................1......................2..2................................... IEC Basic Standards ............... Conventional touch voltage limit................................. 7 1....................2.................................... 34 5......................4 Supplementary equipotential bonding...................... 21 4.. 45 5........2............1 Requirements for characteristics protective devices... 43 5..................................... 3 CONTENTS .................2.........................................................2...... Notice No......1............... 17 4.....................7 Protective measures systems .... Rules for installation electrical equipment (apparatus and appliances)....................3...................... 56 6.......... 50/1978 (qualification persons) .......1............ 10 1..........................2... 45 5... 53 6.............2 Measures for protection automatic disconnection supply......... 21 4.... 22/1997 (Technical Requirements for Products) ........................................................2.............................. Safety limits current passing through the human body............2...6 Additional protection...................5 Protective measures system ................2..................................................................6 Protective measures systems ....... 11 2.............................................................................1................................................................ 37 5................ General..........1 Classification electrical and electronic equipment with regard protection against electric shock the event insulation fault...............................................3.................... 32 5........... 49 6.............1... FUNDAMENTAL RULES FOR PROTECTION AGAINST ELECTRIC SHOCK ... 51 6.............2 Protection automatic disconnection supply.......................... International and European standardization...............................2.................................................................. 7 1..3 Main equipotential bonding ................................................................................ 31 5............................. Degrees protection provided enclosures (IP Code) ............................................ 12 2........................ 26 4.....................................4........... 57 ............2............................................ VALID TECHNICAL RULES ......2....................................... 73/2010 (important electrical equipment) ......1................... 15 3.................................................................. Protection against direct contact...............4 Protection placing live parts out reach ....1.............1................................................5 Use protective measures.. 26 4.............. Resistance (impedance) the human body .. 33 5.....3.........................2..2..2..............1............................................. Protection against both direct and indirect contact.............................. 12 2.1 Protection insulation live parts...... 30 5... EFFECTS CURRENT PASSING THROUGH THE HUMAN BODY............................ Notice No................................................2............................................................. 42 5........4 Protection electrical separation...... The Act No........................................................................... 29 5......................................... 13 2.. 51 6.................................................................................3 Protection obstacles.......................................... 47 5..................................1.......................................... CONSTRUCTION ELECTRICAL INSTALLATION AND EQUIPMENT .............................................. 4 1....1....2.............................. 27 5................................. 32 5..2.................. Protection against indirect contact................................................................. 47 5............................................. 43 5............... 41 5....................2....................... ... BASIC ELECTROTECHNICAL STANDARDS........... Principles ........................................................... 37 5........2.....................................................1.........................................................CONTENTS 4 CONTENTS PREFACE ......................................1 Types system earthing................................................................. 36 5.............................................2.......................................1...................................... 31 5...2 Protection barriers enclosures .............................2....................... BASIC TERMS AND DEFINITIONS FOR ELECTRICAL SAFETY AND ELECTRICAL INSTALLATIONS.......1 Elements the Code and their meaning ...............................

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