Introduction to Electrical Engineering

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.............2..................................................2 Examples designations with the Code....................... FUNDAMENTAL RULES FOR PROTECTION AGAINST ELECTRIC SHOCK ................... ................................1................. 47 5................. 73/2010 (important electrical equipment) ....... 15 3.................. Conventional touch voltage limit.....................................2................... 31 5.............. IEC Basic Standards .............. 45 5..............................1..................................... 27 5..................... 12 2............................................ 30 5.................................... 32 5...............................................1... 4 1................... Notice No....... 32 5........... 3 CONTENTS .......2...................................... 11 2......................3..... Resistance (impedance) the human body .................................................... 43 5.......2.................2..........................................2................ 41 5........................................ 51 6.........................................2......................................................6 Additional protection...................... 33 5......................2...... 37 5..................................................... 36 5..................CONTENTS 4 CONTENTS PREFACE ..................3 Protection use Class equipment equivalent insulation ......................................... 31 5............ General...................................................................................................................................................................................3.... 56 6......................................................... 51 6........2..4...............................................5 Use protective measures.....2.........................................2................... 13 2....... 7 1........ 37 5................5 Protective measures system .....................................................1....... Degrees protection provided enclosures (IP Code) .... 49 6.......................................................1............1 Classification electrical and electronic equipment with regard protection against electric shock the event insulation fault....................................................1 Types system earthing.................................2.....1.1.........................4 Protection placing live parts out reach .............. 12 2. 45 5.................... 57 . 26 4............................................ Protection against indirect contact............2............................................................ BASIC TERMS AND DEFINITIONS FOR ELECTRICAL SAFETY AND ELECTRICAL INSTALLATIONS..................................................................1....................................................... 50/1978 (qualification persons) ..3 Main equipotential bonding ...................... VALID TECHNICAL RULES ............................ 22/1997 (Technical Requirements for Products) ...................1..........7 Protective measures systems .................2.. International and European standardization........... 34 5......... The Act No....... Safety limits current passing through the human body...1........................1.....2 Protection barriers enclosures ............................1........................................2..2.. 29 5.................................... 26 4..3 Protection obstacles................3.....3.............................. 10 1................................ Principles ...............2..................................................... 42 5..................1 Elements the Code and their meaning ............2..............2 Measures for protection automatic disconnection supply.................. CONSTRUCTION ELECTRICAL INSTALLATION AND EQUIPMENT ............1 Protection insulation live parts.............................................2............................................................... Rules for installation electrical equipment (apparatus and appliances)...........................................4 Protection electrical separation..................1.............. Protection against direct contact..................... 43 5.........4 Supplementary equipotential bonding........ Protection against both direct and indirect contact............... 21 4...................................................... 31 5. 47 5............................................. 17 4..........2........................................................................2 Protection automatic disconnection supply...........................................1..... 21 4...........2......... 7 1...................................................................................2.........2........ 53 6.......6 Protective measures systems .........................................1 Requirements for characteristics protective devices.................................................................. EFFECTS CURRENT PASSING THROUGH THE HUMAN BODY...................................................... 26 4.... BASIC ELECTROTECHNICAL STANDARDS.... Notice No.....

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