Introduction to Electrical Engineering

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

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