Introduction to Electrical Engineering

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

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