Introduction to Electrical Engineering

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............... 33 5..................................................................................... 17 4........2........... 27 5....................................2.... 53 6................. 37 5............................2........ 13 2........... The Act No................................................................1.......2............3.....6 Protective measures systems .......1 Requirements for characteristics protective devices...........1...........4 Protection electrical separation......... 45 5....2........... 31 5. 32 5........................................2................... 21 4..................2.2................. 37 5....... 4 1.1 Elements the Code and their meaning ................................................................................................... Notice No.....................1.......................................................................................... Safety limits current passing through the human body... 30 5................................................................................................2...... 34 5............. 26 4....................................................................................................2....................... Protection against both direct and indirect contact......................................2 Protection automatic disconnection supply...... Degrees protection provided enclosures (IP Code) ... CONSTRUCTION ELECTRICAL INSTALLATION AND EQUIPMENT ..........................................................................................2.......................................................2 Examples designations with the Code..................................2.. 36 5.....................1 Protection insulation live parts....1............2.. BASIC TERMS AND DEFINITIONS FOR ELECTRICAL SAFETY AND ELECTRICAL INSTALLATIONS............. Resistance (impedance) the human body ...................................................................4 Protection placing live parts out reach .... VALID TECHNICAL RULES ............................................................................. 49 6..................... 10 1........7 Protective measures systems .............................................................................................. 26 4. Conventional touch voltage limit...... 51 6.2..................................1...............2........................................................ BASIC ELECTROTECHNICAL STANDARDS..............................................................................1..... FUNDAMENTAL RULES FOR PROTECTION AGAINST ELECTRIC SHOCK .......... 51 6...............5 Use protective measures............................ 47 5.........2 Measures for protection automatic disconnection supply......1.......................................................................................6 Additional protection....................2.................................. 12 2...........4.................1... 29 5.......1.............................. 7 1.............2......................................................CONTENTS 4 CONTENTS PREFACE ......... 7 1...................2............. 26 4...........4 Supplementary equipotential bonding...........................................................................2.....2............................... 57 .............................2............. EFFECTS CURRENT PASSING THROUGH THE HUMAN BODY....................................................................... 22/1997 (Technical Requirements for Products) ........................................................................1 Types system earthing... Protection against direct contact.....................................................................................................1...............................1.......... 56 6....5 Protective measures system ............................................ IEC Basic Standards ... General... 31 5.........................................2.............. 21 4.......1 Classification electrical and electronic equipment with regard protection against electric shock the event insulation fault....... Principles .................... Notice No......... 15 3... Protection against indirect contact...... 42 5.......3....................... 32 5..... International and European standardization................................ Rules for installation electrical equipment (apparatus and appliances).................................................... 31 5.......................3 Protection obstacles........................1.....................3 Protection use Class equipment equivalent insulation .........1..........1...... 11 2......................................................... 45 5...........................................................2............3........ 12 2..... 41 5................2 Protection barriers enclosures .................. 50/1978 (qualification persons) ........ 43 5.............................3.......... 3 CONTENTS ........................................ .............................3 Main equipotential bonding ............................ 43 5. 47 5.................. 73/2010 (important electrical equipment) ............................

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