Introduction to Electrical Engineering

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.......2.......................................................2........... 45 5.........................................6 Protective measures systems ..........................1................... 27 5................4 Protection placing live parts out reach ...................... FUNDAMENTAL RULES FOR PROTECTION AGAINST ELECTRIC SHOCK ........................2........................................ 26 4.....................3.... 21 4.....3..............1..................... 37 5..2..............2.................................................................................... 32 5............................ Notice No..........7 Protective measures systems ..1 Types system earthing.......................1 Requirements for characteristics protective devices.................................4 Protection electrical separation...3.. Resistance (impedance) the human body ................................................................................................................... ................1...........................................................2................2 Protection barriers enclosures .........1................ 32 5...................... 43 5...... Notice No.......... 12 2.3 Protection use Class equipment equivalent insulation ........................................................... 31 5........................... The Act No........... 33 5........ 51 6.5 Use protective measures...1 Classification electrical and electronic equipment with regard protection against electric shock the event insulation fault..2.............................. 31 5..............................2................................ 37 5........................................ BASIC ELECTROTECHNICAL STANDARDS................ Principles ................................. 57 ..........................1.....1.............................................................. Safety limits current passing through the human body... Protection against direct contact.................2 Examples designations with the Code..................2......................................2.........................3..........................................................2.......... 49 6............................... EFFECTS CURRENT PASSING THROUGH THE HUMAN BODY.................................... 50/1978 (qualification persons) .......2.....................2..... 29 5............................1....... Conventional touch voltage limit.. 12 2......... 42 5........................................................................................................................ General.................... 53 6.......................................... VALID TECHNICAL RULES .........1.....1.... 45 5...............................1............................. 11 2....... 43 5.....................1.2....................................2..........1................ 41 5.....................4 Supplementary equipotential bonding................................................................ 31 5.. 26 4..........................................................1.....CONTENTS 4 CONTENTS PREFACE .................................... 17 4........................2.............. 21 4.... 47 5................................................ 7 1........1 Protection insulation live parts........... 47 5...................................................... BASIC TERMS AND DEFINITIONS FOR ELECTRICAL SAFETY AND ELECTRICAL INSTALLATIONS...............................3 Main equipotential bonding ...........1 Elements the Code and their meaning .................................................................... Rules for installation electrical equipment (apparatus and appliances)...............2 Protection automatic disconnection supply........... 36 5.................... 3 CONTENTS .............................................................................6 Additional protection.................2.......................... 56 6...................2......... IEC Basic Standards ...................2.......................................................................... 30 5.........................2.............. Protection against indirect contact.......1...................................3 Protection obstacles....................................................................................... 34 5.......................................... Degrees protection provided enclosures (IP Code) ......................................... 22/1997 (Technical Requirements for Products) ............... 15 3....................... 4 1. 13 2. International and European standardization........................................................................... 73/2010 (important electrical equipment) ...........................2 Measures for protection automatic disconnection supply. 26 4.. 51 6........ CONSTRUCTION ELECTRICAL INSTALLATION AND EQUIPMENT ...............................................5 Protective measures system ..........2........................... 7 1.................................... Protection against both direct and indirect contact...2........................... 10 1.....4................................................2.........................................

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