Introduction to Electrical Engineering

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........6 Additional protection.. BASIC TERMS AND DEFINITIONS FOR ELECTRICAL SAFETY AND ELECTRICAL INSTALLATIONS........................... 17 4...................1......................2 Protection automatic disconnection supply................................................................. 21 4.............. 7 1.3.................................2..................1............. 33 5............................. 50/1978 (qualification persons) ................................................ 36 5............. ................................1 Requirements for characteristics protective devices....1 Protection insulation live parts..................4......................... 32 5.......... 4 1.......................................................................1 Elements the Code and their meaning ..........................1 Classification electrical and electronic equipment with regard protection against electric shock the event insulation fault...........................3 Main equipotential bonding ...3..... CONSTRUCTION ELECTRICAL INSTALLATION AND EQUIPMENT ...................... 15 3. 57 ............................................................... BASIC ELECTROTECHNICAL STANDARDS.......2........................................ 47 5...... 45 5........................................................ The Act No.............................................. 37 5...2.4 Supplementary equipotential bonding.2...................2.......................2.......................................2.....................5 Protective measures system .......... 7 1......1....................................................................... 31 5................................... 45 5........... 37 5............................................... 26 4.. 22/1997 (Technical Requirements for Products) .........1.............................. 10 1..........................2 Protection barriers enclosures ......................................2................................. 32 5........................................ 12 2... 29 5................................................................2......................... 43 5............................................................................ 31 5.................. 41 5.5 Use protective measures................................................................. Notice No.................................3..............................1......................... General................4 Protection placing live parts out reach .... 53 6..................... 26 4.............1........................................................................... 51 6..... Conventional touch voltage limit....................................2................. 42 5.........3.....3 Protection use Class equipment equivalent insulation ................... VALID TECHNICAL RULES ...........................2...... FUNDAMENTAL RULES FOR PROTECTION AGAINST ELECTRIC SHOCK ........................................................... EFFECTS CURRENT PASSING THROUGH THE HUMAN BODY...............................1....... 34 5..................................2............... 31 5.... 13 2............................. Protection against both direct and indirect contact............2...........................................3 Protection obstacles..CONTENTS 4 CONTENTS PREFACE ......................................................... 30 5..........................1..............2.......... Degrees protection provided enclosures (IP Code) ......6 Protective measures systems ............................2........................................................... 27 5..................................................2...................2.......1................ 47 5.........................2 Examples designations with the Code..................................7 Protective measures systems ........ 56 6........ 49 6....................... 43 5......................................................................................... Notice No.2................. Resistance (impedance) the human body .......2........................................................................... 11 2.................. 3 CONTENTS .....4 Protection electrical separation.......................1..... Rules for installation electrical equipment (apparatus and appliances)..........................................2..1..............1........1............... Safety limits current passing through the human body................................ 21 4........................................................... 26 4............2 Measures for protection automatic disconnection supply....................................................................2............................................... Principles ........................2................... Protection against indirect contact.............................................1. IEC Basic Standards ............... 51 6........................................... Protection against direct contact. International and European standardization...........................1 Types system earthing.......2.................................................. 73/2010 (important electrical equipment) ...... 12 2.......

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