Introduction to Electrical Engineering

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......................................... BASIC ELECTROTECHNICAL STANDARDS............................................6 Additional protection. 13 2. EFFECTS CURRENT PASSING THROUGH THE HUMAN BODY.................................................................................................................................................. 73/2010 (important electrical equipment) ..................1.................. 51 6.............1 Protection insulation live parts....................2 Examples designations with the Code...........1...................... 41 5........ BASIC TERMS AND DEFINITIONS FOR ELECTRICAL SAFETY AND ELECTRICAL INSTALLATIONS...... 10 1...............................................2........... 42 5.. 30 5.... Degrees protection provided enclosures (IP Code) .2.................4 Protection electrical separation..............2..............................................3 Protection obstacles........ 12 2........................ 4 1........................................................................................................... 45 5..................................................................................2 Protection barriers enclosures ........................ General.. CONSTRUCTION ELECTRICAL INSTALLATION AND EQUIPMENT ............ Resistance (impedance) the human body ....... 17 4............. Conventional touch voltage limit........................................................... 56 6........................................................ 57 ................................. 47 5...................................................................................................................................................... Notice No...............2...CONTENTS 4 CONTENTS PREFACE ............................. 31 5...............2...2.........2....................2..... 31 5.................................4 Supplementary equipotential bonding...........2.....1........................................................................ 51 6......3 Main equipotential bonding ....... Rules for installation electrical equipment (apparatus and appliances)...................1........5 Use protective measures........................................................ IEC Basic Standards ............... 22/1997 (Technical Requirements for Products) .7 Protective measures systems ....... 15 3.1............................1.........2.......... 26 4.................3 Protection use Class equipment equivalent insulation ... 26 4............................ 32 5...... VALID TECHNICAL RULES .............................................................. 43 5.............................................................................................. Safety limits current passing through the human body.................................................4 Protection placing live parts out reach ...2.............2 Measures for protection automatic disconnection supply......................... 36 5......................2...........1.......................... Protection against both direct and indirect contact.. Principles ..1 Requirements for characteristics protective devices. 37 5............................. 21 4.............3....1 Elements the Code and their meaning ....5 Protective measures system ........ 43 5.............. 26 4.............................. International and European standardization........................... Protection against indirect contact...............2..... 12 2............................ 34 5......2.................................. Protection against direct contact.................... 31 5..................4.............. 11 2.......................6 Protective measures systems ................................. Notice No..................................................2........................................................ 7 1..................................................... 3 CONTENTS .............................................................................. 27 5........................3............................................................................... FUNDAMENTAL RULES FOR PROTECTION AGAINST ELECTRIC SHOCK .....1 Types system earthing........ 50/1978 (qualification persons) ........................ 49 6.......................................................................... 53 6...1......................1.....2.......1.................2...2 Protection automatic disconnection supply..........................................................2............. 29 5................................................................3............. 7 1........................1....................... 33 5............................. 47 5..................................... 37 5.................................2..2..... The Act No......................1 Classification electrical and electronic equipment with regard protection against electric shock the event insulation fault............... 32 5..................1...........................3............... ...........................................................1................2..... 45 5.....2......1...............................2.................................................................. 21 4....

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