Introduction to Electrical Engineering

| Kategorie: Kniha  | Tento dokument chci!

Strana 4 z 112

Zobrazení indexu knihy

Jak získat tento dokument?

Poznámky redaktora

...3........................5....................................... Identification conductors and terminals........................5 Examples safety signs........4............................................1 Erection...............................................................................................12 Conditions installation...........5 Characteristics...3.....4................................................................................................. Selection and erection electrical equipment according external influences ....................................7 Protection against overcurrent ........................... Erection and initial verification electrical installations..........................................................................................................3......4.....3 Colours actuators.................................................................................................58 6.................................4........4...............4.........................58 6..........................................................................................................................1....................................3...............4 Safety signs ....................................................72 7.... Safety information electrical equipment and devices...........................79 8..................................65 6..........................65 6..............64 6................. General ................3.....................................................84 9.......................67 7................................64 6......................................................................................2 Protection against indirect contact.71 7....2................................................. VERIFICATION ELECTRICAL EQUIPMENT AND INSTALLATION.........................................82 9.........................58 6................1.................................................11 Emergency control .60 6...........................62 6.1.65 6.............................................13 Prevention mutual influence..................4.62 6................. Proper installation protective conductor ...1................................................................................................84 9......................................................................................................................................................................3 Geometric form and meaning safety signs ..................... Climate ..........................69 7........61 6.....61 6...........................4...........62 6......4.....64 6....................................................................................6 Cross-section conductors............. SAFETY SYMBOLS AND SAFETY IDENTIFICATION FOR USE ELECTRICAL EQUIPMENT ...2 Initial verification..................64 6..........2 Marking actuators...........5....................................................................... EXTERNAL INFLUENCES EFFECTING ELECTRICAL EQUIPMENT AND INSTALLATION ....3.............76 8.................69 7............................................................... Graphical symbols for use electrical equipment ...........2......3...........63 6...................................4........ Coding indicating devices and actuators colours (IEC 73)......................64 6.....1.........................................................74 7....4.......8 Protection against fault currents..3................ Testing............................4.................1 Indicating devices .......................................3...........4..............................................................................................................................3 Nature demand........67 7.......................................3..........................70 7....................2 Type wiring and methods installation .........................................................................................................3..............60 6...............4...........70 7........................60 6.................................................................66 7...............................4..................................................61 6..............................................10 Disconnecting devices ...............................85 ..............................4................................4........................... Visual inspection...65 6......................................72 7..................................1 Safety colours..................................68 7.....................2.......2 Preservation electrical continuity protective conductors......................................4............................................................. Proper installation electrical equipment............................................................................................1 Protection against thermal effects..................5............4.........................................................................................2 Example use safety colours and contrast colours.....CONTENTS 5 6.....84 9..3 Terminals for protective conductors ..................................64 6..........2..................................68 7........2.................................................9 Protection against overvoltage..........4 Selection electrical equipment..........74 8....................................................1 PEN conductor............14 Accessibility electrical equipment.....1 Protection against direct contact......

---

---