Introduction to Electrical Engineering

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..................6.......................... Operation test equipment.......................2.............. 93 11..... Electrical work activities school laboratories ............................5 Automatic disconnection supply..........2 Insulation resistance the electrical installation.......................................1 General ...................1........................................................................................ Maintenance procedures ...3..................................7.............. Operational status ...................................................... 88 10......................................................... Test laboratories and experimental stations.........................................2....................................3....... ERECTION AND OPERATION ELECTRICAL TEST EQUIPMENT.................... 102 13......3....................................................................................................... 104 14................................................................................................................... OPERATION ELECTRICAL INSTALLATIONS...................4.. 90 10... 96 11.... 107 15.................... 96 11.......... 108 .................1 Emergency switching off...............................4...........................................................................................................................3 Preventing automatic energizing ........................ 85 9............. 99 11................3 Protection separation circuits (electrical separation)..................................................... 87 10............................. Electrical test equipment............................3............................................ 89 10............... 100 12..... Protection against electric shock............................................................................ 97 11....... Preparation tests, switching operations test stations............................................................................... Test stations with automatic protection against direct contact ............CONTENTS 6 9.................... Standard operational procedures........ 98 11........... 95 11............ Working procedures...............................................2 Personnel ................................................................................................................3...................................... Bibliography.............................................................. 86 9........................................................... 98 11................. Test procedure........ Personnel...........................7..............................3........................... 91 11.. 86 9.. Test stations without automatic protection against direct contact .......2 Preventing unauthorised and unintentional switching -on .3.............................. 96 11.....3.................................. 94 11............................................................... 86 9................. 95 11..........3........... 96 11..................... 95 11..... 93 11.................1.............................................10..3...................................................5.........................7........................................... FIRST AID TREATMENT THE ELECTRIC SHOCK ..............8......................6 Measurement the resistance protective conductors................... 85 9.......................... Vocabulary ..4 Polarity test............ 97 11.........................3..................................................................... Occupational Safety and Health Regulations ...........................9......... 91 10.....3..............4 Protection against residual voltages and transfer voltages.....................................................................................1 Continuity the protective conductors, including the main and supplementary equipotential bonding..................... 97 11..................

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