Introduction to Electrical Engineering

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

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