Eaton Magnefix MD4 - Page 5

Magnefix MD4
991.184 G01 03
5
3.9 Connection of plastic-insulated cables to Protected panels ............................ 67
3.9.1 Plastic-insulated cable with copper core up to 3 x 70 mm
2
..................................... 67
3.9.2 Connection of plastic-insulated cables with copper cores, 3 x 95 mm
2
up to 3 x
240 mm
2
............................................................................................................... 71
4. SYSTEM OPERATION .......................................................................... 75
4.1 Safe switching ..................................................................................................... 75
4.1.1 Switching on safely ............................................................................................... 75
4.1.2 Switching off safely ............................................................................................... 75
4.1.3 Safe earthing ........................................................................................................ 75
4.2 Switching ............................................................................................................. 76
4.2.1 Switching on ......................................................................................................... 76
4.2.2 Switching off ......................................................................................................... 79
4.3 Changing a fuse .................................................................................................. 80
4.4 Resetting an overcurrent indicator .................................................................... 81
4.4.1 Electromechanical overcurrent indicator ................................................................ 81
4.4.2 Electronic overcurrent indicator ............................................................................. 81
4.5 Protective relay operation .................................................................................. 81
4.6 Voltage indication ............................................................................................... 82
4.6.1 Voltage indication.................................................................................................. 83
4.6.2 System ‘dead’ indication ....................................................................................... 83
4.6.3 Phase sequence indicator ..................................................................................... 84
4.6.4 Demonstrate phases are in line ............................................................................. 85
4.7 Earthing ............................................................................................................... 86
4.7.1 Equipment............................................................................................................. 86
4.7.2 Earthing a cable using single-pole slow earthing ................................................... 87
4.7.3 Earthing a cable using three-pole high-speed earthing .......................................... 88
4.7.4 Removing three-pole high-speed earthing ............................................................. 90
4.7.5 Earthing a transformer .......................................................................................... 91
4.7.6 Earthing a protected panel .................................................................................... 92
4.8 Measuring, testing and phase sequence testing ............................................... 94
4.8.1 Measuring ............................................................................................................. 94
4.8.2 Testing .................................................................................................................. 94
4.8.3 Phase sequence testing ........................................................................................ 95
5. SYSTEM COMMISSIONING AND DECOMMISSIONING ..................... 96
5.1 Commissioning ................................................................................................... 96
5.1.1 Acceptance testing ................................................................................................ 96
5.1.2 Inspections ........................................................................................................... 96
5.1.3 Handover .............................................................................................................. 96
5.2 Decommissioning ............................................................................................... 96
5.2.1 Dismantling ........................................................................................................... 96
5.2.2 Procedure ............................................................................................................. 97
5.2.3 Disposal ................................................................................................................ 97
6. INSPECTION, MAINTENANCE AND REPAIR OF THE SYSTEM ........ 98
6.1 Logbook............................................................................................................... 98
6.2 Inspection and maintenance, general ................................................................ 98
6.2.1 Types of maintenance ........................................................................................... 98
6.2.2 Frequency ............................................................................................................. 98
6.2.3 Tools ..................................................................................................................... 99