Megger STVI Benutzerhandbuch Seite 10

3.3 Current Sources ................................................................................................................................... 76
3.3.1 Parallel Operation .............................................................................................................................. 76
3.3.1.1 Manual Test Screen - Single Phase Up To180 Ampere ................................................................ 77
3.3.2 Currents in Series Operation ............................................................................................................. 78
3.4 Voltage Sources ................................................................................................................................... 80
3.4.1 Outputs Summed Together ............................................................................................................... 80
3.4.2 3Ø, 3-Wire, Open-Delta and T-Connection ....................................................................................... 81
3.4.2.1 Balanced Open Delta ..................................................................................................................... 81
3.4.2.1.1 Unbalanced Open Delta .............................................................................................................. 84
3.4.2.2 T-Connection .................................................................................................................................. 85
3.4.3 3Ø, 4-Wire, Y-Connection ................................................................................................................. 85
3.5 Testing Relays with the Manual Test Screen ....................................................................................... 87
3.5.1 Simple Manual Pickup or Dropout Test ............................................................................................. 87
3.5.2 Simple Manual Timing Test ............................................................................................................... 88
3.5.3 Simple Ramp Test ............................................................................................................................. 91
3.5.3.1 Configuring of Multiple Ramps ....................................................................................................... 92
3.5.3.2 Step Ramp Example ...................................................................................................................... 93
3.5.3.3 Pulse Ramp Example ..................................................................................................................... 93
3.5.3.4 Pulse Ramp Binary Search Example ............................................................................................. 94
3.5.3.5 EM (Electromechanical) Overcurrent Pickup Example .................................................................. 95
3.5.3.6 Instantaneous Pickup Example ...................................................................................................... 96
3.5.4 Advanced Ramp Test ........................................................................................................................ 97
3.5.4.1 Setting Values ................................................................................................................................ 98
3.5.4.1.1 Show Pre-fault Conditions button ................................................................................................ 98
3.5.4.1.2 Show Ramp Start button ............................................................................................................. 98
3.5.4.1.3 Show Ramp Increment button ..................................................................................................... 98
3.5.4.1.4 Show Ramp End button .............................................................................................................. 98
3.5.4.2 Smooth Ramp ................................................................................................................................ 99
3.5.5 Ramping Battery Simulator Output .................................................................................................... 99
3.5.6 Overcurrent Tests .............................................................................................................................. 99
3.5.6.1 Curve Selection Button ................................................................................................................. 101
3.5.6.1.1 Manufacturer's Model Button .................................................................................................... 102
3.5.6.1.2 Relay's Curve and Direction per Element – Selection and Configuration ................................. 102
3.5.6.1.3 Run Test Screen ....................................................................................................................... 106
3.5.6.1.3.1 Change Test Button ............................................................................................................... 107
3.5.6.1.3.2 Relay Settings Button ............................................................................................................. 108
3.5.6.1.3.3 Relay Connections Button ...................................................................................................... 108
3.5.6.1.5.4 Battery Simulator Button ........................................................................................................ 108
3.5.6.1.5.5 Binary Input Setting button ..................................................................................................... 108
3.5.6.1.5.6 View Test Results button ........................................................................................................ 108
3.5.6.1.6 Performing Tests ....................................................................................................................... 108
3.5.6.1.6.1 Phase Pickup Button .............................................................................................................. 108
3.5.6.1.6.2 Phase Timing Button .............................................................................................................. 109
3.5.6.1.6.3 Phase Instantaneous Button .................................................................................................. 109
3.5.6.1.6.4 Phase Directional Button ........................................................................................................ 110
3.5.6.1.6.5 Ground Pickup Button ............................................................................................................ 110
3.5.6.1.6.6 Ground Timing Button ............................................................................................................ 111
3.5.6.1.6.7 Ground Instantaneous Button ................................................................................................ 111
3.5.6.1.6.8 Ground Directional Button ...................................................................................................... 112
3.5.6.1.6.9 Ground Target and Seal-In Button ......................................................................................... 113
3.5.7 Testing Over Voltage Relays ........................................................................................................... 113
3.5.7.1 Manufacturer Selection Button ..................................................................................................... 115
3.5.7.2 Manufacturer's Model Button ....................................................................................................... 115
3.5.7.3 Run Test Screen .......................................................................................................................... 116
3.5.7.3.1 Change Test Button .................................................................................................................. 116
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Teil 81757
Rev 15; Datum: 06/2018