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4.16 SCR DC Bus Bar - TTS300/TGS230 ................................................................................................................................................119
4.16.1 SCR DC Bus Bar Removal and Installation .................................................................................................................................................................................................120
4.17 Soft Start SCR Gate Cable .............................................................................................................................................................121
4.17.1 Soft Start SCR Gate Cable Connections .....................................................................................................................................................................................................121
4.17.2 Soft Start SCR Gate Cable Removal and Installation .............................................................................................................................................................................121
4.18 Soft Start AC/DC Harness ..............................................................................................................................................................124
4.18.1 Soft Start AC/DC Harness Connections .....................................................................................................................................................................................................125
4.18.2 Soft Start AC/DC Harness Removal and Installation .............................................................................................................................................................................127
4.19 Silicone-Controlled Rectifier ....................................................................................................................................................... 133
4.19.1 SCR Connections ................................................................................................................................................................................................................................................134
4.19.2 SCR Verification ...................................................................................................................................................................................................................................................135
4.19.3 SCR Removal and Installation........................................................................................................................................................................................................................141
4.20 SCR Cooling Manifold ...................................................................................................................................................................150
4.20.1 SCR Cooling Manifold General Removal ...................................................................................................................................................................................................150
4.20.2 SCR Cooling Manifold Removal - TTS300/TGS230 .................................................................................................................................................................................150
4.20.3 SCR Cooling Manifold Removal - TTS/TGS/TTH/TGH (Except TTS300/TGS230) ..........................................................................................................................151
4.20.4 SCR Cooling Manifold Installation - TTS300/TGS230 ............................................................................................................................................................................152
4.20.5 SCR Cooling Manifold Installation - TTS/TGS/TTH/TGH (Except TTS300/TGS230) .....................................................................................................................153
4.20.6 SCR Cooling Manifold General Installation ..............................................................................................................................................................................................154
4.20.7 SCR Cooling Manifold Torque Specifications. ..........................................................................................................................................................................................155
4.21 Snubber Capacitors .......................................................................................................................................................................156
4.22 DC Capacitor Bus Bar Assembly ...................................................................................................................................................156
4.22.1 DC Capacitor DC Bus Bar Connections ......................................................................................................................................................................................................157
4.22.2 DC Bus Voltage Verification ............................................................................................................................................................................................................................158
4.22.3 DC Capacitor Bus Bar Assembly Removal and Installation .................................................................................................................................................................158
4.22.4 DC Capacitor Bus Bar Assembly General Removal ................................................................................................................................................................................158
4.22.5 DC Capacitor Bus Bar Assembly General Installation Steps ...............................................................................................................................................................163
4.22.6 DC Capacitor Bus Bar Assembly Torque Specifications .......................................................................................................................................................................164
4.23 Inverter........................................................................................................................................................................................... 165
4.23.1 Inverter Connections ........................................................................................................................................................................................................................................165
4.23.2 Inverter Verification ...........................................................................................................................................................................................................................................165
4.23.3 Inverter Cable Harness .....................................................................................................................................................................................................................................166
4.23.4 Inverter Cable Harness Removal and Installation ..................................................................................................................................................................................166
4.23.5 Inverter Cable Harness Installation .............................................................................................................................................................................................................167
4.23.6 Inverter Removal and Installation................................................................................................................................................................................................................168
4.23.7 Inverter Card Replacement ............................................................................................................................................................................................................................187
4.23.8 Inverter Torque Specifications ......................................................................................................................................................................................................................190
4.24 Motor Components .......................................................................................................................................................................191
4.24.1 Function ................................................................................................................................................................................................................................................................191
4.24.2 Motor Protection ................................................................................................................................................................................................................................................191
4.24.3 Motor Connections ...........................................................................................................................................................................................................................................192
4.24.4 Motor Verification ..............................................................................................................................................................................................................................................192
4.24.5 Motor Assembly Removal and Installation...............................................................................................................................................................................................193
4.25 High Voltage DC-DC Converter ....................................................................................................................................................201
4.25.1 DC-DC Converter Function .............................................................................................................................................................................................................................201
4.25.2 DC-DC Converter Verification ........................................................................................................................................................................................................................201
4.25.3 DC-DC Supply Cable Harness .......................................................................................................................................................................................................................202
4.25.4 DC-DC Harness Removal and Installation .................................................................................................................................................................................................203
4.26 Backplane ...................................................................................................................................................................................... 207
4.26.1 Backplane Function ..........................................................................................................................................................................................................................................207
4.26.2 Backplane Connections and Test Points ...................................................................................................................................................................................................208
4.26.3 Backplane Removal and Installation...........................................................................................................................................................................................................211
4.27 Serial Driver ................................................................................................................................................................................... 212
4.27.1 Serial Driver Function .......................................................................................................................................................................................................................................212
4.27.2 Serial Driver Connections ...............................................................................................................................................................................................................................213
4.27.3 Serial Driver Verification ..................................................................................................................................................................................................................................213
4.27.4 Serial Driver Removal and Installation .......................................................................................................................................................................................................213
4.28 BMCC .............................................................................................................................................................................................. 214
4.28.1 BMCC Connections............................................................................................................................................................................................................................................215
4.28.2 BMCC Verification ..............................................................................................................................................................................................................................................215
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