PLATE 3460408 - Caterpillar

Operation Of Generator
EARLIER SRCR GENERATOR WIRING DIAGRAM FIG. 1 A1 Regulator AssemblyA2,3,4 Suppression AssembliesC1 Surge CapacitorC2,3 Suppression CapacitorC4,5,6 RFI Suppression CapacitorsCR1,2 Control RectifiersCR3,4 Power RectifiersCR5 Field RectifierCR6 Build-up DiodesCR7,8 Surge Suppression DiodesCR9,11 Blocking DiodesE1,3 SCR Heat SinkE2,4 Rectifier Heat SinkE5 Field Rectifier Heat SinkF1,2 FusesK1 Build-up RelayL1 Filter ReactorL2 Sensing ReactorL3 Revolving FieldL4 StatorL5 Suppression ReactorL6,7 SCR ReactorL8 Diode ReactorR1 Regulator Gain ResistorR2 Regulator Gain PotentiometerR3 Voltage Droop PotentiometerR4 Voltage Level PotentiometerR5 Resistance WireR6 Surge ResistorR7 Damping ResistorT1 Isolation TransformerT2 Voltage Droop TransformerT3 Regulator TransformerTB1,2 Terminal Block
EARLIER SRCR GENERATOR WIRING DIAGRAM FIG. 2 A4 Suppression AssemblyC2,3 Suppression CapacitorCR1,2 Control RectifiersCR3,4 Power RectifiersCR6 Build-up DiodesCR7 Surge Suppression DiodeCR9,11 Blocking DiodesE3 SCR Heat SinkE2,4 Rectifier Heat SinkE5 Field Rectifier Heat SinkK1 Build-up RelayL7 SCR ReactorR2 Regulator Gain PotentiometerR5 Resistance WireTB1 Terminal Block
EARLIER SRCR GENERATOR WIRING DIAGRAM FIG. 3 A1 Regulator AssemblyA2,3,4 Suppression AssembliesC1 Surge CapacitorC2,3 Suppression CapacitorC4,5,6 RFI Suppression CapacitorsCR1,2 Control RectifiersCR3,4 Power RectifiersCR5 Field RectifierCR6 Build-up DiodesCR7,8 Surge Suppression DiodesCR9,11 Blocking DiodesE1,3 SCR Heat SinkE2,4 Rectifier Heat SinkE5 Field Rectifier Heat SinkF1,2 FusesK1 Build-up RelayL1 Filter ReactorL2 Sensing ReactorL3 Revolving FieldL4 StatorL5 Suppression ReactorL6,7 SCR ReactorL8 Diode ReactorR1 Regulator Gain ResistorR2 Regulator Gain PotentiometerR3 Voltage Droop PotentiometerR4 Voltage Level PotentiometerR5 Resistance WireR6 Surge ResistorR7 Damping ResistorT1 Isolation TransformerT2 Voltage Droop TransformerT3 Regulator TransformerTB1,2 Terminal Block
EARLIER SRCR GENERATOR WIRING DIAGRAM FIG. 4 A4 Suppression AssemblyC2,3 Suppression CapacitorCR1,2 Control RectifiersCR3,4 Power RectifiersCR6 Build-up DiodesCR7 Surge Suppression DiodeCR9,11 Blocking DiodesE3 SCR Heat SinkE2,4 Rectifier Heat SinkE5 Field Rectifier Heat SinkK1 Build-up RelayL7 SCR ReactorR2 Regulator Gain PotentiometerR5 Resistance WireTB1,2 Terminal Block
LATER SRCR GENERATOR WIRING DIAGRAM FIG. 5 A4 Suppression AssemblyC2,3 Suppression CapacitorCR1,2 Control RectifiersCR3,4 Power RectifiersCR6,10 Build-up DiodesCR7 Surge Suppression DiodeCR9,11 Blocking DiodesE3 SCR Heat SinkE2,4 Rectifier Heat SinkE5 Field Rectifier Heat SinkK1 Build-up RelayL7 SCR ReactorR2 Regulator Gain PotentiometerR5,8 Resistance WireTB1 Terminal Block
LATER SRCR GENERATOR WIRING DIAGRAM FIG. 6 A4 Suppression AssemblyC2,3 Suppression CapacitorCR1,2 Control RectifiersCR3,4 Power RectifiersCu6,10 Build-up DiodesCR7 Surge Suppression DiodeCR9,11 Blocking DiodesE3 SCR Heat SinkE2,4 Rectifier Heat SinkE5 Field Rectifier Heat SinkK1 Build-up RelayL7 SCR ReactorR2 Regulator Gain PotentiometerR5,8 Resistance WireTB1 Terminal Block
SRCR GENERATOR WIRING DIAGRAM FIG. 7 A1 Regulator AssemblyF2 FuseL1 Filter ReactorL2 Sensing ReactorL4 StatorR3 Voltage Droop PotentiometerR4 Voltage Level PotentiometerT1 Isolation TransformerT2 Voltage Droop TransformerT3 Regulator TransformerTB1,2 Terminal BlockIntroduction
The Statically Regulated Controlled Rectifier (SRCR) generator uses a method of excitation controlled by an automatic voltage regulation system that has no parts that move. The voltage build-up system has one relay.The generator is made with the armature coils wound on stator (L4) and the field coils are wound on revolving field (L3). The field coils are wound on magnetic steel that will retain a small amount of magnetism even when there is no current to the field. The generator shaft is connected to the engine flywheel by a flexible coupling. The difference between earlier and later SRCR voltage build-up systems is in the wiring of build-up relay (K1).Voltage Build-Up (Earlier)
Build-up relay (K1) has the only part that moves [except for revolving field (L3)] in