Caterpillar Connection Diagrams: SR4 And SR4B Generators .
SENR4794-06January 2002Systems OperationConnection Diagrams: SR4 and SR4BGenerators, Voltage Regulators,Options
3Table of ContentsTable of ContentsSystems Operation SectionSR4 and SR4B Generators for All EnginesExcept SR4B for 3500 EnginesGeneral Information (All Except SR4B for 3500Engines) . 4Main Stator and Voltage Sensing Lead Connections(All Except SR4B for 3500 Engines) . 5Main Revolving Field Connections (All Except SR4Bfor 3500 Engines) . 9Selection Guide for Voltage Regulator (All ExceptSR4B for 3500 Engines) . 11VR3 Voltage Regulator Connections (All ExceptSR4B for 3500 Engines) . 12VR3F Voltage Regulator Connections (All ExceptSR4B for 3500 Engines) . 18VR4 Voltage Regulator Connections (All ExceptSR4B for 3500 Engines) . 21Digital Voltage Regulator Connections (All ExceptSR4B for 3500 Engines) . 23Options (All Except SR4B for 3500 Engines) . 27Oil Field Generator Connections (SR4) . 39SR4B Generators for 3500 EnginesGeneral Information (SR4B for 3500 Engines) . 40Main Stator and Voltage Sensing Lead Connections(SR4B for 3500 Engines) . 40Main Revolving Field Connections (SR4B for 3500Engines) . 42Selection Guide for Voltage Regulator (SR4B for3500 Engines) . 43VR3 Voltage Regulator Connections (SR4B for 3500Engines) . 44VR3F Voltage Regulator Connections (SR4B for3500 Engines) . 46Digital Voltage Regulator Connections (SR4B for3500 Engines) . 50Options (SR4B for 3500 Engines) . 52Generator Wiring Diagrams (SR4B for 3500Engines) . 65Index SectionIndex . 75
4Systems Operation SectionSystems Operation SectionSR4 and SR4B Generatorsfor All Engines ExceptSR4B for 3500 Enginesi01315422General Information (AllExcept SR4B for 3500 Engines)SMCS Code: 4450IntroductionThe diagrams that follow apply to the SR4Generators and the SR4B Generators (except forthe SR4B used with 3500 Engines).Note: Diagrams for the SR4B used with 3500Engines appear later in this manual.
5Systems Operation Sectioni01318051Main Stator and VoltageSensing Lead Connections (AllExcept SR4B for 3500 Engines)SMCS Code: 445312 Lead, Wye and Delta ConnectionIllustration 1g00700302
6Systems Operation Section10 Lead Wye ConnectionIllustration 2g007003046 Lead Wye ConnectionIllustration 3g00700317
7Systems Operation Section6 Lead Delta ConnectionIllustration 4g007003234 Lead Wye ConnectionIllustration 5g00700333
8Systems Operation Section12 Lead, Single Phase ConnectionIllustration 6g00700337
9Systems Operation Sectioni01330192Main Revolving FieldConnections (All ExceptSR4B for 3500 Engines)SMCS Code: 4457Diode BlockIllustration 7g00700353Diode Block and Surge SuppressorIllustration 8g00703882
10Systems Operation SectionTwo Diode Blocks and SurgeSuppressorIllustration 9g00695807Three Diode Blocks and SurgeSuppressorIllustration 10g00700361
11Systems Operation SectionSix Diodes and Two SurgeSuppressorsg00703892Illustration 11i01330268Selection Guide for VoltageRegulator (All Except SR4B for3500 Engines)SMCS Code: 4467Illustration 12g00703951
12Systems Operation Sectioni01330211VR3 Voltage RegulatorConnections (All ExceptSR4B for 3500 Engines)SMCS Code: 4467Self Excited with Direct Connectionto GeneratorIllustration 13g00703900
13Systems Operation SectionSelf Excited with PowerTransformer 4/6 Lead GeneratorIllustration 14g00703908
14Systems Operation SectionSelf Excited with Power andSensing Isolation TransformerIllustration 15g00703914
15Systems Operation SectionPermanent Magnet Excitation withDirect Connection to GeneratorIllustration 16g00701046
16Systems Operation SectionPermanent Magnet Excitation withConnections to Metering PotentialTransformersIllustration 17g00701050
17Systems Operation SectionPermanent Magnet Excitationwith Connections to an IsolationTransformerIllustration 18g00703923
18Systems Operation Sectioni01314685VR3F Voltage RegulatorConnections (All Except SR4Bfor 3500 Engines)SMCS Code: 4467Knee Frequency andUnderfrequency SelectionIllustration 19The physical differences between the VR3 and theVR3F are minor. The hole for Gain adjustment iseliminated and another terminal is added to theupper row (terminal 10) on the VR3F.All VR3F connections to the generator or externaloptions are identical to the VR3. The additionalwiring for the VR3F is shown in the previousdiagram.The following information is applicable to bothVR3F designs: Self-Excited and Permanent MagnetExcited. In order to determine the knee frequency, installa jumper from terminal 6 to terminal 10 on theregulator if the generator is operating at 60 Hz.If the generator is operating at 50 Hz, removethe jumper.g00695812 In order to determine the underfrequency slopeselection, install a jumper from terminal 6 toterminal 8 on the regulator if a 1:1 Volts/Hertzunderfrequency slope is desired. remove thejumper If a 2:1 Volts/Hertz underfrequency slopeis needed.
19Systems Operation SectionTypical Permanent Magnet ExcitedVR3FIllustration 20g00702144
20Systems Operation SectionTypical Self Excited VR3FIllustration 21g00702012
21Systems Operation Sectioni01320368VR4 Voltage RegulatorConnections (All ExceptSR4B for 3500 Engines)SMCS Code: 4467Self Excited with Direct Connectionto GeneratorIllustration 22g00702155
22Systems Operation Sectioni01314468Digital Voltage RegulatorConnections (All Except SR4Bfor 3500 Engines)SMCS Code: 4467
23Systems Operation Section10/12 Lead with Direct Connectionto GeneratorIllustration 23g00539518
24Systems Operation Section10/12 Lead with Sensing IsolationTransformerIllustration 24g00539520
25Systems Operation Section4/6 Lead with Direct Connection toGeneratorIllustration 25g00539494
26Systems Operation Section4/6 Lead with Sensing IsolationTransformerIllustration 26g00539496
27Systems Operation Sectioni01330242Options (All Except SR4B for3500 Engines)SMCS Code: 4450Manual Control with Self ExcitationIllustration 27g00702017
28Systems Operation SectionManual Control with PowerTransformerIllustration 28g00702135
29Systems Operation SectionManual Control with PermanentMagnet ExciterIllustration 29g00702138
30Systems Operation SectionRadio Interference FilterIllustration 30g00703931
31Systems Operation SectionSeries Boost with VR3 VoltageRegulatorIllustration 31g00702027
32Systems Operation SectionSeries Boost with VR4 VoltageRegulatorIllustration 32g00702036
33Systems Operation SectionManual Control and Series Boostwith Self ExcitorIllustration 33g00702180
34Systems Operation SectionRemote Voltage Adjust RheostatConnectionsIllustration 34g00695920
35Systems Operation SectionDigital Voltage Regulator withManual ControlIllustration 35g00539523
36Systems Operation SectionDigital Voltage Regulator withRemote Voltage Adjust RheostatIllustration 36g00695943
37Systems Operation SectionDigital Voltage Regulator CustomerOptionsIllustration 37g00539524
38Systems Operation SectionDigital Voltage Regulator RemoteCommunications ConnectionsIllustration 38g00697822
39Systems Operation Sectioni01320364Oil Field GeneratorConnections (SR4)SMCS Code: 4450Excitor Field Connection (Seriesor Parallel) and Voltage SensingLeadsIllustration 39g00702215
40Systems Operation SectionSR4B Generators for 3500Enginesi01318012General Information (SR4B for3500 Engines)SMCS Code: 4450IntroductionThe Diagrams that follow apply to the SR4BGenerators used with 3500 Engines.Note: Diagrams for the SR4 and other SR4BGenerators appear at the beginning of this manual.i01320334Main Stator and VoltageSensing Lead Connections(SR4B for 3500 Engines)SMCS Code: 44536 Lead Wye ConnectionIllustration 40g00702224
41Systems Operation Section6 Lead Delta ConnectionIllustration 41g00702225
42Systems Operation Sectioni01314709Main Revolving FieldConnections (SR4B for 3500Engines)SMCS Code: 4457Two Diode Blocks and SurgeSuppressorIllustration 42g00695807
43Systems Operation Sectioni01327215Selection Guide for VoltageRegulator (SR4B for 3500Engines)SMCS Code: 4467Selection Chart for SR4B VoltageRegulatorg00702273Illustration 43i01314726VR3 Voltage RegulatorConnections (SR4B for 3500Engines)SMCS Code: 4467
44Systems Operation SectionSelf Excited with Direct Connectionto GeneratorIllustration 44g00695965
45Systems Operation SectionPermanent Magnet Excitationwith Connections to an IsolationTransformerIllustration 45g00695969
46Systems Operation Sectioni01314367VR3F Voltage RegulatorConnections (SR4B for 3500Engines)SMCS Code: 4467Knee Frequency Selection andUnderfrequency Slope SelectionIllustration 46g00695812
47Systems Operation SectionSelf Excited with Direct Connectionto GeneratorIllustration 47g00695977
48Systems Operation SectionPermanent Magnet Excitationwith Connections to IsolationTransformersIllustration 48g00695982
49Systems Operation Sectioni01314775Digital Voltage RegulatorConnections (SR4B for 3500Engines)SMCS Code: 4467
50Systems Operation SectionPermanent Magnet Excitationwith Connections to IsolationTransformersIllustration 49g00695987
51Systems Operation Sectioni01314806Options (SR4B for 3500Engines)SMCS Code: 4450
52Systems Operation SectionVR3 with Manual Voltage Controland Self ExcitationIllustration 50g00695990
53Systems Operation SectionVR3 Manual Control withPermanent Magnet ExcitationIllustration 51g00695991
54Systems Operation SectionVR3 with Radio Interference Filterwith Self ExcitationIllustration 52g00695992
55Systems Operation SectionVR3 with Radio Interference andPermanent Magnet ExcitationIllustration 53g00695996
56Systems Operation SectionRemote Voltage Adjust RheostatConnectionsIllustration 54g00695920
57Systems Operation SectionVR3F with Manual Voltage Controland Self ExcitationIllustration 55g00695997
58Systems Operation SectionVR3F with Manual Control andPermanent Magnet ExcitationIllustration 56g00695998
59Systems Operation SectionVR3F with Radio Interference Filterand Self ExcitationIllustration 57g00695999
60Systems Operation SectionVR3F with Radio Interference Filterand Permanent Magnet ExcitationIllustration 58g00696000
61Systems Operation SectionDigital Voltage Regulator withManual ControlIllustration 59g00696003
62Systems Operation SectionDigital Voltage Regulator withRemote VARIllustration 60g00695943
63Systems Operation SectionDigital voltage Regulator CustomerOptionsIllustration 61g00539524
64Systems Operation SectionDigital Voltage Regulator RemoteCommunications ConnectionsIllustration 62g00697822
75Index SectionIndexDDigital Voltage Regulator Connections (All ExceptSR4B for 3500 Engines) . 2310/12 Lead with Direct Connection toGenerator . 2310/12 Lead with Sensing Isolation Transformer. 244/6 Lead with Direct Connection to Generator. 254/6 Lead with Sensing Isolation Transformer . 26Digital Voltage Regulator Connections (SR4B for3500 Engines). 50Permanent Magnet Excitation with Connections toIsolation Transformers. 50Main Stator and Voltage Sensing Lead Connections(All Except SR4B for 3500 Engines) . 510 Lead Wye Connection. 612 Lead, Single Phase Connection. 812 Lead, Wye and Delta Connection . 54 Lead Wye Connection. 76 Lead Delta Connection . 76 Lead Wye Connection. 6Main Stator and Voltage Sensing Lead Connections(SR4B for 3500 Engines) . 406 Lead Delta Connection . 416 Lead Wye Connection. 40OGGeneral Information (All Except SR4B for 3500Engines). 4Introduction . 4General Information (SR4B for 3500 Engines) . 40Introduction . 40Generator Wiring Diagrams (SR4B for 3500Engines). 65Wiring Diagram for 3500 EUI Low VoltageWith Digital Voltage Regulator and PermanentMagnet . 65Wiring Diagram for 3500 EUI Low Voltage WithVR3 and Permanent Magnet. 67Wiring Diagram for 3500 EUI Low Voltage WithVR3 and Self-Excitation . 69Wiring Diagram for 3500 EUI Medium VoltageWith Digital Voltage Regulator and PermanentMagnet . 71Wiring Diagram for 3500 EUI Medium Voltage WithVR3 and Permanent Magnet. 73IImportant Safety Information . 2MMain Revolving Field Connections (All Except SR4Bfor 3500 Engines) . 9Diode Block. 9Diode Block and Surge Suppressor. 9Six Diodes and Two Surge Suppressors. 11Three Diode Blocks and Surge Suppressor. 10Two Diode Blocks and Surge Suppressor. 10Main Revolving Field Connections (SR4B for 3500Engines). 42Two Diode Blocks and Surge Suppressor. 42Oil Field Generator Connections (SR4). 39Excitor Field Connection (Series or Parallel) andVoltage Sensing Leads . 39Options (All Except SR4B for 3500 Engines) . 27Digital Voltage Regulator Customer Options . 37Digital Voltage Regulator Remote CommunicationsConnections . 38Digital Voltage Regulator with Manual Control. 35Digital Voltage Regulator with Remote VoltageAdjust Rheostat. 36Manual Control and Series Boost with SelfExcitor . 33Manual Control with Permanent MagnetExciter . 29Manual Control with Power Transformer . 28Manual Control with Self Excitation . 27Radio Interference Filter . 30Remote Voltage Adjust Rheostat Connections . 34Series Boost with VR3 Voltage Regulator. 31Series Boost with VR4 Voltage Regulator. 32Options (SR4B for 3500 Engines) . 52Digital voltage Regulator Customer Options. 63Digital Voltage Regulator Remote CommunicationsConnections . 64Digital Voltage Regulator with Manual Control. 61Digital Voltage Regulator with Remote VAR . 62Remote Voltage Adjust Rheostat Connections . 56VR3 Manual Control with Permanent MagnetExcitation. 53VR3 with Manual Voltage Control and SelfExcitation. 52VR3 with Radio Interference and PermanentMagnet Excitation. 55VR3 with Radio Interference Filter with SelfExcitation. 54VR3F with Manual Control and Permanent MagnetExcitation. 58VR3F with Manual Voltage Control and SelfExcitation. 57VR3F with Radio Interference Filter and PermanentMagnet Excitation. 60VR3F with Radio Interference Filter and SelfExcitation. 59
SSelection Guide for Voltage Regulator (All ExceptSR4B for 3500 Engines) . 11Selection Guide for Voltage Regulator (SR4B for3500 Engines). 43Selection Chart for SR4B Voltage Regulator . 43SR4 and SR4B Generators for All Engines ExceptSR4B for 3500 Engines . 4SR4B Generators for 3500 Engines . 40Systems Operation Section . 4TTable of Contents. 3VVR3 Voltage Regulator Connections (All ExceptSR4B for 3500 Engines) . 12Permanent Magnet Excitation with Connections toan Isolation Transformer. 17Permanent Magnet Excitation with Connections toMetering Potential Transformers . 16Permanent Magnet Excitation with DirectConnection to Generator. 15Self Excited with Direct Connection toGenerator . 12Self Excited with Power and Sensing IsolationTransformer . 14Self Excited with Power Transformer 4/6 LeadGenerator . 13VR3 Voltage Regulator Connections (SR4B for 3500Engines). 44Permanent Magnet Excitation with Connections toan Isolation Transformer. 45Self Excited with Direct Connection toGenerator . 44VR3F Voltage Regulator Connections (All ExceptSR4B for 3500 Engines) . 18Knee Frequency and UnderfrequencySelection . 18Typical Permanent Magnet Excited VR3F . 19Typical Self Excited VR3F. 20VR3F Voltage Regulator Connections (SR4B for3500 Engines). 46Knee Frequency Selection and UnderfrequencySlope Selection . 46Permanent Magnet Excitation with Connections toIsolation Transformers. 48Self Excited with Direct Connection toGenerator . 47VR4 Voltage Regulator Connections (All ExceptSR4B for 3500 Engines) . 21Self Excited with Direct Connection toGenerator . 21 2002 CaterpillarAll Rights ReservedPrinted in U.S.A.
VR3 Manual Control with Permanent Magnet Excitation Illustration 51 g00695991. 54 Systems Operation Section VR3 with Radio Interference Filter with Self Excitation Illustration 52 g00695992. 55 Systems Operation Section VR3 with Radio Interference and Permanent Magnet Excitation Illustration 53 g00695996. 56 Systems Operation Section Remote Voltage Adjust Rheostat Connections Illustration 54 .
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Generator Wiring Diagrams (SR4B for 3500 Engines) . 65 Index Section Index . 75. 4 Systems Operation Section Systems Operation Section SR4 and SR4B Generators for All Engines Except SR4B for 3500 Engines i01315422 General Information (All Except SR4B for 3500 Engines) SMCS .
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happen in your experiment. Which caterpillar do you think will be the fastest eater? 3 Collect Data on Caterpillar Feeding Take the caterpillar's temperature 2 Use the thermometer to take the caterpillar's temperature. Just shine the light on the caterpillar and check the screen! Pick a caterpillar and set the timer. Count how many
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