caterpillar connection diagrams: sr4 and sr4b generators ... · 12 lead, wye and delta connection...

SENR4794-06January 2002

Systems OperationConnection Diagrams: SR4 and SR4BGenerators, Voltage Regulators,Options

3Table of Contents

Table of Contents

Systems Operation Section

SR4 and SR4B Generators for All EnginesExcept SR4B for 3500 Engines

General Information (All Except SR4B for 3500Engines) .............................................................. 4

Main Stator and Voltage Sensing Lead Connections(All Except SR4B for 3500 Engines) ................... 5

Main Revolving Field Connections (All Except SR4Bfor 3500 Engines) ................................................ 9

Selection Guide for Voltage Regulator (All ExceptSR4B for 3500 Engines) ..................................... 11

VR3 Voltage Regulator Connections (All ExceptSR4B for 3500 Engines) ..................................... 12

VR3F Voltage Regulator Connections (All ExceptSR4B for 3500 Engines) ..................................... 18

VR4 Voltage Regulator Connections (All ExceptSR4B for 3500 Engines) ..................................... 21

Digital Voltage Regulator Connections (All ExceptSR4B for 3500 Engines) ..................................... 23

Options (All Except SR4B for 3500 Engines) ........ 27Oil Field Generator Connections (SR4) ................ 39

SR4B Generators for 3500 EnginesGeneral Information (SR4B for 3500 Engines) ..... 40Main Stator and Voltage Sensing Lead Connections(SR4B for 3500 Engines) .................................... 40

Main Revolving Field Connections (SR4B for 3500Engines) .............................................................. 42

Selection Guide for Voltage Regulator (SR4B for3500 Engines) ..................................................... 43

VR3 Voltage Regulator Connections (SR4B for 3500Engines) .............................................................. 44

VR3F Voltage Regulator Connections (SR4B for3500 Engines) ..................................................... 46

Digital Voltage Regulator Connections (SR4B for3500 Engines) ..................................................... 50

Options (SR4B for 3500 Engines) ......................... 52Generator Wiring Diagrams (SR4B for 3500Engines) .............................................................. 65

Index Section

Index ..................................................................... 75

4Systems Operation Section

Systems Operation Section

SR4 and SR4B Generatorsfor All Engines ExceptSR4B for 3500 Engines

i01315422

General Information (AllExcept SR4B for 3500 Engines)SMCS Code: 4450

Introduction

The 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 Section

i01318051

Main Stator and VoltageSensing Lead Connections (AllExcept SR4B for 3500 Engines)SMCS Code: 4453

12 Lead, Wye and Delta Connection

g00700302Illustration 1

6Systems Operation Section

10 Lead Wye Connection

g00700304Illustration 2

6 Lead Wye Connection

g00700317Illustration 3

7Systems Operation Section

6 Lead Delta Connection

g00700323Illustration 4

4 Lead Wye Connection

g00700333Illustration 5

8Systems Operation Section

12 Lead, Single Phase Connection

g00700337Illustration 6

9Systems Operation Section

i01330192

Main Revolving FieldConnections (All ExceptSR4B for 3500 Engines)SMCS Code: 4457

Diode Block

g00700353Illustration 7

Diode Block and Surge Suppressor

g00703882Illustration 8

10Systems Operation Section

Two Diode Blocks and SurgeSuppressor

g00695807Illustration 9

Three Diode Blocks and SurgeSuppressor

g00700361Illustration 10

11Systems Operation Section

Six Diodes and Two SurgeSuppressors

g00703892Illustration 11

i01330268

Selection Guide for VoltageRegulator (All Except SR4B for3500 Engines)SMCS Code: 4467

g00703951Illustration 12

12Systems Operation Section

i01330211

VR3 Voltage RegulatorConnections (All ExceptSR4B for 3500 Engines)SMCS Code: 4467

Self Excited with Direct Connectionto Generator

g00703900Illustration 13

13Systems Operation Section

Self Excited with PowerTransformer 4/6 Lead Generator

g00703908Illustration 14

14Systems Operation Section

Self Excited with Power andSensing Isolation Transformer

g00703914Illustration 15

15Systems Operation Section

Permanent Magnet Excitation withDirect Connection to Generator

g00701046Illustration 16

16Systems Operation Section

Permanent Magnet Excitation withConnections to Metering PotentialTransformers

g00701050Illustration 17

17Systems Operation Section

Permanent Magnet Excitationwith Connections to an IsolationTransformer

g00703923Illustration 18

18Systems Operation Section

i01314685

VR3F Voltage RegulatorConnections (All Except SR4Bfor 3500 Engines)SMCS Code: 4467

Knee Frequency andUnderfrequency Selection

g00695812Illustration 19

The 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.

• 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 Section

Typical Permanent Magnet ExcitedVR3F

g00702144Illustration 20

20Systems Operation Section

Typical Self Excited VR3F

g00702012Illustration 21

21Systems Operation Section

i01320368

VR4 Voltage RegulatorConnections (All ExceptSR4B for 3500 Engines)SMCS Code: 4467

Self Excited with Direct Connectionto Generator

g00702155Illustration 22

22Systems Operation Section

i01314468

Digital Voltage RegulatorConnections (All Except SR4Bfor 3500 Engines)SMCS Code: 4467

23Systems Operation Section

10/12 Lead with Direct Connectionto Generator

g00539518Illustration 23

24Systems Operation Section

10/12 Lead with Sensing IsolationTransformer

g00539520Illustration 24

25Systems Operation Section

4/6 Lead with Direct Connection toGenerator

g00539494Illustration 25

26Systems Operation Section

4/6 Lead with Sensing IsolationTransformer

g00539496Illustration 26

27Systems Operation Section

i01330242

Options (All Except SR4B for3500 Engines)SMCS Code: 4450

Manual Control with Self Excitation

g00702017Illustration 27

28Systems Operation Section

Manual Control with PowerTransformer

g00702135Illustration 28

29Systems Operation Section

Manual Control with PermanentMagnet Exciter

g00702138Illustration 29

30Systems Operation Section

Radio Interference Filter

g00703931Illustration 30

31Systems Operation Section

Series Boost with VR3 VoltageRegulator

g00702027Illustration 31

32Systems Operation Section

Series Boost with VR4 VoltageRegulator

g00702036Illustration 32

33Systems Operation Section

Manual Control and Series Boostwith Self Excitor

g00702180Illustration 33

34Systems Operation Section

Remote Voltage Adjust RheostatConnections

g00695920Illustration 34

35Systems Operation Section

Digital Voltage Regulator withManual Control

g00539523Illustration 35

36Systems Operation Section

Digital Voltage Regulator withRemote Voltage Adjust Rheostat

g00695943Illustration 36

37Systems Operation Section

Digital Voltage Regulator CustomerOptions

g00539524Illustration 37

38Systems Operation Section

Digital Voltage Regulator RemoteCommunications Connections

g00697822Illustration 38

39Systems Operation Section

i01320364

Oil Field GeneratorConnections (SR4)SMCS Code: 4450

Excitor Field Connection (Seriesor Parallel) and Voltage SensingLeads

g00702215Illustration 39

40Systems Operation Section

SR4B Generators for 3500Engines

i01318012

General Information (SR4B for3500 Engines)SMCS Code: 4450

Introduction

The 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.

i01320334

Main Stator and VoltageSensing Lead Connections(SR4B for 3500 Engines)SMCS Code: 4453

6 Lead Wye Connection

g00702224Illustration 40

41Systems Operation Section

6 Lead Delta Connection

g00702225Illustration 41

42Systems Operation Section

i01314709

Main Revolving FieldConnections (SR4B for 3500Engines)SMCS Code: 4457

Two Diode Blocks and SurgeSuppressor

g00695807Illustration 42

43Systems Operation Section

i01327215

Selection Guide for VoltageRegulator (SR4B for 3500Engines)SMCS Code: 4467

Selection Chart for SR4B VoltageRegulator

g00702273Illustration 43

i01314726

VR3 Voltage RegulatorConnections (SR4B for 3500Engines)SMCS Code: 4467

44Systems Operation Section

Self Excited with Direct Connectionto Generator

g00695965Illustration 44

45Systems Operation Section

Permanent Magnet Excitationwith Connections to an IsolationTransformer

g00695969Illustration 45

46Systems Operation Section

i01314367

VR3F Voltage RegulatorConnections (SR4B for 3500Engines)SMCS Code: 4467

Knee Frequency Selection andUnderfrequency Slope Selection

g00695812Illustration 46

47Systems Operation Section

Self Excited with Direct Connectionto Generator

g00695977Illustration 47

48Systems Operation Section

Permanent Magnet Excitationwith Connections to IsolationTransformers

g00695982Illustration 48

49Systems Operation Section

i01314775

Digital Voltage RegulatorConnections (SR4B for 3500Engines)SMCS Code: 4467

50Systems Operation Section

Permanent Magnet Excitationwith Connections to IsolationTransformers

g00695987Illustration 49

51Systems Operation Section

i01314806

Options (SR4B for 3500Engines)SMCS Code: 4450

52Systems Operation Section

VR3 with Manual Voltage Controland Self Excitation

g00695990Illustration 50

53Systems Operation Section

VR3 Manual Control withPermanent Magnet Excitation

g00695991Illustration 51

54Systems Operation Section

VR3 with Radio Interference Filterwith Self Excitation

g00695992Illustration 52

55Systems Operation Section

VR3 with Radio Interference andPermanent Magnet Excitation

g00695996Illustration 53

56Systems Operation Section

Remote Voltage Adjust RheostatConnections

g00695920Illustration 54

57Systems Operation Section

VR3F with Manual Voltage Controland Self Excitation

g00695997Illustration 55

58Systems Operation Section

VR3F with Manual Control andPermanent Magnet Excitation

g00695998Illustration 56

59Systems Operation Section

VR3F with Radio Interference Filterand Self Excitation

g00695999Illustration 57

60Systems Operation Section

VR3F with Radio Interference Filterand Permanent Magnet Excitation

g00696000Illustration 58

61Systems Operation Section

Digital Voltage Regulator withManual Control

g00696003Illustration 59

62Systems Operation Section

Digital Voltage Regulator withRemote VAR

g00695943Illustration 60

63Systems Operation Section

Digital voltage Regulator CustomerOptions

g00539524Illustration 61

64Systems Operation Section

Digital Voltage Regulator RemoteCommunications Connections

g00697822Illustration 62

75Index Section

Index

D

Digital Voltage Regulator Connections (All ExceptSR4B for 3500 Engines) ...................................... 2310/12 Lead with Direct Connection toGenerator ......................................................... 23

10/12 Lead with Sensing Isolation Transformer.. 244/6 Lead with Direct Connection to Generator... 254/6 Lead with Sensing Isolation Transformer ..... 26

Digital Voltage Regulator Connections (SR4B for3500 Engines)...................................................... 50Permanent Magnet Excitation with Connections toIsolation Transformers...................................... 50

G

General Information (All Except SR4B for 3500Engines)............................................................... 4Introduction ........................................................ 4

General Information (SR4B for 3500 Engines)...... 40Introduction ........................................................ 40

Generator Wiring Diagrams (SR4B for 3500Engines)............................................................... 65Wiring Diagram for 3500 EUI Low VoltageWith Digital Voltage Regulator and PermanentMagnet ............................................................. 65

Wiring Diagram for 3500 EUI Low Voltage WithVR3 and Permanent Magnet............................ 67

Wiring Diagram for 3500 EUI Low Voltage WithVR3 and Self-Excitation ................................... 69

Wiring Diagram for 3500 EUI Medium VoltageWith Digital Voltage Regulator and PermanentMagnet ............................................................. 71

Wiring Diagram for 3500 EUI Medium Voltage WithVR3 and Permanent Magnet............................ 73

I

Important Safety Information ................................. 2

M

Main 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.......... 10

Main Revolving Field Connections (SR4B for 3500Engines)............................................................... 42Two Diode Blocks and Surge Suppressor.......... 42

Main 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..................................... 6

Main Stator and Voltage Sensing Lead Connections(SR4B for 3500 Engines)..................................... 406 Lead Delta Connection ................................... 416 Lead Wye Connection..................................... 40

O

Oil Field Generator Connections (SR4)................. 39Excitor Field Connection (Series or Parallel) andVoltage Sensing Leads .................................... 39

Options (All Except SR4B for 3500 Engines) ........ 27Digital Voltage Regulator Customer Options ..... 37Digital Voltage Regulator Remote CommunicationsConnections ..................................................... 38

Digital Voltage Regulator with Manual Control... 35Digital Voltage Regulator with Remote VoltageAdjust Rheostat................................................ 36

Manual Control and Series Boost with SelfExcitor .............................................................. 33

Manual Control with Permanent MagnetExciter .............................................................. 29

Manual 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.......... 32

Options (SR4B for 3500 Engines) ......................... 52Digital voltage Regulator Customer Options...... 63Digital Voltage Regulator Remote CommunicationsConnections ..................................................... 64

Digital Voltage Regulator with Manual Control... 61Digital Voltage Regulator with Remote VAR ...... 62Remote Voltage Adjust Rheostat Connections .. 56VR3 Manual Control with Permanent MagnetExcitation.......................................................... 53

VR3 with Manual Voltage Control and SelfExcitation.......................................................... 52

VR3 with Radio Interference and PermanentMagnet Excitation............................................. 55

VR3 with Radio Interference Filter with SelfExcitation.......................................................... 54

VR3F with Manual Control and Permanent MagnetExcitation.......................................................... 58

VR3F with Manual Voltage Control and SelfExcitation.......................................................... 57

VR3F with Radio Interference Filter and PermanentMagnet Excitation............................................. 60

VR3F with Radio Interference Filter and SelfExcitation.......................................................... 59

S

Selection Guide for Voltage Regulator (All ExceptSR4B for 3500 Engines) ...................................... 11

Selection Guide for Voltage Regulator (SR4B for3500 Engines)...................................................... 43Selection Chart for SR4B Voltage Regulator ..... 43

SR4 and SR4B Generators for All Engines ExceptSR4B for 3500 Engines ....................................... 4

SR4B Generators for 3500 Engines ...................... 40Systems Operation Section ................................... 4

T

Table of Contents................................................... 3

V

VR3 Voltage Regulator Connections (All ExceptSR4B for 3500 Engines) ...................................... 12Permanent Magnet Excitation with Connections toan Isolation Transformer................................... 17

Permanent Magnet Excitation with Connections toMetering Potential Transformers ...................... 16

Permanent Magnet Excitation with DirectConnection to Generator.................................. 15

Self Excited with Direct Connection toGenerator ......................................................... 12

Self Excited with Power and Sensing IsolationTransformer ...................................................... 14

Self Excited with Power Transformer 4/6 LeadGenerator ......................................................... 13

VR3 Voltage Regulator Connections (SR4B for 3500Engines)............................................................... 44Permanent Magnet Excitation with Connections toan Isolation Transformer................................... 45

Self Excited with Direct Connection toGenerator ......................................................... 44

VR3F Voltage Regulator Connections (All ExceptSR4B for 3500 Engines) ...................................... 18Knee Frequency and UnderfrequencySelection .......................................................... 18

Typical Permanent Magnet Excited VR3F ......... 19Typical Self Excited VR3F.................................. 20

VR3F Voltage Regulator Connections (SR4B for3500 Engines)...................................................... 46Knee Frequency Selection and UnderfrequencySlope Selection ................................................ 46

Permanent Magnet Excitation with Connections toIsolation Transformers...................................... 48

Self Excited with Direct Connection toGenerator ......................................................... 47

VR4 Voltage Regulator Connections (All ExceptSR4B for 3500 Engines) ...................................... 21Self Excited with Direct Connection toGenerator ......................................................... 21

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