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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