RFL Electronics RFL 9300 - High-Resistance Ground Fault; Figure 3-6. High-Resistance Ground Fault with Heavy Through-Load, Causing an Outfeed Condition; Figure 3-7. Polar Diagram

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3.6 HIGH-RESISTANCE GROUND FAULT

Heavy through-load coupled with a high-resistance ground fault may create an "outfeed" condition that is very

difficult for most relay schemes to detect. (See Figure 3-4.)

RFL 9300 RFL Electronics Inc.

August 25, 2000 3 - 5 (973) 334-3100

Figure 3-6. High-resistance ground fault with heavy through-load, causing an outfeed condition

Figure 3-7 is a polar diagram with the currents on the faulted phase in Figure 3-6 plotted. Since the RFL 9300

has a "rainbow" characteristic, the relay correctly trips.

Shaded area is restraint

R = -5A

IL = +7A

-5A +7A

LOCAL

REMOTE

(Strong

Source)

(Weak

Source)

F = 2A

Heavy

load

High-resistance

ground fault

Figure 3-7. Polar diagram,

(shows how the RFL 9300’s “rainbow” characteristic provides proper tripping for high-resistance ground faults)

Main Page

Table of Contents5
List of Illustrations9
Section 1: Product Information21
Section 2: System Operation39
Introduction39
System Initialization39
Figure 2-1. Block Diagram, RFL 9300 Charge Comparison System (Two Terminal)40
Communications Controller Module42
Channel Impairment Characteristics44
Table 2-1. Valid Hot-Standby Configurations44
Supervisor Controller47
Auxiliary Current Transformer (Act)50
Phase Controllers50
Figure 2-2. Logic Diagram, Composite Fault Detector52
Figure 2-3. Logic Diagram, Strong-Feed Trips (for 2- and 3- Terminal Systems)53
Figure 2-4. Differential Characteristics for 9300 in 2- and 3- Terminal Modes54
Figure 2-5. Logic Diagram, Weak-Feed Trip (for 2- and 3- Terminal Systems)56
Figure 2-6. Logic Diagram, Switch-Into-Fault with Communications (2- and 3- Terminal Systems)57
Figure 2-7. Logic Diagram, Ultra High-Speed Trip58
Figure 2-8. Logic Diagram for Open Conductor and Loss of Load Algorithm59
Figure 2-9. Logic Diagram, Stub-Bus Applications61
Backup Mode Operation63
Figure 2-10. Logic Diagram, Switch-Into-Fault Without Communications63
Direct Transfer Trip (Dtt)64
Display Controller64
Figure 2-11. Logic Diagram, Trip Seal-In66
Figure 2-12. Logic Diagram, DTT Trip Seal-In67
Oscillography Board68
Irig-B68
Diagnostics68
Section 3: Applications70
Introduction70
Series Compensated Lines70
Figure 3-1. Voltage Inversion71
Figure 3-2. Phase Unbalance71
Very Short Lines72
Figure 3-3. High Source-To-Line Impedance Ratio72
Effect of Infeed/Outfeed73
Strong Bus Tie73
Figure 3-4. Effect of Infeed/Outfeed73
Figure 3-5. Strong Bus Tie73
High-Resistance Ground Fault74
Figure 3-6. High-Resistance Ground Fault with Heavy Through-Load, Causing an Outfeed Condition74
Figure 3-7. Polar Diagram74
Prefault Load Subtraction75
Figure 3-8. Prefault Load Subtraction Eliminates Generator Angles76
Figure 3-9. Currents before Pre-Fault Subtraction77
Figure 3-10. Currents after Pre-Fault Subtraction77
Ultra High-Speed Tripping78
Figure 3- 11. Operation of the RFL 9300'S UHS Circuit During an Internal Fault79
Figure 3-12. Operation of the RFL 9300'S UHS Circuit During and External Fault79
Saturated Main Current Transformers80
Figure 3-13. Saturated Main Current Transformers During Close-In Internal Fault80
Figure 3-14. External Fault with very Severe CT Saturation at One End82
Weak Infeed Applications84
Figure 3-15. Weak Infeed Application84
Reclose Blocking for Three-Phase Faults85
Underground Cables85
Figure 3-16. Double Line-To-Ground (DLG) Fault86
Stub-Bus Protection87
Figure 3-17. Sub-Bus Protection88
Tapped Load89
Figure 3-18. Typical Tapped Line Application89
Figure 3-19. Transformer In-Rush90
Figure 3-20. Zero-Sequence Current Flows through Transformer91
Figure 3-21. Typical Tapped Line Application91
Open Conductor with Single Line-To-Ground Fault94
Figure 3-22. Open Conductor with Two Single-Line-To-Ground Faults (OC/2-SLG)94
Figure 3-23. Open Conductor with One Single-Line-To-Ground Fault (OC/SLG)95
SLG Fault Occurring on the Load Sending End Side of the Open Conductor96
SLG Fault Occurring on the Load Receiving End Side of the Open Conductor97
Open Conductor Without Single Line-To-Ground Fault98
Figure 3-26. Open Conductor Without Single-Line-To-Ground Fault98
Figure 3-27. Possible Miscoordination of Loss-Of-Load Plus Zone 2 Timer99
Section 4: Setting Guidelines100
Introduction100
Programmable Parameters100
Table 4-1. Programmable Parameters, RFL 9300 Two-Terminal Charge Comparison System101
Table 4-2. Programmable Parameters, RFL 9300 Three-Terminal Charge Comparison System102
Section 5: Installation114
Introduction114
Unpacking114
Mounting115
Figure 5-1. Mounting Dimensions of RFL 9300 Chassis Without Single Pole Option116
Figure 5-2. Mounting Dimensions of RFL 9300 Chassis with Single Pole Option117
Ventilation118
Electrical Connections118
Figure 5-3. Rear View, Typical RFL 9300 Charge Comparison System119
Figure 5-4. Electrical Connections between RFL 9300 and Current Transformers on Protected Line120
Figure 5-5. Electrical Connections between RFL 9300 with Optional Test Switch Chassis and Current Transformers on Protected Line121
Figure 5-6. Overview of a Typical 9300 Two-Terminal Installation122
Figure 5-7. Overview of a Typical RFL 9300 Three-Terminal Installation122
Modem Connections123
Fiber Optic Connections124
Direct Digital Connections124
Irig-B Clock Connections124
Table 5-1. Pin Assignment for DC-37 Connector on RFL 93 DD I/O Direct Digital I/O Module125
Section 6: Familiarization126
Introduction126
Controls and Indicators126
Start-Up Procedures126
Figure 6-1. Controls and Indicators, Typical Three-Terminal RFL 9300 Charge Comparison System127
Table 6-1. Controls and Indicators, Typical Three-Terminal RFL 9300 Charge Comparison System128
Figure 6-2. the RFL 9300 Keypad129
Table 6-2. Keypad Functions, RFL 9300 Charge Comparison System129
Table 6-3. RFL 9300 Module, General Information130
Figure 6-3. RFL 9300 Module Position Numbers131
Display Modes139
Table 6-4. Alarm Codes for Two-Terminal and Three-Terminal RFL 9300 Charge Comparison System140
Table 6-5. READ Mode Parameters for RFL 9300 Two-Terminal Charge Comparison Systems144
Table 6-6. READ Mode Parameters for RFL 9300 Three-Terminal Charge Comparison Systems146
Table 6-7. STARTUP Mode Parameters for RFL 9300 Two-Terminal Charge Comparison Systems151
Table 6-8. STARTUP Mode Parameters for RFL 9300 Three-Terminal Charge Comparison Systems151
Table 6-9. Programmable Parameters, RFL 9300 Two-Terminal Charge Comparison System153
Table 6-10. Programmable Parameters, RFL 9300 Three-Terminal Charge Comparison System154
Accessing the Rfl 9300 from a Pc or Terminal157
Figure 6-4. Front Panel RS-232 Cable Connections157
Figure 6-5. Cable Connections between RFL 9300 and PC or Terminal Using XON/XOFF Handshaking158
Figure 6-6. APRIL Commands for Use with RFL 9300 (for Two-Terminal and Three-Terminal Mode)160
Figure 6-7. Typical Alarm Display for Two-Terminal Mode161
Figure 6-8. Typical Alarm Display for Three-Terminal Mode162
Figure 6-9. Typical Values Display for Two-Terminal Mode164
Figure 6-10. Typical Values Display for Three-Terminal Mode164
Figure 6-11. Typical Read Settings Menu for Two-Terminal Single-Pole Mode166
Figure 6-12. Typical Read Settings Menu for Two-Terminal Three-Pole Mode167
Figure 6-13. Typical Read Settings Menu for Three-Terminal Single-Pole Mode168
Figure 6-14. Typical Read Settings Menu for Three-Terminal Three-Pole Mode168
Figure 6-15. Typical Configuration and Software Version Display for Two-Terminal and Three-Terminal Systems169
Figure 6-16. Typical Remote Parameters Display for a Two-Terminal Single-Pole System170
Figure 6-17. Typical Remote Parameters Display for a Two-Terminal Three-Pole System170
Figure 6-18. Typical Remote Parameters Display for a Three-Terminal Single-Pole System171
Figure 6-19. Typical Remote Parameters Display for a Three-Terminal Three-Pole System172
Figure 6-20. Typical UPDATE Screen for a Two-Terminal System176
Figure 6-21. Typical UPDATE Screen for a Three-Terminal System176
Figure 6- 22. Sequence of Events Menu177
Figure 6-23. Typical Alarm Sequence of Events Display178
Figure 6-24. Typical Alarm Sequence of Events Display178
Figure 6-25. Typical Trip Sequence of Events Display179
Figure 6-26. Typical Oscillography Data Table179
Figure 6-27. a Typical Oscillography Data Plot181
Figure 6-28. Typical Programming Menu182
Figure 6-29. Typical Parameter Settings List for a Three-Terminal System183
Rfl 9300 Addressing186
Figure 6-30. a Typical Two-Terminal Installation Where Addressing Is Required186
Figure 6-31. a Typical Two-Terminal Installation Where Addressing Is Not Required187
Figure 6-32. Typical RFL 9300 Three-Terminal Addressing Scheme188
DESCRIPTION of INSTANTANEOUS OVERCURRENT BACKUP TRIP ALGORITHM and INVERSE TIME OVERCURRENT BACKUP TRIP ALGORITHM189
Time-Overcurrent Curve Equations192
Section 7: Laboratory Acceptance Tests202
Introduction202
Equipment Requirements202
System Setup203
Figure 7-1. Back-To-Back Relay, Test Setups204
Test Procedures205
Figure 7-2. Test Connections Simulating an External A-G Fault209
Figure 7-3. Test Connections Simulating an External A-B Fault211
Figure 7-4. Test Connections Simulating an External Three-Phase Fault211
Figure 7-5. Phasor Diagram, Single-Phase Test Simulation of an External Three-Phase Fault212
Figure 7-6. Phasor Diagram, Real External Three-Phase Fault212
Figure 7-7. Test Connections Simulating an Internal A-G Fault213
Figure 7-8. Test Connections Simulating an Internal A-B Fault216
Figure 7-9. Test Connections Simulating an Internal Three-Phase Fault217
Figure 7-10. Test Connections Simulating an Internal A-G Fault with Weak Infeed at the Right Terminal218
Figure 7-11. Test Connections Simulating an Internal A-G Fault with Breaker Open at the Right Terminal220
Figure 7-12. Test Connections for Oscillography Test222
Figure 7-13. Oscillography Test Data Plot223
Section 8: Field Commissioning224
Introduction225
SINGLE-RELAY TESTS (Optional)225
Figure 8-1. Single Relay Test Setups227
Table 8-1. Programmable Parameters, RFL 9300 Two-Terminal Charge Comparison System231
Table 8-2. Programmable Parameters, RFL 9300 Three-Terminal Charge Comparison System232
Figure 8-2. Test Connections Simulating an Internal A-G Fault235
Figure 8-3. Test Connections Simulating an Internal A-B Fault238
Figure 8-4. Test Connections Simulating an Internal Three-Phase Fault239
Verification of End-To-End Communications241
Table 8-3. Acceptable Received Fiber Optic Power Levels, RFL 9300 Charge Comparison System243
Startup Mode245
Table 8-4. STARTUP Mode Parameters for RFL 9300 Two-Terminal Charge Comparison Systems248
Table 8-5. STARTUP Mode Parameters for RFL 300 Three-Terminal Charge Comparison Systems248
Figure 8-5. Electrical Connections between RFL 9300 and Current Transformers on Protected Line250
Figure 8-6. Correctly Wired Two-Terminal System254
Figure 8-7. Phase Inversion at Remote 1 Relay254
Figure 8-8. Phase Inversion at Local Relay255
Figure 8-9. Correctly Wired Three-Terminal System256
Figure 8-12. Phase Inversion at Local Station259
Final Commissioning261
Section 9: Display Module262
Introduction262
Display Controller Board262
Figure 9-1. RFL 9300 Display Module for Horizontal Chassis262
Table 9-1. RFL 93B Display Module, General Information263
Figure 9-2. Controls and Indicators for Display Controller Board, Used in RFL 9300 Display Module264
Oscillography Board267
Figure 9-3. Controls and Indicators for Oscillography Board, Used in RFL 93B DISPLAY Module268
Front Panel270
Figure 9-4. Component Locator Drawing for Display Controller Board, Used in RFL 9300 Display Module273
Description274
Table 9-3. Replaceable Parts for Oscillography Board, Used in RFL 9300 Display Modules (Assembly No. 106330)274
Description275
Figure 9-5. Component Locator Drawing for Oscillography Board, Used in RFL 9300 Display Module276
Description277
Table 9-4. Replaceable Parts for Front Panel Assembly, Used in RFL 9300 Display Module (Assembly No. 106335)277
Figure 9-6. Component Locator Drawing for Front Panel Assembly, Used in RFL 9300 Display Module278
Figure 9-7. Oscillography Board, Part of RFL 9300 Display Module (Assembly No. 106330; Schematic No. D-106764-A)279
Figure 10-1. RFL 9300 Supervisor Controller Module280
Figure 10-2. Controls and Indicators, RFL 9300 Supervisor Controller Module281
Figure 10-3. Component Locator Drawing, Supervisor Controller Modules for RFL 9300291
Figure 10-4. Supervisor Controller Module for RFL 9300 Charge Comparison System292
Figure 11-1. RFL 93B ACT I/O Auxiliary Current Transformer I/O Module293
Figure 11-2. Controls and Indicators, RFL 93B ACT I/O Auxiliary Current Transformer I/O Module294
Figure 11-3. Block Diagram, RFL 93B ACT I/O Auxiliary Current Transformer I/O Module295
Table 11-1. Replaceable Parts, RFL 93B ACT-5 5-Ampere Auxiliary Current Transformer to I/O Module296
Figure 11-4. Component Locator Drawing, RFL 93B ACT-5 5-Ampere Auxiliary Current Transformer I/O Module298
Figure 11-5. RFL 93B ACT-5 5-Ampere Auxiliary Current Transformer I/O Module (Assembly No. 106345; Schematic No. D-105814, Rev. C)299
Figure 12-1. RFL 9300 Phase Controller Module301
Figure 12-2. Controls and Indicators, RFL 9300 Phase Controller Modules302
Table 12-1. Replaceable Parts, Phase Controller Modules for RFL 9300 Charge Comparison System305
Figure 12-3. Component Locator Drawing, Phase Controller Modules for RFL 9300 Charge Comparison System307
Figure 12-4. Phase Controller Modules for RFL 9300 Charge Comparison System308
Figure 13-1. RFL 9300 Communications Controller Module309
Figure 13-2. Controls and Indicators, RFL 9300 Communications Controller Module310
Figure 13-3. Block Diagram, RFL 9300 Communications Controller Module312
Figure 13-4. Transmitter Timing Diagram, RFL 9300 Communications Controller Module315
Figure 13-5. Receiver Timing Diagram, RFL 9300 Communications Controller Module316
Figure 13-6. Logic Diagram for Programmable Logic Device U24318
Table 13-1. Replaceable Parts, Communications Controller Modules for RFL 9300 Charge Comparison System319
Figure 13-7. Component Locator Drawing, Communications Controller Module for RFL 9300321
Figure 13-8. Communications Controller Modules for RFL 9300 Charge Comparison System322
Figure 14-1. RFL 9300 Modem Module323
Figure 14-2. Controls and Indicators, RFL 9300 Modem Module324
Table 14-1. Replaceable Parts, Modem Modules for RFL 9300 Charge Comparison System328
Figure 14-3. Component Locator Drawing, Modem Module for RFL 9300 Charge Comparison System330
Figure 14-4. Modem Module for RFL 9300 Charge Comparison System331
103829, Rev. B)331
Section 15: Line Coupler I/O Module333
Description333
Controls and Indicators333
Figure 15-1. RFL 93 LC I/O Line Couple I/O Module333
Theory of Operation334
Table 15-1. Replaceable Parts, RFL 93 LC I/O Line Coupler I/O Module334
Figure 15-2. Component Locator Drawing, RFL 93 LC I/O Line Couple I/O Module335
Figure 15-3. RFL 93 LC I/O Line Coupler I/O Module336
Section 16: Direct Digital Interface I/O Module337
Description337
Controls and Indicators337
Figure 16-1. RFL 93 DD I/O Direct Digital Interface I/O Module337
Figure 16-2. Controls and Indicators, RFL 93 DD Direct Digital I/O Module338
Theory of Operation339
Table 16-1. Replaceable Parts, RFL 93 DD I/O Direct Digital Interface I/O Module340
Figure 16-3. Component Locator Drawing, RFL 93 DD I/O Direct Digital I/O Module341
Figure 16-4. RFL 93 DD I/O Direct Digital I/O Module (Assembly No. 103830-1; Schematic No. D-103834-1, Rev. A)342
Section 17: Single Width Fiber Optic Transceiver Module343
Introduction343
Figure 17-1. RFL 93 B FT/FR Single Width Fiber Optic Transceiver Module343
Description344
Specifications344
Controls and Indicators346
Figure 17-2. Controls and Indicators, RFL 93B FT/FR Single Width Fiber Optic Transceiver Mode347
Theory of Operation348
Figure 17-3. Block Diagram, RFL 93B FT/FR Single Width Fiber Optic Transceiver Module349
Figure 17-4. RFL 9300 Fiber Optics Hot Standby Signal Routing Diagram350
Table 17-1. Replaceable Parts, RFL 93B FT/FR Single Width Fiber Optic Transceiver Module351
Figure 17-5. Component Locator Drawing, RFL 93B FT/FR Single Width Fiber Optic Transceiver Module353
Figure 17-6. RFL 93 FT/FR Singlewidth Fiber Optic Transceiver Module (Assembly No. 106360; Schematic No. D- 105849, Rev. B)354
Section 18: Single Width Fiber Optic I/O Module355
Introduction356
Figure 18-1. Typical RFL 93 FT/FR Single Width Fiber Optic I/O Module356
Description357
Specifications357
Table 18-1. Differences between Single Width Fiber Optic I/O Modules357
Controls and Indicators358
Figure 18-2. Controls and Indicators, RFL 93 FT/FR I/O-8M Single Width Fiber Optic I/O Module358
Figure 18-3. Controls and Indicators, RFL 93 FT/FR I/O-13S and 13 M Single Width Fiber Optic I/O Modules359
Figure 18-4. Controls and Indicators, RFL 93 FT/FR I/O-13SL and 15SL Single Width Fiber Optic I/O Modules360
Theory of Operation361
Figure 18-5. Block Diagram, RFL 93 FT/FR I/O-8M 850 Nm Multimode Fiber Optic I/O Module361
Figure 18-6. Block Diagram, RFL 93 FT/FR-13M (Multimode) and RFL 93 FT/FR-S (Singlemode) 1300-Nm Fiber Optic I/O Module363
Figure 18-7. Block Diagram, RFL 93 FT/FR 13SL (1300-Nm Singlemode) and RFL 93 FT/FR 15SL (1550-Nm Singlemode)365
Table 18-2. Replaceable Parts, RFL 93 FT/FR I/O-8M Singlewidth Fiber Optic I/O Module367
Figure 18-8. Component Locator Drawing, RFL 93 FT/FR I/O-8M 850-Nm Multimode Singlewidth Fiber Optic I/O Module (Assembly No. 105850; Drawing No. 105853-A)369
Figure 18-9. RFL 93 FT/FR Singlewidth Fiber Optic I/O Module -8M (Assembly No. 105850; Schematic No. D-105854, Rev. D)370
Table 18-3. Replaceable Parts, RFL 93 FT/FR I/O Singlewidth Fiber Optic I/O Modules371
Figure 18-11. RFL 93 FT/FR Singlewidth Fiber Optic I/O Modules, -13M (Assembly No. 105855; Schematic No. D- 105864, Rev. A), -13S (Assembly No. 105860; Schematic No. D-105864, Rev. A)374
Table 18-4. Replaceable Parts, Singlewidth Fiber Optic I/O Modules375
Figure 18-12. Component Locator Drawing, RFL 93 FT/FR I/O-13SL and RFL 93 FT/FR I/O-15SL377
Figure 18-13. RFL 93 FT/FR Singlewidth Fiber Optic I/O Modules, -13SL (Assembly No. 105865; Schematic No. D- 105869, Rev. A), -15SL (Assembly No. 105870; Schematic No. D-105869, Rev. A)378
Section 19: Power Supply Module379
Description379
Figure 19-1. Typical RFL 9300 Power Supply Module379
Specifications380
Table 19-1. 9300 Power Supply Specifications380
Theory of Operation381
Table 19-2. Replaceable Parts, 50-Watt Power Supply Module for RFL 9300 Charge Comparison System382
Figure 19-2. Component Locator Drawings, 50-Watt Power Supply Module384
Figure 19-3. 9300 PS 48/125 DC Power Supply Module for RFL 9300 Charge Comparison System385
106715-1; Schematic No. 106719-E)385
Section 20: Relay I/O Module387
Description387
Controls and Indicators387
Figure 20-1. RFL 93B Relay I/O Module, Rear Panel387
Figure 20-2. Rear Panel Connectors and Terminal Blocks, RFL 93B Relay I/O Module388
Figure 20-3. Controls and Indicators, Power/Rf-232 Board for RFL 93B Relay I/O Module389
Theory of Operation391
Table 20-1. Replaceable Parts, RFL 93B Relay I/O, Power/Rs-232 Board393
Figure 20-4. Component Locator Drawing, RFL 93B Relay I/O Module, Power/Rs-232 Board394
Table 20-2. Replaceable Parts, RFL 93 Relay I/O Module, Current Sense Board395
Figure 20-5. Component Locator Drawing, RFL 93B Relay I/O Module, Current Sense Board396
Table 20-3. Replaceable Parts, RFL 93 Relay I/O Module, Relay Output Board397
Figure 20-6. Component Locator Drawing, RFL 93B Relay I/O Module, Relay Output Board398
Figure 20-7. RFL 93B RELAY I/O Module, Power/Rs-232 Board399
Section 21. Alarm I/O Module401
Description401
Controls and Indicators401
Figure 21-1. RFL 93 Alarm I/O Module401
Figure 21-2. Controls and Indicators, RFL 93 Alarm I/O Module402
Theory of Operation404
Table 21-1. Replaceable Parts, RFL 93 Alarm I/O Module405
Table 21-2. Replaceable Parts, RFL 93 Alarm I/O Module406
Figure 21-3. Component Locator Drawing, RFL 93 Alarm I/O Module408
Section 22. Short Haul Fiber Interface Module and Fiber Service Unit409
Introduction410
Figure 22-1. Front Panel View of RFL 93 SH FIBER Short Haul Interface Module and RFL FSU Fiber Service Unit410
Short Haul Fiber Interface Module411
Table 22-1. General Information, Short Haul Fiber Interface Module411
Figure 22-2. Controls and Indicators, RFL 93 SHFI Short Haul Fiber Interface Module412
Fiber Service Unit413
Figure 22-3. Typical Fiber Service Unit Installation413
Table 22-2. Replaceable Parts, RFL 93 SHFI Short Haul Fiber Interface Module414
Figure 22-4. Component Locator Drawing, RFL 93 Short Haul Fiber Interface Module (Assembly No. 107500)416
Figure 22-5. Schematic, RFL 93 Short Haul Fiber Module (3 Sheets) (Assembly No. 107500; Schematic No. D-107504-C)417
Section 23: G.703 Interface I/O Module419
Description419
Controls and Indicators419
Figure 23-1. RFL 93 G.703 Interface I/O Module419
Figure 23-2. Controls and Indicators, RFL 93 G.703 Interface I/O Module420
Theory of Operation421
Figure 23-3. Setting J5 for Normal or Loops Operation422
Table 23-1. Replaceable Parts, RFL 93 G.703 Interface I/O Module424
Figure 23-4. Component Locator Drawing, RFL 93 G. 703 Interface I/O Module426
Figure 23-5. Schematic, RFL 93 G.703 Module (Assembly No. 106730; Drawing No. D-106734-B)427
Section 24: Single Pole Chassis429
Description429
Conrols and Indicators429
Figure 24-1. Typical RFL 9300 Single Pole Chassis, Front Panel View429
Table 24-1. RFL 9300 Single Pole Chassis, General Information429
Figure 24-2. Typical RFL 9300 Single Pole Chassis, Front Panel View Showing LED Indicators430
Figure 24-3. Typical RFL 9300 Single Pole Chassis, Rear Panel View431
Theory of Operation - Hardware434
Theory of Operation - Software436
Figure 24-4. Target Message Word Sent from the Display Controller to the Single-Pole Chassis436
Figure 24-5. 16-Bit Status Messages Transmitted by the Single-Pole Logic to the Supervisor at 250Ms Intervals437
Table 24-2. Replaceable Parts, RFL 9300 Single Pole Chassis440
Figure 24-6. Component Locator Drawing, RFL 9300 Single Pole Chassis, Main Circuit Board441
Table 24-3. Replaceable Parts, RFL 9300 Single Pole Chassis, Rear Panel Assembly443
Figure 24-8. Component Locator Drawing, RFL 9300 Single Pole Chassis, Rear Panel444
Figure 24-9. Schematic, 9300 Single Pole Chassis, Rear Panel (Drawing No. D-106709-C)445
Section 25. Chassis and Front Panel Rs-232 Module447
Description447
Figure 25-1. Typical RFL 9300 Chassis447
Figure 25-2. Block Diagram of RS-232 Front Board448
Table 25-1. Replaceable Parts, RFL 93 INTER Interconnected Motherboard449
Figure 25-3. Component Locator Drawing, RFL 93 INTER Interconnect Motherboard450
Figure 25-4. RFL 93 INTER Interconnect Motherboard (Assembly No. 103905-1; Schematic No. D-103909-1-D)451
Figure 25-5. Component Locator Drawing, RFL 9300 Front Panel RS-232 Module452
Table 25-2. Replaceable Parts, RFL 9300 Front Panel RS-232 Interface Module452
Figure 25-6. RS-232 Front Panel Interface (Assembly No. 106755; Schematic No. C-106759-B)453
Section 26: Expansion Chassis455
Figure 26-1. Typical RFL 9300 Expansion Chassis, Rear View455
Table 26-1. Expansion Chassis, General Information455
Figure 26-2. Component Locator Drawing, RFL 9300 Expansion Chassis Power Supply (Assembly No. 106350)456
Table 26-2. Replaceable Parts, RFL 9300 Expansion Chassis Power Supply456
Figure 26-3. Schematic, Power Converter I/O - 250 VDC, for RFL 9300 Charge Comparison System457
Section 27. Protocol Converters459
Description459
Configurations459
Table 27-1. Protocol Converters Currently Available459
Converter Operation460
9300 Setup460
Converter Address Selection460
Specifications460
Connections461
Cables461
Terminal Block Pinouts461
Block Diagram462
Figure 27-1. Protocol Converter Block Diagram462
MODBUS MAP (Version A3, M13, 9/12/01)463
Table 27-2. Modbus Map463
Table 27-3. Modbus RTU Format Table467
Dnp Profile Document468
DNP POINT LIST (Version A1,M13,8/3/01)470
Table 27-4. POINT LIST FOR: 16 Bit Analog Without Flag (Object 30 Var 4)470
Table 27-5. POINT LIST FOR: Binary Input Change with Tim (Object 02 Var 2)471
Table 27-6. POINT LIST FOR: 16 Bit Analog with Time (Object 32 Var 4)472
Table 27-7. POINT LIST FOR: 16 Bit Analog Output Status (Object 40 Var 2)472
Table 27-8. Format Table473
Section 28. Maintenance475
Introduction475
Alarm Codes475
Removal and Replacement477
Fuse Replacement479
Corrective Maintenance480
How to Arrange for Servicing480
Table 28-1. Fuse Replacement Data, RFL 9300 Power Supply Module480
Instructions for Converting a 3-Terminal 9300 to a 2-Terminal 9300481
Section 29: Modem Application Information483
Introduction483
Transmitter Levels and Wiring483
Receiver Levels and Wiring483
S/N Ratio Vs Dependability483
Figure 29-1. RFL 9300 Modem Dependability Versus S/N Ratio (Measured)484
Telephone Service Requirements485
Microwave, Radio, and T1 Analog Channels485
Channel Routing Vs Dependability485
Modem Security485
Squelch Rules485
Figure 29-2. RFL 9300 Probability of Passing False Words (Theoretical)486
Figure 29-3. RFL 9300 Modem Security (Theoretical)487
Channel Delay Limits488
Test Points489
Section 30: Glossary of Terms491
Section 31: Index497
Section 32: Schematics503

RFL Electronics RFL 9300 - High-Resistance Ground Fault; Figure 3-6. High-Resistance Ground Fault with Heavy Through-Load, Causing an Outfeed Condition; Figure 3-7. Polar Diagram

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