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SEL-387-0, -5, -6 Relay Instruction Manual Date Code 20170601
List of Figures
Figure 3.35 IEC Class C Curve (Extremely Inverse): C3........................................................................ 3.74
Figure 3.36 IEC Long-Time Inverse Curve: C4 ...................................................................................... 3.75
Figure 3.37 IEC Short-Time Inverse Curve: C5 ......................................................................................3.76
Figure 4.1 Remote Control Switches Drive Remote Bits RB1 Through RB16 ...................................... 4.3
Figure 4.2 Rotating Selector Switch for Active Setting Group Selection ............................................... 4.6
Figure 4.3 Timed Variables in SEL
OGIC Control Equation Sets ............................................................. 4.9
Figure 4.4 Traditional Latching Relay................................................................................................... 4.10
Figure 4.5 Latch Bits in SEL
OGIC Control Equation Sets..................................................................... 4.10
Figure 4.6 SEL-387 Front-Panel LEDs ................................................................................................. 4.13
Figure 4.7 SEL-387 Trip Logic (TRIP1)............................................................................................... 4.17
Figure 4.8 SEL-387 Close Logic (CLS1).............................................................................................. 4.18
Figure 5.1 SEL-387 Demand Ammeter Functions and Commands ........................................................ 5.6
Figure 5.2 Station DC Battery Monitor Alarm Logic.............................................................................. 5.8
Figure 5.3 Undervoltage and Overvoltage Warning and Alarm Regions ................................................ 5.8
Figure 5.4 Trip Bus Sensing With Relay Input......................................................................................5.10
Figure 5.5 Breaker Contact Wear Curve................................................................................................ 5.10
Figure 5.6 Distribution Feeder Faults Expose Transformer Bank to Through Faults ........................... 5.19
Figure 5.7 Through-Fault Triggering, Duration, and Maximum Current.............................................. 5.20
Figure 5.8 Cumulative I
2
t Alarm (Relay Word bit ISQTAL) ................................................................ 5.21
Figure 7.1 SEL-387 Serial Port Connectors ............................................................................................ 7.2
Figure 7.2 Access Level Relationship ................................................................................................... 7.13
Figure 8.1 SEL-387 Front-Panel User Interface...................................................................................... 8.1
Figure 8.2 Local Control Switch Configured as an ON/OFF Switch.................................................... 8.10
Figure 8.3 Local Control Switch Configured as an OFF/MOMENTARY Switch ................................ 8.11
Figure 8.4 Local Control Switch Configured as an ON/OFF/MOMENTARY Switch ......................... 8.11
Figure 8.5 METER Menu and Display Structure .................................................................................. 8.25
Figure 8.6 EVENTS Display Structure ................................................................................................. 8.26
Figure 8.7 OTHER / BKR Menu and Display Structure ....................................................................... 8.27
Figure 8.8 SET Menu and Display Structure.........................................................................................8.28
Figure 9.1 Example Event Summary....................................................................................................... 9.4
Figure 9.2 Example Winding Event Report............................................................................................. 9.6
Figure 9.3 Example Digital Event Report ............................................................................................... 9.8
Figure 9.4 Example Differential Event Report ......................................................................................9.11
Figure 9.5 Example Raw Winding Event Report .................................................................................. 9.15
Figure 9.6 Derivation of Event Report Current Values and RMS Current Values From Sampled
Current Waveform ............................................................................................................ 9.17
Figure 9.7 Derivation of Phasor RMS Current Values From Event Report Current Values.................. 9.18
Figure 9.8 Example SER Event Report ................................................................................................. 9.19
Figure 10.1 Low-Level Test Interface...................................................................................................... 10.2
Figure 10.2 Relay Part Number and Hardware Identification Sticker..................................................... 10.4
Figure 10.3 Test Connections for Balanced Load With Three-Phase Current Sources........................... 10.9
Figure 10.4 Test Connections for Balanced Load With Two-Phase Current Sources ........................... 10.10
Figure 10.5 Test Connections for Two Single Current Test Sources..................................................... 10.11
Figure 10.6 Percentage Restraint Differential Characteristic ................................................................ 10.20
Figure 10.7 Test Connections for Parallel Current Sources................................................................... 10.27
Figure B.1 Establishing a Connection......................................................................................................B.3
Figure B.2 Determining the Computer Serial Port...................................................................................B.3
Figure B.3 Determining Communications Parameters for the Computer ................................................B.4
Figure B.4 Setting Terminal Emulation ...................................................................................................B.4
Figure B.5 Terminal Emulation Startup Prompt ......................................................................................B.5
Figure B.6 Correcting the Port Setting.....................................................................................................B.5
Figure B.7 Correcting the Communications Parameters..........................................................................B.6
Figure B.8 Preparing HyperTerminal for ID Command Display. ............................................................B.7
Figure B.9 List of Commands Available in SEL
BOOT .............................................................................B.8
Figure B.10 Matching Computer to Relay Parameters ..............................................................................B.9
Figure B.11 Example Receive File Dialog Box .......................................................................................B.10
Figure B.12 Example Filename Identifying Old Firmware Version ........................................................B.10
Figure B.13 Downloading Old Firmware.................................................................................................B.10
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