Schweitzer Engineering Laboratories SEL-421-4 - Metering

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SEL-421 Relay Instruction Manual Date Code 20171021
List of Figures
Figure 2.43 Topology 1.................................................................................................................................2.43
Figure 2.44 Topology 2.................................................................................................................................2.43
Figure 2.45 Topology 3.................................................................................................................................2.44
Figure 2.46 Remote Module Interface ..........................................................................................................2.45
Figure 2.47 SEL-421 to Computer—D-Subminiature 9-Pin Connector.......................................................2.47
Figure 2.48 Example Ethernet Panel With Fiber-Optic Ports.......................................................................2.48
Figure 2.49 Two 100BASE-FX Port Configuration on Ports 5A and 5B.....................................................2.49
Figure 2.50 Two 10/100BASE-T Port Configuration on Ports 5A and 5B ..................................................2.49
Figure 2.51 100BASE-FX and 10/100BASE-T Port Configuration on Ports 5A and 5B ............................2.49
Figure 2.52 Two 100BASE-FX Port Configuration on Ports 5C and 5D.....................................................2.49
Figure 2.53 Two 10/100BASE-T Port Configuration on Ports 5C and 5D ..................................................2.49
Figure 2.54 100BASE-FX and 10/100BASE-T Port Configuration on Ports 5C and 5D ............................2.49
Figure 2.55 Typical External AC/DC Connections—Single Circuit Breaker ..............................................2.51
Figure 2.56 Typical External AC/DC Connections—Dual Circuit Breaker.................................................2.52
Figure 2.57 SEL-421 Example Wiring Diagram Using the Auxiliary TRIP/CLOSE Pushbuttons .............2.53
Figure 3.1 Low-Level Test Interface ............................................................................................................3.2
Figure 3.2 Test Connections Using Three Voltage and Three Current Sources...........................................3.4
Figure 3.3 Test Connections Using Two Current Sources for Phase-to-Phase, Phase-to-Ground, and
Two-Phase-to-Ground Faults...................................................................................................3.5
Figure 3.4 Test Connections Using Two Current Sources for Three-Phase Faults ......................................3.6
Figure 3.5 Test Connections Using a Single Current Source for a Phase-to-Ground Fault..........................3.7
Figure 3.6 Test Connections Using a Single Current Source for a Phase-to-Phase Fault ............................3.8
Figure 3.7 Negative-Sequence Instantaneous Overcurrent Element Settings: QuickSet............................3.10
Figure 3.8 Uploading Group 1 Settings to the SEL-421.............................................................................3.11
Figure 3.9 ELEMENT SEARCH Screen....................................................................................................3.11
Figure 3.10 RELAY ELEMENTS Screen Containing Element 50Q1 .........................................................3.12
Figure 3.11 Group 1 Relay Configuration Settings: QuickSet .....................................................................3.14
Figure 3.12 Breaker 1 Breaker Monitor Settings: QuickSet.........................................................................3.15
Figure 3.13 Group 1 Line Configuration Settings: QuickSet .......................................................................3.16
Figure 3.14 Directional Settings: QuickSet ..................................................................................................3.17
Figure 3.15 Uploading Group 1 and Breaker Monitor Settings to the SEL-421 ..........................................3.18
Figure 3.16 RELAY ELEMENTS LCD Screen Containing Elements F32Q and R32Q.....................................3.18
Figure 3.17 Finding Phase-to-Phase Test Quantities ....................................................................................3.20
Figure 3.18 Phase-Distance Elements Settings: QuickSet............................................................................3.21
Figure 3.19 RELAY ELEMENTS LCD Screen Containing Element MBC2 ..............................................3.22
Figure 4.1 Sample ROTATING DISPLAY ..................................................................................................4.3
Figure 4.2 METER MENU Screens .............................................................................................................4.4
Figure 4.3 METER SUBMENU ...................................................................................................................4.5
Figure 4.4 RMS, FUND, and DEMAND Metering Screens ........................................................................4.6
Figure 4.5 ENERGY, MAX/MIN, and SYNCH CHECK Metering Screens...............................................4.7
Figure 4.6 EVENT SUMMARY Screens.....................................................................................................4.8
Figure 4.7 BREAKER MONITOR Report Screens......................................................................................4.8
Figure 4.8 VIEW CONFIGURATION Sample Screens...............................................................................4.9
Figure 4.9 Factory-Default Front-Panel Target Areas (16 or 24 LEDs).....................................................4.10
Figure 4.10 Operator Control Pushbuttons and LEDs (8 or 12 Pushbuttons)...............................................4.13
Figure 4.11 Factory-Default Operator Control Pushbuttons.........................................................................4.15
Figure 4.12 Bay Control Screen Selected for Rotating Display ...................................................................4.16
Figure 4.13 Configuring PB1_HMI for Direct Bay Control Access ............................................................4.17
Figure 4.14 Pole Discrepancy .......................................................................................................................4.18
Figure 4.15 Bay With Ground Switch (Option 1).........................................................................................4.19
Figure 4.16 Bay Without Ground Switch (Option 2)....................................................................................4.19
Figure 4.17 Tie Breaker Bay (Option 3) .......................................................................................................4.20
Figure 4.18 Bay With Ground Switch (Option 4).........................................................................................4.20
Figure 4.19 Bay Without Ground Switch (Option 5)....................................................................................4.21
Figure 4.20 Transfer Bay (Option 6) ............................................................................................................4.21
Figure 4.21 Tie Breaker Bay (Option 7) .......................................................................................................4.22