Sel SEL-421 - Page 24

xxvi List of Figures
SEL-421/SEL-421-1 Relay Date Code 20020501
Figure 5.25 Changing the ACTIVE GROUP. ......................................................................................U.5.23
Figure 5.26 DATE/TIME Screen. ........................................................................................................U.5.24
Figure 5.27 Edit DATE and Edit TIME Screens..................................................................................U.5.24
Figure 5.28 Relay STATUS Screens. ...................................................................................................U.5.25
Figure 5.29 VIEW CONFIGURATION Sample Screens....................................................................U.5.26
Figure 5.30 DISPLAY TEST Screens.................................................................................................. U.5.27
Figure 5.31 RESET ACCESS LEVEL Screen. ...................................................................................U.5.27
Figure 5.32 Sample Status Warning and Trip EVENT SUMMARY Screens. ....................................U.5.28
Figure 5.33 Sample Status Warning in the LCD Message Area. .........................................................U.5.28
Figure 5.34 Factory Default Front-Panel Target Areas........................................................................U.5.30
Figure 5.35 Operator Control Pushbuttons and LEDs. ........................................................................U.5.34
Figure 5.36 Factory Default Operator Control Pushbuttons—Left Side. ............................................U.5.35
Figure 5.37 Factory Default Operator Control Pushbuttons—Right Side. ..........................................U.5.36
Section 6: Testing and Troubleshooting
Figure 6.1 Low-Level Test Interface....................................................................................................U.6.7
Figure 6.2 Test Connections Using Three Voltage and Three Current Sources...................................U.6.9
Figure 6.3 Test Connections Using Two Current Sources for
Phase-to-Phase, Phase-to-Ground, and Two-Phase-to-Ground Faults..........................U.6.10
Figure 6.4 Test Connections Using Two Current Sources for Three-Phase Faults............................ U.6.11
Figure 6.5 Test Connections Using a Single Current Source for a Phase-to-Ground Fault...............U.6.12
Figure 6.6 Test Connections Using a Single Current Source for a Phase-to-Phase Fault. ................U.6.13
Figure 6.7 Sample Targets Display on a Serial Terminal...................................................................U.6.15
Figure 6.8 Viewing Relay Word Bits From the Front-Panel LCD.....................................................U.6.16
Figure 6.9 Setting Pushbutton LED Response:
ACSELERATOR Software.........................................U.6.17
Figure 6.10 Uploading Front-Panel Settings to the SEL-421 Relay. ...................................................U.6.18
Figure 6.11 Setting Main Board Outputs:
ACSELERATOR Software. ..................................................U.6.19
Figure 6.12 Uploading Output Settings to the SEL-421 Relay............................................................U.6.19
Figure 6.13 Checking the 51S1 Overcurrent Element:
ACSELERATOR Software. ..............................U.6.21
Figure 6.14 Setting SER Points and Aliases:
ACSELERATOR Software. .............................................U.6.22
Figure 6.15 Uploading Group 1 and Report Settings to SEL-421 Relay. ............................................U.6.22
Figure 6.16 HMI Tree View:
ACSELERATOR Software. ......................................................................U.6.23
Figure 6.17 SER Report:
ACSELERATOR HMI....................................................................................U.6.23
Figure 6.18 Group 1 Relay Configuration Settings:
ACSELERATOR Software. ..................................U.6.26
Figure 6.19 Negative-Sequence Instantaneous
Overcurrent Element Settings:
ACSELERATOR Software.U.6.26
Figure 6.20 Uploading Group 1 Settings to the SEL-421 Relay..........................................................U.6.26
Figure 6.21 ELEMENT SEARCH Screen...........................................................................................U.6.27
Figure 6.22 RELAY ELEMENTS Screen Containing Element 50Q1.................................................U.6.27
Figure 6.23 Group 1 Relay Configuration Settings:
ACSELERATOR Software. ..................................U.6.29
Figure 6.24 Breaker 1 Breaker Monitor Settings:
ACSELERATOR Software. ......................................U.6.30
Figure 6.25 Group 1 Line Configuration Settings:
ACSELERATOR Software. ....................................U.6.30
Figure 6.26 Directional Settings:
ACSELERATOR Software. ...............................................................U.6.31
Figure 6.27 Uploading Group 1 and
Breaker Monitor Settings to the SEL-421 Relay.U.6.31
Figure 6.28 RELAY ELEMENTS LCD
Screen Containing Elements F32Q and R32Q.U.6.32
Figure 6.29 Finding Phase-to-Phase Test Quantities. ..........................................................................U.6.34
Figure 6.30 Phase Distance Elements Settings:
ACSELERATOR Software. .........................................U.6.36
Figure 6.31 RELAY ELEMENTS LCD Screen Containing Element MBC2......................................U.6.36
Figure 6.32 Relay Status:
ACSELERATOR HMI. ..................................................................................U.6.38
Figure 6.33 Relay Status From a STATUS A Command on a Terminal..............................................U.6.38
Figure 6.34 Compressed ASCII CST Command on a Terminal..........................................................U.6.39
Appendix A: Firmware Versions