xiiiList of Figures
Date Code 20080213 Instruction Manual SEL-351A Relay
Figure B.1 Establishing a Connection......................................................................................................B.4
Figure B.2 Determining the Computer Serial Port...................................................................................B.4
Figure B.3 Determining Communications Parameters for the Computer ................................................B.5
Figure B.4 Setting Terminal Emulation ...................................................................................................B.5
Figure B.5 Terminal Emulation Startup Prompt ......................................................................................B.6
Figure B.6 Correcting the Port Setting.....................................................................................................B.6
Figure B.7 Correcting the Communications Parameters..........................................................................B.7
Figure B.8 Preparing HyperTerminal for ID Command Display.............................................................B.8
Figure B.9 List of Commands Available in SEL
BOOT .............................................................................B.9
Figure B.10 Matching Computer to Relay Parameters ............................................................................B.10
Figure B.11 Example Receive File Dialog Box .......................................................................................B.11
Figure B.12 Example Filename Identifying Old Firmware Version ........................................................B.11
Figure B.13 Downloading Old Firmware.................................................................................................B.11
Figure B.14 Selecting New Firmware to Send to the Relay.....................................................................B.13
Figure B.15 Transferring New Firmware to the Relay.............................................................................B.13
Figure B.16 Preparing HyperTerminal for ID Command Display...........................................................B.17
Figure B.17 Establishing an FTP Connection ..........................................................................................B.20
Figure B.18 Alternate Method of Establishing an FTP Connection ........................................................B.21
Figure B.19 Read (Open) File ..................................................................................................................B.21
Figure B.20 Page Cannot Be Displayed Window ....................................................................................B.22
Figure F.1 Minimum Response Time Added to a Negative-Sequence
Time-Overcurrent Element 51QT....................................................................................... F.2
Figure F.2 Distribution Feeder Protective Devices.................................................................................. F.4
Figure F.3 Traditional Phase Coordination.............................................................................................. F.4
Figure F.4 Phase-to-Phase Fault Coordination ........................................................................................ F.5
Figure F.5 Negative-Sequence Overcurrent Element Derived from “Equivalent”
Phase Overcurrent Element, 51EP...................................................................................... F.6
Figure G.1 Result of Rising-Edge Operators on Individual Elements in Setting ER.............................. G.7
Figure G.2 Result of Falling-Edge Operator on a Deasserting Underfrequency Element ...................... G.8
Figure L.1 Phase Reference .....................................................................................................................L.3
Figure L.2 Waveform at Relay Terminals May Have Phase Shift ...........................................................L.4
Figure L.3 Correction of Measured Phase Angle.....................................................................................L.4
Figure L.4 Sample MET PM Command Response................................................................................L.13
Courtesy of NationalSwitchgear.com
To Next Page
Loading...