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Date Code 20060320 Instruction Manual SEL-311C Relay
Table of Contents
Clearing SER Report ........................................................................................................................... 12.30
Example Sequential Events Recorder (SER) Report................................................................................... 12.31
Section 13: Testing and Troubleshooting
Overview ....................................................................................................................................................... 13.1
Testing Philosophy ........................................................................................................................................ 13.2
Acceptance Testing ............................................................................................................................... 13.2
Commissioning Testing ......................................................................................................................... 13.2
Maintenance Testing ............................................................................................................................. 13.3
Testing Methods and Tools............................................................................................................................ 13.5
Test Features Provided by the Relay ..................................................................................................... 13.5
Low-Level Test Interface ....................................................................................................................... 13.6
Test Methods ......................................................................................................................................... 13.6
Relay Testing ................................................................................................................................................. 13.9
Equipment Required .............................................................................................................................. 13.9
Checkout Procedure .............................................................................................................................. 13.9
Output Contact Explanation ................................................................................................................ 13.14
Target LED Explanation ...................................................................................................................... 13.14
Front-Panel LCD Explanation ............................................................................................................. 13.14
Test Setup .................................................................................................................................................... 13.15
Test Source Connections ..................................................................................................................... 13.15
Serial Communications Equipment Connections ................................................................................ 13.19
Test Procedures............................................................................................................................................ 13.20
Overcurrent Elements .......................................................................................................................... 13.20
Negative-Sequence Directional Element ............................................................................................. 13.22
Phase Mho Distance Elements ............................................................................................................ 13.33
Ground Mho Distance Elements ......................................................................................................... 13.39
Troubleshooting Test Results ...................................................................................................................... 13.56
Relay Self-Tests........................................................................................................................................... 13.58
Relay Troubleshooting ................................................................................................................................ 13.60
Inspection Procedure ........................................................................................................................... 13.60
Relay Calibration......................................................................................................................................... 13.61
Factory Assistance....................................................................................................................................... 13.62
Section 14: Application Settings for SEL-221 Series Relays
Overview ....................................................................................................................................................... 14.1
SEL-221G to SEL-311C Settings Conversion Guide.................................................................................... 14.2
Key Differences Between the SEL-221G and the SEL-311C ............................................................... 14.3
Application Settings .............................................................................................................................. 14.3
Convert SEL-221G Primary Quantities to SEL-311C Secondary Quantities ....................................... 14.4
Convert SEL-221G Relay Settings to SEL-311C Settings .................................................................... 14.4
Convert SEL-221G Output Mask Logic Settings to SEL
OGIC Control Equations ............................... 14.6
SEL-221G-5 to SEL-311C Settings Conversion Guide .............................................................................. 14.10
Key Differences Between the SEL-221G-5 and the SEL-311C ......................................................... 14.11
Application Settings ............................................................................................................................ 14.11
Convert SEL-221G-5 Primary Quantities to SEL-311C Secondary Quantities .................................. 14.12
Convert SEL-221G-5 Settings to SEL-311C Settings ......................................................................... 14.12
Convert SEL-221G-5 Output Mask Logic Settings to SEL
OGIC Control Equations .......................... 14.14
SEL-221H to SEL-311C Settings Conversion Guide..................................................................................14.18
Application Settings ............................................................................................................................ 14.19
Convert SEL-221H Primary Quantities to SEL-311C Secondary Quantities ..................................... 14.19
Convert SEL-221H Settings to SEL-311C Settings ............................................................................ 14.19
Convert SEL-221H Output Mask Logic Settings to SEL
OGIC Control Equations ............................. 14.21
SEL-221F to SEL-311C Settings Conversion Guide ..................................................................................14.25
Application Settings ............................................................................................................................ 14.26
Convert SEL-221F Primary Quantities to SEL-311C Secondary Quantities ...................................... 14.26
Convert SEL-221F Settings to SEL-311C Settings ............................................................................. 14.26
Convert SEL-221F Output Mask Logic Settings to SEL
OGIC Control Equations .............................. 14.28
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