Schweitzer Engineering Laboratories SEL-311C - Page 7

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Date Code 20060320 Instruction Manual SEL-311C Relay
Table of Contents
Displaying Time-Overcurrent Elements Example ................................................................................ 7.42
Displaying Metering Quantities on the Rotating Default Display ........................................................ 7.43
Displaying Metering Values Example ................................................................................................... 7.46
Displaying Breaker Monitor Output Information on the Rotating Default Display ............................. 7.46
Displaying Breaker Monitor Outputs Example .....................................................................................7.47
Section 8: Breaker Monitor and Metering Functions
Overview ......................................................................................................................................................... 8.1
Breaker Monitor .............................................................................................................................................. 8.2
Breaker Monitor Setting Example ........................................................................................................... 8.4
Breaker Monitor Operation Example ...................................................................................................... 8.6
Breaker Monitor Output ........................................................................................................................ 8.11
View or Reset Breaker Monitor Information ........................................................................................ 8.12
Determination of Relay-Initiated Trips and Externally Initiated Trips ................................................. 8.13
Station DC Battery Monitor .......................................................................................................................... 8.15
DC Under- and Overvoltage Elements .................................................................................................. 8.15
Create Desired Logic for DC Under- and Overvoltage Alarming ........................................................ 8.15
Additional Application .......................................................................................................................... 8.17
View Station DC Battery Voltage .......................................................................................................... 8.17
Analyze Station DC Battery Voltage ..................................................................................................... 8.17
Operation of Station DC Battery Monitor When AC Voltage Is Powering the Relay .......................... 8.19
Demand Metering.......................................................................................................................................... 8.20
Comparison of Thermal and Rolling Demand Meters .......................................................................... 8.20
Demand Meter Settings ......................................................................................................................... 8.24
Demand Current Logic Output Application–Raise Pickup for Unbalance Current .............................. 8.25
View or Reset Demand Metering Information ......................................................................................8.26
Demand Metering Updating and Storage .............................................................................................. 8.27
Energy Metering............................................................................................................................................ 8.28
View or Reset Energy Metering Information ........................................................................................ 8.28
Energy Metering Updating and Storage ................................................................................................ 8.28
Maximum/Minimum Metering...................................................................................................................... 8.29
View or Reset Maximum/Minimum Metering Information .................................................................. 8.29
Maximum/Minimum Metering Updating and Storage .......................................................................... 8.29
Synchrophasor Metering ............................................................................................................................... 8.31
Section 9: Setting the Relay
Overview ......................................................................................................................................................... 9.1
Settings Changes Via the Front Panel ............................................................................................................. 9.2
Settings Changes Via the Serial Port ............................................................................................................... 9.3
Time-Overcurrent Curves................................................................................................................................ 9.5
Relay Word Bits (Used in SEL
OGIC Control Equations) .............................................................................. 9.16
Settings Explanations .................................................................................................................................... 9.33
Identifier Labels .................................................................................................................................... 9.33
Current Transformer Ratios ................................................................................................................... 9.33
Line Settings .......................................................................................................................................... 9.33
Enable Settings ...................................................................................................................................... 9.34
Other System Parameters ...................................................................................................................... 9.34
Settings Sheets............................................................................................................................................... 9.35
Settings Sheets for the SEL-311C Relay
Section 10: Serial Port Communications and Commands
Overview ....................................................................................................................................................... 10.1
Port Connector and Communications Cables................................................................................................ 10.2
IRIG-B ................................................................................................................................................... 10.2
Relay Word Bit TIRIG .......................................................................................................................... 10.3
Relay Word Bit TSOK .......................................................................................................................... 10.3
SEL-311C to Computer ......................................................................................................................... 10.3
SEL-311C to Modem or Other DCE ..................................................................................................... 10.3