P.1.4
SEL-411L Relay Protection Manual Date Code 20151029
Introduction and Specifications
Features
Automation. Take advantage of enhanced automation features that include
programmable elements for local control, remote control, protection
latching, and automation latching. Local metering on the large format
front-panel Liquid Crystal Display (LCD) eliminates the need for
separate panel meters. Use serial and Ethernet links to efficiently
transmit key information, including metering data, protection element
and control I/O status, Sequential Events Recorder (SER) reports,
breaker monitor, relay summary event reports, and time
synchronization. Use expanded SEL
OGIC control equations with math
and comparison functions in control applications. Incorporate up to
1000 lines of automation logic to speed and improve control actions.
Monitoring. Schedule breaker maintenance when accumulated breaker
duty (independently monitored for each pole of two circuit breakers)
indicates possible excess contact wear. Electrical and mechanical
operating times are recorded for both the last operation and the average
of operations since function reset. Alarm contacts provide notification
of substation battery voltage problems (two independent battery
monitors) even if voltage is low only during trip or close operations.
Comprehensive Metering. View metering information for Line, Circuit
Breaker 1, and Circuit Breaker 2. Relay metering includes
fundamental and rms metering, as well as energy import/export,
demand, and peak demand metering data. Synchrophasor data can be
used for time-synchronized state measurements across the system.
Oscillography and Event Reporting. Record voltages, currents, and
internal logic points at up to 8 kHz sampling rate. Phasor and
harmonic analysis features allow investigation of relay and system
performance.
Sequential Events Recorder (SER). Record the last 1000 entries, including
setting changes, power-ups, and selectable logic elements.
High-Accuracy Time Stamping. Time-tag binary COMTRADE event
reports with real-time accuracy of better than 10 µs. View system state
information to an accuracy of better than 1/4 of an electrical degree.
Digital Relay-to-Relay Communication. Enhanced MIRRORED BITS
communications to monitor internal element conditions between
relays within a station, or between stations, using SEL fiber-optic
transceivers. Send digital, analog, and virtual terminal data over the
same M
IRRORED BITS channel.
Ethernet Access. Access all relay functions with the optional Ethernet
card. Interconnect with automation systems using IEC 61850 or DNP3
LAN/WAN protocols directly or DNP3 through an SEL-2032
Communications Processor or SEL-3530 RTAC. Use file transfer
protocol (FTP) for high-speed data collection.
Increased Security. The relay divides control and settings into seven relay
access levels; the relay has separate breaker, protection, automation,
and output access levels, among others. Set unique passwords for each
access level.
Rules-Based Settings Editor. Communicate with and set the relay using an
ASCII terminal, or use the PC-based
ACSELERATOR QuickSet
Software to configure the relay and analyze fault records with relay
element response. View real-time phasors.
Settings Reduction. Internal relay programming shows only the settings
for the functions and elements you have enabled.
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