1.2
SEL-400 Series Relays Instruction Manual Date Code 20171006
Introduction
Common Features
tions with math and comparison functions in control applications. Incor-
porate as many as 1000 lines of automation logic to speed and improve
control actions.
Oscillography and Event Reporting. Record voltages, currents, and internal
logic points as fast as an 8 kHz sampling rate. Phasor and harmonic anal-
ysis features allow investigation of relay and system performance.
Sequential Events Recorder (SER). Record the last 1000 entries, including set-
ting changes, startups, and selectable logic elements.
High-Accuracy Time Stamping. Time-stamp binary COMTRADE event reports
with real-time accuracy of better than 10 µs. View system state informa-
tion to an accuracy of better than 1/4 of an electrical degree.
Digital Relay-to-Relay Communication. Use enhanced MIRRORED BITS com-
munications 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 through an SEL-3530 RTAC. Use File Trans-
fer Protocol (FTP) for high-speed data collection.
Time-Domain Link (TiDL). Reduce costs with TiDL technology. With this sim-
ple-to-configure solution, the relay ac inputs and most of its digital inputs
and outputs are distributed using SEL-2240 Axion modules. The Axion
modules are connected to the relay through use of direct fiber connec-
tions. By placing the Axion modules near the primary equipment, you can
achieve significant reductions in copper cabling while remaining cyberse-
cure.
Parallel Redundancy Protocol (PRP). Provide seamless recovery from any sin-
gle Ethernet network failure with this protocol, in accordance with IEC
62439-3. The Ethernet network and all traffic are fully duplicated with
both copies operating in parallel.
Increased Security. Set unique passwords for each access level. The relay
divides control and settings into seven relay access levels. The relay has
separate breaker, protection, automation, and output access levels, among
others.
Rules-Based Settings Editor. Communicate with and set the relay using an
ASCII terminal, or use the PC-based QuickSet software to configure the
relay and analyze fault records with relay element response.
Settings Reduction. Show only the settings for the functions and elements you
have enabled using internal relay programming.
Alias Settings. Use as many as 200 aliases to rename any digital or analog
quantity in the relay. The aliases are available for use in customized pro-
gramming, making initial programming and maintenance easy.
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