Company News

Schweitzer Engineering Laboratory

2350 N.E. Hopkins Ct., Pullman, WA, 99163, USA

  • 509-332-1890

Latest New Product News from
Schweitzer Engineering Laboratory

Electrical Equipment & Systems, Optics & Photonics

Fault Transmitter and Receiver Systems offer protection to distribution systems.

April 20, 2017

Available in SEL-FT50 transmitter and SEL-FR12 receiver models, Fault Transmitter and Receiver Systems eliminate unnecessary coordination delays. SEL-FT50 transmitter is installed on laterals, branches and main lines for broadcasting fault statuses via 860 or 900 MHz radio to receiver system. System consists of 12 line-powered SEL‑FT50 transmitters and 1 SEL-FR12 receiver that communicate... Read More

Electrical Equipment & Systems

SEL-T400L Time-Domain Line Relay is based on traveling-wave microprocessor.

March 29, 2017

Capable of detecting power system faults, SEL-T400L Time-Domain Line Relay sends trip signal to circuit breakers at 4 to 10 times faster than phasor-based relays. Relay uses combination of traveling wave and incremental quantity protection technologies. Unit trips at a speed of millisecond for improved system stability and power quality.

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Sensors Monitors & Transducers

SEL-8301 Underground Distribution Sensor determines fault type.

December 9, 2016

Ideal for underground vaults and pad-mounted switchgear, SEL-8301 Underground Distribution Sensor withstands harsh environments including submersion in water up to 15 feet. Enabling connection of 12 CTs, device monitors up to four three-phase circuits. With line current measurement accuracy of 1.5 percent, unit reads load data every 15 minutes. Using wireless Ingenu/Trilliant RPMA network,... Read More

Computer Hardware & Peripherals, Robotics

Industrial Computer operates with no fans or forced airflow.

October 19, 2016

Based on Intel® Core™ i7 processor, Model SEL-3360E supports RAID configurations and uses single-level cell NAND flash memory. Up to 16 GB of error-correcting code RAM provides ample memory for demanding applications. In addition, unit incorporates 2 PCI expansion slots to enable I/O customization. Operating in environments from -40 to +140°F with no fans or forced airflow, computer is... Read More

Controls & Controllers

Real-Time Automation Controller has broad communications support.

September 26, 2016

Complementing existing support for IEC 61850 MMS Client, MMS Server, and Generic Object-Oriented Substation Event (GOOSE) communications, Real-Time Automation Controllers (RTACs) support IEC 61850 manufacturing message specification (MMS) File Services and Edition 2 compliance. RTACs, performing interoperable, high-speed automation and control for substations, also facilitate gathering of... Read More

Controls & Controllers, Electrical Equipment & Systems, Green & Clean

Microgrid Control System uses layered cybersecurity hierarchy.

June 23, 2015

Allowing seamless integration of distributed energy resources, Microgrid Control System maintains uninterrupted power to critical loads. Microgrid controller is able to respond to external data, such as real-time pricing signals and fast-changing system dynamics. Priorities can be assigned to various user-defined scenarios, like economic dispatch, carbon footprint minimization, renewable... Read More

Computer Hardware & Peripherals, Optics & Photonics, Test & Measuring Instruments

Optical Network brings optical networking to tight areas.

June 17, 2015

Designed to reduce required rack-mount space, SEL ICON cube chassis brings wide-area communications to space-constrained locations. Combination of deterministic SONET transport technology with flexible Ethernet and TDM drop interfaces provides integrated protection, data, and voice communications solution in one platform. Networks created by SEL ICON support serial data, IEEE C37.94, transfer... Read More


Compact Industrial Computer is built for reliability, durability.

June 3, 2015

Powered by dual- and quad-core Intel® Core™ i7 CPUs, SEL-3360S is built and tested to utility substation standards and operates from -40 to +167°F without any fans or forced airflow. Features include single-level cell NAND flash, up to 16 GB ECC RAM, as well as support for 2 solid-state 2.5 in. SATA drives and RAID configurations. With no vents or moving parts,... Read More

Electrical Equipment & Systems, Sensors Monitors & Transducers, Test & Measuring Instruments

Power Quality Meter offers synchrophasor capability.

May 1, 2015

With synchrophasors, SEL-735 Power Quality and Revenue Meter collects real-time measurements of electrical quantities. Synchrophasor data can be used to perform wide-area control, determine stability margins, detect islanding, record system-wide disturbances, and visualize dynamic system responses. When used as phasor measurement unit, SEL-735 provides synchrophasor data for frequency, phase,... Read More

Timers & Clocks

Satellite-Synchronized Network Clock supports IRIG-B and PTP.

May 1, 2015

With Model SEL-2488, users can synchronize end devices with submicrosecond accuracy using demodulated IRIG-B and/or Precision Time Protocol. Network clock can serve as PTP grandmaster clock, supporting both default profile (IEEE 1588-2008) and power system profile (IEEE C37.238). Capable of synchronizing time for up to 4 independent networks with time-stamp accuracy of 100 ns, Model SEL-2488 can... Read More

Electrical Equipment & Systems

High-Speed Relay leverages 87L-over-Ethernet feature.

March 16, 2015

SEL-411L supports data exchange over Ethernet network to provide line current differential (87L) protection for transmission lines with up to 4 terminals. High-speed transmission line differential, distance, and current protection relay provides 1- and 3-pole tripping and reclosing with synchronism check, circuit breaker monitoring, breaker failure protection, and series-compensated line... Read More

Test & Measuring Instruments

Phasor Measurement Unit enhances applicability via modularity.

November 24, 2014

SEL-2240 Axion®, available with Phasor measurement unit (PMU), enables creation of customized solution for specific synchrophasor application. SEL-2245-4 AC Analog Input Module measures frequency as well as voltage and current phasors for PMU applications, while SEL-2244-2 Digital Input Module communicates breaker and switch status using digital status bits in synchrophasor messages.... Read More

Computer Hardware & Peripherals, Safety & Security Equipment

Security Gateway integrates physical security capabilities.

October 8, 2014

In addition to promoting cybersecurity threat awareness, SEL-3622 offers security capabilities that enhance visibility and response time regarding physical tampering with field recloser and voltage regulator control cabinets. Detection capabilities cover sudden movement via embedded accelerometer, sudden changes in visible light via embedded light sensor, opening of doors via input sensor, and... Read More

Services, Timers & Clocks

Satellite-Synchronized Network Clock is accurate to ±40 ns.

September 15, 2014

Designed for critical infrastructure and harsh environments, Model SEL-2488 receives GNSS time signals and distributes precise time via multiple output protocols, including IRIG-B and NTP. Device provides time delay compensation for antenna cables and output cables on per-port basis to further optimize time distribution accuracy. For security, clock features Syslog Ethernet standard for event... Read More

Electrical Equipment & Systems

Motor Management Relay includes arc-flash light sensor.

February 20, 2013

Using standard motor thermal management, overcurrent protection, and integrated arc-flash detection, Model SEL-849 protects equipment and personnel in low- and medium-voltage motor control centers. Unit features 4 contact outputs, 6 opto-isolated control inputs, EIA-232/EIA-485 port, and Ethernet 10/100 BASE-T port. With 2.8 x 5 x 6 in. form factor and current input of 0.5–128 A, relay... Read More

Computer Hardware & Peripherals, Controls & Controllers

RTU/PLC System offers low-voltage power supply option.

April 10, 2012

Available with 24/48 Vdc power supply, SEL-2240 Axion comes with 4-slot or dual 4-slot backplanes that are useful for creating small distributed control systems. Unit supports IEC 61850 GOOSE with up to 120 receive and 48 transmit messages, for flexibility in integrating variety of intelligent electronic devices. ACSELERATOR RTAC® SEL-5033 configuration software is included with everything... Read More

Computer Hardware & Peripherals

Ethernet Security Gateway provides password and account management.

September 26, 2011

As firewall and access control solution for substations and industrial environments, SEL-3620 allows user-based access controls to serial intelligent electronic devices (IEDs), Ethernet IEDs, and critical protection devices. Automatic password management supports regular IED password changes on user-configurable schedule or on triggered basis, and generates audit reports that detail password... Read More

Computer Hardware & Peripherals, Controls & Controllers

Modular Distributed Control System combines RTUs and PLCs.

September 1, 2011

Featuring configurable design, Axion SEL-2240 combines IEC 61131 logic processor, secure communications, advanced data concentration, local and remote I/O, and protocol conversion between multiple built-in client/server protocols. User can build system with up to 6 units, or nodes, which are connected in network using EtherCAT® protocol. Each node can accommodate 10 modules, including... Read More

Communication Systems & Equipment, Green & Clean, Sensors Monitors & Transducers, Test & Measuring Instruments

Power Quality Meter complies with IEC 61000-4-30 standard.

June 1, 2011

Providing IEC and ANSI 0.2 Accuracy Class billing data, Model SEL-735 includes waveform capture, harmonic measurements, and data logging function. Advanced model additionally features high-order harmonics, sample rates, detailed power quality reports, and Ethernet. Integration with energy management software from SEL and others helps users cut energy bills. Read More

Sensors Monitors & Transducers, Test & Measuring Instruments

Digital Transducer provides smart distribution monitoring.

September 29, 2010

With SEL-734T, system operators can assess state of entire distribution system in real-time, isolate disturbances, and switch on power condition equipment by issuing remote commands. Instantaneous disturbance reporting helps minimize response times and prevent future disturbances. Providing seamless communications integration with optional Ethernet port and DNP3 communications protocol,... Read More

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Schweitzer Engineering Laboratory