Products

SEL provides reliable finished (terminated) cables, built to IPC workmanship standards in our ISO 9001 certified plants – And, they are covered by our worldwide, ten-year warranty. A variety of standard and customized twisted pair and coaxial cables and connector combinations are available from SEL.

Overhead AutoRANGER Fault Indicators are self-adjusting fault indicators for overhead lines. You can apply the SEL-AR360 on distribution systems up to 35 kV and the SEL-AR on systems up to 69 kV for permanent and momentary fault indication using bright LEDs and flash patterns.

SEL Underground AutoRANGER Fault Indicators are reliable, self-adjusting, settings-free faulted circuit indicators suitable for applications with fault current ranging from 50 A to greater than 1,200 A. They are designed for a variety of underground applications and can be paired with a range of display options.

Use arc-flash detection cables with SEL-751 and SEL-751A Relays to protect people and equipment from arc-flash events.

Safely connect SEL fiber-optic transceivers, I/O modules, and Ethernet devices.

SEL provides high-quality fiber optic cable solutions in customer specified lengths. Various cables sizes, jacket types, and strand counts are available. Field termination kits are also available.

SEL provides high-quality fiber optic cable solutions in customer specified lengths. Various cables sizes, jacket types, and strand counts are available. Field termination kits are also available.

Safely connect your EIA-232 communications ports using SEL fiber-optic cable and SEL fiber-optic transceivers.

Apply the SEL-FLT and SEL-FLR Fault and Load Transmitter and Receiver System to improve distribution system reliability metrics and customer satisfaction. The SEL-FLT Fault and Load Transmitter operates using 900 MHz wireless sensors that continuously monitor the line for faults while providing load data with 2 percent accuracy to the SEL-FLR Fault and Load Receiver, with a range of up to 10 miles. Speed up system restoration by pinpointing faults and knowing where to send repair crews. Accurate and real-time load monitoring enables improved switching decisions, since operators confidently know which viable alternate feeders are available to pick up the impacted customers.

With breakthrough time-domain technologies, the SEL-T400L Time-Domain Line Protection trips in as fast as 1 millisecond, records events with 1 MHz sampling, and locates faults accurately to the nearest tower with single- and double-ended traveling-wave fault locators.

Apply the SEL-300G Relay for comprehensive primary and backup generator protection.

Select the SEL-321-5 for 50 Hz applications requiring enhanced single-pole tripping, phase and ground distance, directional overcurrent, and negative-sequence protection.

Apply the SEL-387A to protect any two-winding power transformer and perform predictive maintenance based on accumulated through-fault duty (as compared to transformer capability as defined in ANSI Standard C57.109).

Apply the SEL-401 for substations with IEC 61850-9-2 sampled values (SV) systems. Sample analog data, such as currents and voltages, then publish those data to a fiber-based Ethernet network for use in other IEDs such as compliant SEL-400-series relays.

Quickly integrate bay control status and control for breakers and disconnect switches with full automation and protection in one device. With advanced synchrophasor measurement, the SEL-451 provides system stability awareness. Choose between Ethernet and serial communications ports with DNP3 and IEC 61850 Edition 2  protocols.

Simplify protection in two-high switchgear with two independent sets of protection elements in one compact relay.

The SEL-700G is the right solution for utility and industrial generator protection, with an autosynchronizer, flexible I/O, and advanced communications. Apply the SEL-700G for comprehensive primary and backup generator protection.

Monitor and Control Critical Substation Apparatus With One Powerful Package

The SEL-710 Motor Protection Relay dynamically calculates slip. This premiere motor protection scheme allows maximum start times. Thermal motor protection models give the SEL-710 advanced protection beyond industry standards.

The SEL-710-5 provides synchronous motor protection, starting control, broken rotor bar detection, and now arc-flash protection.

The SEL-734 Meter exceeds ANSI and IEC Class 0.2 accuracy with four-quadrant energy and demand metering. Advanced load profile trending compatible with MV-90®, DNP3, and Modbus® protocols ensures integration with practically any billing system.

The SEL-735 Power Quality and Revenue Meter is fully Class A-compliant to the IEC 61000-4-30 power quality standard. With reliable Class A measurement, operators can identify power system anomalies and isolate their source with confidence.

With an MTBF of 10x over other industrial computers and 10-year warranty, SEL computers are reliable and withstand –40°C to +75°C. Quality and service are what we have built our name on. Our computers are built to the same tough standards as our protective relays.

Replace remote terminal units and other devices with one reliable system.

Low-cost, high-speed bus protection, automated bus sectionalizing, breaker failure protection, and multiple terminal line protection. Interconnect up to 15 devices using  Mirrored Bits communications.

The Axion is a fully integrated, modular I/O and control solution suitable for many utility and industrial applications. It combines the communications, built-in security, and IEC 61131 logic engine of the SEL Real-Time Automation Controller (RTAC) product line with a durable suite of I/O modules that provide high-speed, deterministic control performance over an Ethernet network.

Compact, precision-time device for limited space and high-accuracy timing to ±100 nanoseconds.

The SEL-2407 provides time display, reliability, durability and high-accuracy timing to ± 100 nanoseconds.

The SEL-2440 DPAC is a 48-point discrete programmable automation controller that is ideal for utility and industrial applications as a rugged and reliable I/O solution at an economical price.

Apply SEL-2505 Remote I/O Modules to use two optical fibers instead of 32 wires to reduce costs, improve safety, and boost reliability.

Rack-Mount Remote I/O Module with 8 digital inputs and 8 digital outputs using SEL Mirrored Bits communications.

Connect the SEL-2507 to the SEL-T400L Time-Domain Line Protection or another SEL-2507 at 115.2 kbps to provide ultra-high-speed remote I/O.

Measure and transmit data from up to 12 RTDs and a single contact status located in transformers, breakers, motors, generators, or other system apparatus.

Add the SEL-2664 Field Ground Module to the SEL-300G or SEL-700G to protect all the critical components in your generator with one comprehensive relay. Or, add the SEL-2664 to the SEL-2664S to complete ground fault protection on both the rotor and stator.

The SEL-2730M is a managed 24-port Layer 2 switch. Apply the switch to build reliable, safe Ethernet networks in electrical substations, plants, and other mission-critical sites. Connect to devices using shielded Category 5/5e/6 copper cables and single- or multimode LC fiber-optic cables.

The SEL-2730U is an unmanaged 24-port Ethernet switch, designed for the harsh environments commonly found in the energy and utility industries. The switch supports communications infrastructure built for engineering access, supervisory control and data acquisition (SCADA), and real-time data communications, while offering the same reliability found in SEL protective relays.

The SEL-2740S is designed for the harsh environments commonly found in the energy and utility sectors. The SEL-2740S is the industry’s first SDN-enabled switch. Built for the highest reliability and best performance, it revolutionizes the way networks are engineered and maintained.

The SEL-2741 enables deny-by-default SDN—ideal for Ethernet applications requiring real-time control, measurement, and data acquisition, such as IEC 61850-based communications.

Communicate 500 meters with port-powered fiber-optic transceivers / modems.

Communicate up to 500 meters with port powered fiber-optic transceivers

Communicate up to 500 meters on multidrop and point-to-point EIA-485 networks.

Communicate from 16 to 80 kilometers with port-powered single-mode fiber-optic transceivers.

Communicate from 16 to 110 kilometers with port-powered single-mode fiber-optic transceivers. 

Adds Ethernet connectivity to an SEL device using its EIA-232 serial port.

Isolate EIA-232 and IRIG-B signal lines to reduce signal-ground current induced by adjacent high-current conductors.

Instead of unplugging your modem, establish strong access controls with the SEL-3025 and use powerful AES-128/256 and SHA-1/256 to encrypt and authenticate serial links with the Secure SCADA Communications Protocol (SSCP).

The SEL-3031 combines three serial data ports in one radio, allowing up to three different connections and protocols to operate simultaneously. The radio transmits data in the license-free 900 MHz ISM band, providing an economical communications path and backup communications system.

The SEL-3060 is a multipurpose Ethernet radio for distribution automation wireless applications, including SCADA and engineering access.

The SEL-3061 Cellular Router is a secure wireless communication solution designed for critical applications. For electric utilities, the router provides connectivity to devices like recloser controls, motor-operated switches, capacitor banks, voltage regulators, substations, and much more. 

Convert asynchronous EIA-232 serial communications interfaces to the IEEE C37.94 optical standard.

With an MTBF of 10x greater than other industrial computers and a 10-year warranty, SEL computers are reliable and withstand temperatures from –40°C to +75°C.

With an MTBF of 10x over other industrial computers and a 10-year warranty, SEL computers are reliable and withstand temperatures from –40°C to +75°C. 

The SEL-3360 is a versatile computing platform, configurable as a Blueframe application platform or an industrial computer running Windows or Linux operating systems.

The SEL-3373 PDC provides phasor data concentration and local archiving for up to 40 phasor measurement units (PMUs). It is designed to operate reliably in harsh substation environments and offers several innovative features. 

The SEL-3390E4 Network Adapter is a PCIe card designed to provide network expansion capabilities for SEL's flexible, robust computer line.

The SEL-3390S8 Serial Adapter is a PCIe expansion card designed to expand the serial I/O capabilities of SEL's flexible, robust computer line.

The SEL-3400 is an inexpensive, reliable, and precise way to distribute demodulated IRIG-B time information. With twelve IRIG-B distribution ports and a bright display, the SEL-3400 is ideal for time distribution in panels.

High-visibility digital clock display synchronized by IRIG-B time signal may be connected together to make synchronized clock system.

Send delay-compensated demodulated IRIG-B up to 4 km over fiber-optic cable with SEL-3405 High-Accuracy IRIG-B Fiber-Optic Transceivers.

The SEL-3505/3505-3 RTACs are compact, lower-voltage versions of the SEL-3530 RTAC. All of the standard features of the RTAC are included in the SEL-3505/3505-3 RTACs, making them very powerful options for protocol conversion and secure communications gateways to remote intelligent electronic device (IED) installations.

The SEL-3530 RTAC is a complete automation platform designed for substation and industrial control applications. An IEC 61131 logic engine and multiple client/server protocols are standard.

The SEL-3573 Station PDC is a hardware-based phasor data concentrator with integrated archiving. It concentrates as many as 120 phasor measurement unit (PMU) inputs at rates as fast as 240 messages per second, exceeding the IEEE C37.118-2011 requirement of 60 messages per second. Additionally, the SEL-3573 includes a built-in archiving feature that can be used as part of a NERC PRC-002-2 disturbance recording system. Local archiving of data at each substation protects against loss of data, even in the event of a communications outage. The SEL-3573 offers archiving for both continuous and predefined trigger conditions, so it never misses capturing data necessary for post-disturbance analysis. The SEL-3573 provides the real-time performance needed for synchrophasor-based control schemes.

Economically add serial ports to communications processors or computers, and provide secure Ethernet access to serial products.

The SEL-3620 is the ideal substation access point and jump host to help satisfy NERC CIP requirements for securing the electronic security perimeter (ESP). The substation-hardened SEL-3620 secures all Ethernet and serial communications between the enterprise and remote networks, and interoperates with existing business IT and control systems using Internet Protocol Security (IPsec). The SEL-3620 manages passwords for and secures access to relays and IEDs.

The SEL-3622 hosts the same feature set as the SEL-3620 Ethernet Security Gateway in a smaller, low-power form factor and is perfect for cabinets and other low-power locations. 

The SEL-RTS Relay Test System is designed for testing protective relays having low-level test capabilities. The system consists of the SEL-AMS Adaptive Multichannel Source and either the SEL-5401 or SELtest software.

The SEL-4520 provides a convenient way to test the operation of arc-flash detection relays installed in metal-clad and metal-enclosed switchgear. The SEL-4520 is used to test the SEL-751 and SEL-751A Feeder Protection Relays and other arc-flash detection relays that use light and overcurrent for sensing an arc-flash event.

Easily set and commission devices using acSELerator QuickSet SEL-5030 Software.

Architect configures and documents IEC 61850 systems that include GOOSE, Sampled Values, or Manufacturing Message Specification (MMS) for process bus and SCADA applications.

acSELerator RTAC is a graphical, easy-to-use tool that helps users quickly and easily configure the SEL-3530 Real-Time Automation Controller (RTAC).

acSELerator Diagram Builder SEL-5035 Software is a Microsoft Windows application that enables the creation and management of HMI visualization projects for all of the RTACs in your system.

Improve productivity, manage device data, and collect data quickly and efficiently with Team Software.

The SEL-5073 synchroWAVe Phasor Data Concentrator Software provides phasor data concentration and archving for more than 500 phasor measurement units.

Quickly translate power system data into information with synchroWAVe Central.

synchroWAVe Event can plot relay oscillography, display phasors, and monitor digital status.

SEL-5630 Meter Reports enhances the visualization and analysis of data captured by SEL meters in your system.

Optimize outage management and improve underground reliability.

Use one pair of fibers for full-duplex serial communications plus IRIG-B time synchronization.

Decrease maintenance costs, increase contact reliability/dependability, and reduce destructive dc circuit overvoltages by applying the self-powered SEL-9501 Arc Suppressor to dc circuits.

Increase contact reliability and significantly reduce maintenance costs.

The SEL-9929 Kit is a ready-assembled kit consisting of the SEL-2401 Satellite-Synchronized Clock, the SEL-3401 Digital Clock Display, and all necessary accessories.

The SEL Wireless Protection System helps relays make better tripping and reclosing decisions based on the location of the fault. You can easily adapt it to your power system without interrupting service. The Wireless Protection System provides an innovative approach to enhance distribution substation protection and improve the reliability and safety of your feeder.