Products

SEL designs, manufactures, tests, and delivers custom protection, control, and metering panels as well as control cabinets and retrofit doors. SEL panels are supported by an unmatched warranty and extraordinary customer service. Panels, cabinets, and doors are built to match customer specifications and needs.

The SEL ICON is a wide-area-networking multiplexer optimized for industrial and utility applications. ICON virtual synchronous networking (VSN) preserves the performance characteristics of time-division multiplexing (TDM) when converting to Ethernet as a transport protocol. By combining TDM and Ethernet transport options with a comprehensive range of data interfaces, the ICON makes it easy to migrate legacy network technologies to a converged IT/OT packet-based solution.

SEL sells wall-mount AC power supplies as accessories for communications and networking equipment. These AC power supplies are commercial temperature rated and appropriate for testing and office environments.

The RadioRANGER solution reduces the need to access vaults or open pad-mounted enclosures to retrieve the FCI status, decreasing fault-locating time and improving utility personnel safety.

Economical timed-reset fault indicator eliminates false reset concerns.

Select your trip value in the field. Stock one fault indicator for a variety of system conditions.

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.

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.

A submersible separable-core current transformer provides reliable use in subsurface vaults where flooding can occur and where it is difficult to open the primary conductor to install a solid-core-type CT.

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.

Test traveling-wave relay performance under various conditions with the SEL-T4287 Traveling-Wave Test System. The SEL-T4287 accurately tests single- and double-ended traveling-wave fault locators and traveling-wave protection elements.

This distribution automation sensor stores load data and monitors the distribution line for loss of current or fault events. Reports are transmitted to an access point on a communications network using an integrated radio.

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

Use the SEL-311L Relay with integral four-zone distance backup for easy-to-apply, high-speed line protection.

The SEL-321 Relay delivers outstanding EHV protection, performance, and features—at a price practical for all voltage levels and with the features you need for system integration.

The SEL-351RS Kestrel is a lightweight, advanced recloser control with integrated logic, communications, and comprehensive protection for single-phase applications. Convenient operator controls allow easy local access to metering and event data.

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).

Protect power transformers with up to three windings, as well as reactors, generators, large motors, and other multi-terminal power apparatus.

Provide low-impedance bus differential protection, dynamic zone configuration, circuit breaker failure protection, backup overcurrent protection, check zones and voltage inputs for increased security.

Simplify relay settings and reduce inventory with one relay for all your capacitor bank needs. The versatile SEL-487V protects and controls both grounded and ungrounded, single- and double-wye capacitor bank applications.

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

Apply low-cost, compact package with essential protection and control elements for distributed generation.

The SEL-551 Overcurrent/Reclosing Relay replaces the many relays, control switches, and wiring required in traditional distribution substation protection and control panels. The relay also replaces line recloser control packages at a fraction of the cost.

The SEL-551C Overcurrent/Reclosing Relay combines overcurrent protection, built-in I/O, enhanced communications features, and multiple-shot reclosing in one compact relay. Great for industrial, commercial, and utility, primary or secondary overcurrent protection.

Provide single-zone high-impedance bus differential protection, backup overcurrent protection, and breaker failure protection for any number of terminals in a bus. Use the simple settings and dedicated same-ratio CTs to create a cost-effective and easily expandable bus protection solution.

Use the SEL-651R for your most demanding recloser applications. The SEL-651R is a plug-compatible replacement for most Kyle/Cooper FXA, FXB, and Form 3, 3A, 4, 4A, 4C, 5, and 6 recloser controls. Built-in harmonic metering and voltage sag, swell, and interruption reporting help improve power quality.

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-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-734B provides advanced monitoring and control capabilities for applications such as three-phase capacitor bank control and feeder automation.

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

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-2414 Transformer Monitor provides an exceptional combination of monitoring, control, and communications in a compact package.

The SEL-2431 is compatible with most 32-step, single-phase voltage regulators manufactured in North America. Use various hinge and wiring kits to easily upgrade existing controls without removing the regulator from service. Quickly integrate the SEL-2431 into existing communications schemes using EIA-232, EIA-485, fiber-optic ST, or fiber-optic V-pin connectors.

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.

The SEL-2488 raises the bar for satellite-synchronized clocks by providing industry-leading accuracy, time distribution, security, and ease of use not offered in other critical infrastructure clocks.

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

Adds I/O capability (8 DI, 8 DO) using Fast Message.

The compact, ten-window SEL-2533 with communications ports is ideal for displaying alarm conditions and notifying personnel for each individual rack, panel, generator, equipment block, power line terminal, assembly line, conveyor, or other apparatus.

SEL-2595 Teleprotection Terminal provides secure, high-speed contact transfer through communications multiplexers, using an IEEE C37.94 standard fiber-optic interface.

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

Although a trip coil monitor may be a small part of a protection system, its misoperation can be a huge problem and can cost utilities time and money. The SEL-2652 brings increased reliability and versatility to trip coil monitoring, giving you peace of mind that your circuit breakers will operate when necessary.

The SEL-2726U Eight-Port Ethernet Switch is the dependable choice in Ethernet connectivity, whether it’s used in testing stations, laboratories, research and development, manufacturing, or other exacting work areas.

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

Connect EIA-232 devices to an EIA-485 network with tough, flexible SEL-2886 EIA-232 to EIA-485 Interface Converter.

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

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.

This tough computer by SEL includes different processor options, more storage options, more USB and ethernet options; and with no moving parts and using error correcting memory technologies it still achieves reliability expectations and specifications.

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-3532 is a Compact Flash image that easily transforms an SEL industrial computing platform to enable all of the standard features that are available in the SEL Real-Time Automation Controller (RTAC).

The SEL-3555 RTAC is the most powerful RTAC with unmatched performance and high speed logic capabilities for critical automation, protection, and control schemes. The integrated video port on the RTAC eliminates the need for an additional computer for viewing the HMI. The rugged and reliable design makes it ideal for operating in harsh environmental conditions.

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-4388 gives engineers and technicians the power to accelerate commissioning and bench testing, and to improve cable identification, training, and maintenance.

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.

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

Adds dial-up access to devices in harsh utility and industrial environments.

Use station battery to power low-voltage communications and instrumentation devices.  Compatible with telecommunication battery backup including cell tower sites.

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-9524 GNSS antenna for critical infrastructure applications is capable of receiving signals from both GPS and GLONASS satellite constellations. It is manufactured to be robust and reliable.

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.

SEL manufactures high-quality cables for connecting a variety of devices. You can order cables to specific lengths to meet your needs. Each cable is quality tested to ensure reliability and proper operation.

SEL Compass offers a visual, highly intuitive interface for easy notification of product updates as well as download and sharing of the many products and information that SEL provides.

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.