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Arc-Flash Solutions

SEL arc-flash detection technology significantly decreases the time it takes a relay to trip in response to an arc fault, which reduces hazardous arc-flash incident energy. SEL-751 Feeder Protection Relays and SEL-849 Motor Management Relays combine light-sensing technology with fast overcurrent protection to provide high-speed arc-flash detection (AFD). Combining these technologies allows high-speed tripping during arc-flash events without overtripping for external faults.

Automation Services

SEL automation services have been implemented in power systems worldwide. SEL engineers are highly trained professionals with years of experience and a broad knowledge base to provide the best solution for your system.

Commercial Buildings

Reliable power is critical to nearly every business operation. Major organizations worldwide trust SEL to provide mission-critical power protection, communications, and management systems to ensure an uninterrupted supply of high-quality electric power. SEL’s comprehensive power management systems optimize power delivery and quickly reroute energy around faults to minimize production interruptions and save money.

Consulting Services

SEL experts can help you understand your power system and identify the right solutions to improve system performance, reliability and efficiency.

Consumer Products

SEL power management solutions integrate seamlessly with existing process control systems to ensure energy, material delivery, and production processes are synchronized for maximum production, quality, and efficiency. SEL’s comprehensive power management systems can minimize production problems by rerouting energy around system faults, and our metering solutions help lower energy expenses.

Custom Enclosure Solutions

SEL integrates multiple pieces of equipment and hardware (from SEL and other vendors) into a single assembly or kit, enabling one-stop shopping for parts and labor with a quick turnaround time.

Custom Panel Solutions

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.

Design and Drafting Services

With over 50 designers and drafters located around the world, SEL’s engineering services team provides local design and drafting services to our customers.

Distribution Network Automation

SEL DNA systems improve reliability, increase system operational efficiency, and reduce operating costs, helping you meet increasing customer expectations for affordable and reliable electric service.

Education

University laboratories, public venues, classrooms, and dormitories must all receive a reliable stream of electric power. SEL has experience in integrating local generation resources with electrical utility feeds to provide highly reliable schemes to maintain campus uptime during local or utility outages. SEL's time distribution and display systems provide coordinated time throughout the campus for academia and facility operations, all time sources are traceable to NIST. SEL provides the solutions, services, tools, and training that employees need to run clean, safe, and energy-efficient facilities. In response to increasing energy efficiency goals, SEL metering solutions provide precise monitoring of consumption by individual buildings and departments.

Electronics

Semiconductor and electronics manufacturers worldwide trust SEL to provide mission-critical power protection, communications, and management systems to ensure an uninterrupted supply of high-quality electric power. SEL's comprehensive power management systems optimize power delivery and quickly reroute energy around faults to minimize production interruptions and save money.

Engineering Services

SEL Engineering Services are the industry experts with experience in electric utility transmission and distribution protection and control, industrial power system management, integration of distributed energy sources, and cyber security best practices.

Fault Indicators and Sensors

SEL designs and manufactures fault indicators and sensors, supplying utilities around the world with products that help reduce fault-finding time so that power can be restored quickly after a fault occurs. SEL is the electric power industry's leader in fault indicator technology, producing the widest variety of fault indicator products.

Feeder Protection

Protect radial and looped distribution circuits with comprehensive protection capabilities, including time-overcurrent, directional overcurrent, over-/undervoltage and frequency. Apply SEL feeder protection products to provide protection, automation, and control capabilities all in one package. Upgrade to an SEL world-class protection system today and be confident that your industrial feeder system will be working tomorrow.

Food and Beverage

SEL’s power management and process automation solutions enhance production processes that produce food and beverage products that meet the highest standards for product quality and safety. These processes often operate in hot and humid conditions that require the performance and reliability found in SEL products. Our rugged computing solutions are designed with no moving parts, and built to keep critical processes running. SEL’s high-speed communications and logic-processing capabilities facilitate power management and production process decision-making that automatically keeps problems from escalating and adversely affecting safety, quality, or production.

Generator and Microgrid Synchronizing Systems

SEL Engineering Services can design and build conventional and advanced generator and microgrid synchronizing systems with automatic and manual synchronizing capability.

Generator Protection

Apply SEL generator protection products and avoid expensive equipment damage and failure while maintaining system performance and increasing availability. SEL quality tested features provide complete primary and backup protection from all types of faults. Upgrade to an SEL world-class protection system today and be confident that your generation system will be working tomorrow.

Government - Federal

Schweitzer Engineering Laboratories, Inc. (SEL) is a privately held, 100-percent-employee-owned U.S. based company that designs, manufactures and supports a complete line of products and services for electric power systems, ranging from generator and transmission protection to distribution automation and control systems. As a trusted supplier to government agencies, SEL offers solutions for microgrids, critical infrastructure, and cybersecurity, to help ensure the security, safety, and reliability of electric power at the US government. Our high-accuracy systems and communications capabilities enable the government to conserve energy and lower expenses.

Government - Municipal and State

Government facilities employ expanding information technology (IT) and mission-specific assets that require fault- and damage-tolerant power systems. These systems must also employ data encryption and layered levels of security to safeguard power systems, sensitive information, and data communications. SEL engineering services, power system control, and data security solutions are highly respected among municipalities and state government institutions. SEL engineers perform within stringent physical and information security requirements and deliver Job Done solutions to government customers around the world.

Government Services

Government facilities employ expanding information technology (IT) and mission-specific assets that require fault- and damage-tolerant power systems. These systems must also employ data encryption and layered levels of security to safeguard power systems, sensitive information, and data communications. SEL engineering services, power system control, and data security solutions are highly respected among military and government institutions. SEL engineers perform within stringent physical and information security requirements and deliver Job Done solutions to government customers around the world.

Healthcare

Healthcare providers around the world depend on continuous electric power to properly care for their patients. SEL’s network communications, precise-time, cybersecurity, and electric power protection products are designed to provide clean, reliable power around the clock. Healthcare facilities worldwide rely on SEL products and engineering services to meet their power system needs in a reliable and cost-effective manner.

HMI/SCADA/Energy Management Systems

SEL designs, develops, tests, and deploys complete supervisory control and data acquisition (SCADA) systems to monitor and control your systems or processes. We have experience providing various system sizes, ranging from simple standalone to complex networked systems.

Life Sciences

Pharmaceutical and biotechnology facilities worldwide take advantage of advanced power management solutions from SEL and are supported by SEL engineers who know their industry and business. SEL protection, automation, control, and metering solutions meet the specific needs of the life sciences industry. These solutions provide highly reliable, flexible options capable of meeting all your application requirements.

Metals and Mining

SEL’s power management, process control, and automation products are designed for the extreme environmental conditions common in mining and metal-forming industries.

Metering Solutions

Unmatched accuracy, power quality recording, and value with SEL meters.

Microgrid Control Systems

SEL microgrid systems provide safe, reliable, secure, and efficient operation through robust power system protection, fast island detection/separation, advanced automation controls and algorithms, secure communications, and optimal use of all types of distributed energy resources (DER).

Mission-Critical Facilities

SEL’s communications, networking, precise-time, cybersecurity, and electric power protection products are designed for facilities that must maintain the highest level of online availability. SEL is uniquely qualified to integrate utility power sources, standby generation, and uninterruptible power supply (UPS) assets within a seamless power system network. The control logic in SEL protective relays, combined with our real-time automation controllers, can eliminate PLCs and redundant control wiring while reducing complex software requirements, lowering costs, and improving system reliability.

Motor Protection

SEL understands how critical it is to provide continuous reliable motor protection. That is why SEL offers an industry-leading product with the most extensive warranty. SEL motor protection relays give customers a custom fit motor protection system with easy installation, for both retrofit and new application.

motorMAX Low-Voltage Motor Management and Protection System

motorMAX is SEL’s smart motor control system for low-voltage motor control centers (MCCs).

Oil, Gas, and Petrochemical

With over 25 years of innovation in power management products, SEL has field-proven solutions in the most extreme environments. SEL reduces the cost of your operation while improving safety and reliability.

Power Generation

SEL’s power interconnection, protection, communications, control, and metering equipment is ideally suited for utility-, industrial-, and commercial-scale power generation systems

powerCORE Substation Control Enclosures

SEL control enclosures are designed, manufactured, tested, integrated, installed, and commissioned following the leading quality standards, warranty, and vertical integration production philosophy that you have come to expect from SEL.

powerMAX Power Management Solutions for Industries

SEL powerMAX power management solutions for industries protect against blackouts with advanced technology that revolutionizes protection and control for islanded/nonislanded power systems.

powerMAX Remedial Action Schemes for Utilities

SEL powerMAX RAS solutions for utilities operate transmission corridors at a higher capacity than ever before. SEL powerMAX RAS solutions are commonly used by utilities for wide-area monitoring, control, and integration of large wind power stations in transmission systems.

Precise Time

The need for substation time synchronization has evolved from time-stamping basic Sequence of Events and disturbance recording information to more mission-critical needs, such as synchrophasor measurement (IEEE C37.118), sampled measured values (IEC 61850 9-2), and traveling wave fault location. These new applications demand the same reliability, security, and dependability for precise time synchronization as other equipment designed for critical infrastructure applications, like protective relays in a substation.

Professional Security Services

Cybersecurity isn’t something that can be achieved by one person, product, or technology. Real system-wide protection starts with the understanding that it takes teamwork to achieve success. SEL believes that combining layered security protection with the efforts of protection engineers, information technology personnel, and compliance managers leads to a secure and compliant solution.

Protection Services

SEL Protection and Automation Services improve power system performance. SEL engineers approach each new project with years of experience and a broad knowledge base, which provides the best solution for your power system.

Pulp and Paper

Pulp and paper manufacturers require uninterrupted, high-quality electric power for distribution to plant machinery that operates in very harsh environments. SEL power management solutions can modernize your electrical system to ensure plant equipment operates continuously, efficiently, and safely under any condition. SEL products are easy to use, backed by a ten-year, no-questions-asked warranty, and supported by a highly trained and experienced support team.

Renewable Energy

SEL’s power interconnect, protection, communications, control, and metering equipment is ideally suited for renewable energy and distributed power sources of all types. SEL solutions monitor and manage large and small electrical generation systems at wind farm, biofuel, solar voltaic, and more traditional combustion-powered sources worldwide.

Rugged Computers

SEL rugged computing products are designed and tested to the same IEEE and IEC standards that apply to protective relays and substation communications equipment: to withstand vibration, electrical surges, fast transients, and extreme temperatures. With no fans or other moving parts and the SEL worldwide, ten-year product warranty, these products employ the most reliable, robust technology available for demanding applications.

Security for Critical Infrastructure

At SEL, security has always been an integral part of our company’s foundation, and we have a long history of developing the most secure products and solutions in the industry. We understand that creating a secure environment depends on teamwork, layered protection, and a strong defense. That’s why we built a dedicated team of experts who can help your organization move toward a more secure and reliable future.

Software-Defined Networking (SDN)

The breakthrough software-defined networking (SDN) technology in the SEL-2740S Software-Defined Network Switch solves the inherent limitations of Ethernet networks. Our approach provides centralized traffic engineering that allows you to predefine every primary and failover path as well as specify the applications that are and are not allowed on the network. By putting the design control in your hands, the SEL-2740S and SEL-5056 Software-Defined Network Flow Controller enhance the performance, security, configuration, and management of OT and IT networks.

Synchrophasors

Synchronized phasor measurements (synchrophasors) provide real-time measurement of electrical quantities from across a power system.

System Modeling

Improve power system performance in critical applications, validate relay performance, and optimize settings using model power system testing.

Technologies

SEL offers a wide variety of innovative technologies, including synchrophasors, cybersecurity, IEEE C37.94-compatible products, IEC 61850, and Connectorized® relays.

Transmission Planning

SEL offers transmission planning analysis and design services over a wide range of study scenarios from 69 kV to 525 kV.

Transportation

SEL’s power management solutions are employed worldwide in aerospace, shipbuilding, rail, and motor vehicle production facilities to ensure high-quality electric power is always available for safe, economical manufacturing. SEL solutions are also employed in harbors, airports, and mass-transit applications to ensure utility-supplied, locally generated, and emergency power are integrated and optimally engaged as needed.

Traveling Wave Fault Location

The SEL-411L-1 Advanced Line Differential Protection, Automation, and Control System is the only relay on the market that combines subcycle transmission line protection with traveling wave fault location (TWFL).

Utilities

SEL leads in the protection, monitoring, and control of electrical transmission and distribution lines, apparatus, and stations. Our full line of protective relays, substation automation systems, cybersecurity devices, automation controllers, and networking equipment works together to provide protection, SCADA, automation, monitoring, and asset management.

Water and Wastewater

Intelligent controls with communications, event notification, data collection, and energy metering capabilities are an integral part of a best management plan in water and wastewater systems. SEL’s innovative solutions provide energy utilization, asset protection, and water resource management.

Wide-Area Situational Awareness

Learn about SEL's solution for power system wide-area situational awareness (WASA).