SEL Technology—Schweitzer Engineering Laboratories

SEL Technology—Schweitzer Engineering Laboratories Welcome to the Schweitzer Engineering Laboratories official technology, solutions, and products page.

SEL is a globally recognized designer and manufacturer of products and solutions that make electric power safer, more reliable, and more economical. 40 years after designing the world’s first digital protective relay, our devices, software, and systems can be found in over 173 countries, making the power grid and the critical devices within it smarter, more efficient, and more resilient.

To meet NERC CIP-015 requirements, a major northeastern energy utility needed a resource to help plan and execute a larg...
06/02/2026

To meet NERC CIP-015 requirements, a major northeastern energy utility needed a resource to help plan and execute a large internal network security monitoring project.

With over 400 sensors to deploy throughout their transmission substations, the utility chose SEL Cyber Services to provide front‑end engineering design, functional design specifications, and integrated logistics.

After the project was complete, the utility made it the model for future cybersecurity efforts.

Learn about the approach that made this project so successful: https://discover.selinc.com/l/885633/2026-04-10/qnvs5

Porto Alegre/RS | 15 a 19 de junho de 2026O curso P13: Proteção de Sistemas Elétricos Industriais amplia a capacidade do...
06/01/2026

Porto Alegre/RS | 15 a 19 de junho de 2026

O curso P13: Proteção de Sistemas Elétricos Industriais amplia a capacidade do profissional, ao fornecer uma visão geral dos aspectos relevantes e primordiais sobre a proteção de sistemas elétricos industriais, gerando uma base sólida para a análise de ocorrências, manutenção, ajustes e projetos em sistemas elétricos deste tipo.

Destaques:
▪️ Coordenação de relés de sobrecorrente
▪️ Proteção de motores, transformadores e barramentos
▪️ Análise de faltas e ajustes de proteção
▪️ Proteção diferencial e contra arco elétrico

Ideal para engenheiros e técnicos que buscam maior precisão, segurança e performance em sistemas industriais.

Garanta sua vaga: https://discover.selinc.com/l/885633/2026-05-06/qrwb4

Reduce fault-locating time by deploying the LINAM® MC Multiconductor Cable Fault Indicator on underground multiconductor...
06/01/2026

Reduce fault-locating time by deploying the LINAM® MC Multiconductor Cable Fault Indicator on underground multiconductor cables—including paper-insulated lead cable (PILC).

Register for our upcoming webinar to learn how the LINAM MC reliably detects faults and solves the unique challenges of fault locating on underground multiconductor cables. We’ll also discuss best practices for installing the LINAM MC and coordinating fault indicators with protective devices. https://discover.selinc.com/l/885633/2026-05-07/qs2tm

Watch this on-demand webinar to learn how fault indicators work, how the technology has advanced, and why fault indicato...
05/29/2026

Watch this on-demand webinar to learn how fault indicators work, how the technology has advanced, and why fault indicators are an important part of modern power systems. SEL LINAM fault indicator products offer unique features and benefits resulting from more than 75 years of innovation. https://discover.selinc.com/l/885633/2026-01-06/q9phj

Replace legacy transformer relays and upgrade to modern protection and control capabilities with the trusted SEL‑487E Tr...
05/28/2026

Replace legacy transformer relays and upgrade to modern protection and control capabilities with the trusted SEL‑487E Transformer Protection Relay. Now available in smaller form factors, including a 3U version, the SEL-487E provides flexibility for space-constrained panel applications. Learn more: https://discover.selinc.com/l/885633/2026-02-18/qglz1

We’re proud to reintroduce the LINAM® name to SEL fault indicators and product sensors, unifying the product line under ...
05/27/2026

We’re proud to reintroduce the LINAM® name to SEL fault indicators and product sensors, unifying the product line under a name with a 77-year history in the industry.

The LINAM brand began in 1949 with the innovative LINAM Live Line Ammeter, and today it continues with SEL-manufactured products that help utilities keep the lights on for their customers.

Explore the benefits of LINAM products and solutions: https://discover.selinc.com/l/885633/2025-12-03/q6hjx

El SEL-411L ahora es compatible con 87L sobre Ethernet con PRP, mejorando la confiabilidad de operación del esquema de p...
05/08/2026

El SEL-411L ahora es compatible con 87L sobre Ethernet con PRP, mejorando la confiabilidad de operación del esquema de protección diferencial de línea. El SEL-411L también incluye localización de fallas por onda viajera, lo que le permite reducir costos de mantenimiento al dirigir a las cuadrillas directamente a la estructura más cercana a la falla.

Descubra cómo: https://discover.selinc.com/l/885633/2026-04-29/qr8ym

Join us for a webinar to learn about major enhancements to the SEL Blueframe® platform, including newly integrated SEL S...
05/08/2026

Join us for a webinar to learn about major enhancements to the SEL Blueframe® platform, including newly integrated SEL Synchrowave® technologies that enable advanced data visualization and analytics. The webinar will cover the growing portfolio of software solutions on Blueframe:

• Distribution Management System (DMS)
• Device Management and Automation (DMA)
• Wide-Area Monitoring System (WAMS)
• Energy and Power Monitoring System (EPMS)
• Fault Management System (FMS)

Learn more and register: https://event.on24.com/wcc/r/5294916/8412224272C3F0E14F6A5CEF789873BE?partnerref=social1

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