Schweitzer Engineering Laboratories (SEL) operates within the Computers and Technology sector, focusing on providing solutions for operational technology (OT) environments, particularly in the context of electrical substations. The company publishes application notes and case studies that address troubleshooting and communication protocols relevant to OT. Their documentation highlights the fixed characteristics of devices and communication paths in substations, emphasizing the importance of continuous monitoring and anomaly detection to ensure reliable operations. SEL’s protective relays are noted for their ability to collect and analyze power system disturbances, utilizing software tools like SEL-5601-2 SYNCHROWAVE® Event Software to assist engineers in understanding power system behaviors. Additionally, the company provides practical tips and case studies that further explore the implementation and effectiveness of their technology in real-world scenarios. Through these documents, SEL demonstrates its expertise in electrical engineering and communication technologies, contributing to the optimization of power system operations.