Richwell Engineering LLC remains at the forefront of global advancements in relay protection and automation control systems, continuously introducing innovative technologies and solutions across various sectors in Mongolia. For the first time in the energy system of Mongolia, a differential relay protection solution was introduced along the four-terminal of the 110 kV overhead transmission line, and the SEL-411L relay was installed and commissioned, covering 7 substations that are system generators for Overhead power line (OPL)-109 and SH-110. We proudly pioneered the first-ever differential relay protection solution for Mongolia’s energy system, implemented across a four-terminal 110 kV overhead transmission line. This project included the successful installation and commissioning of the SEL-411L relay, covering seven substations that serve as system generators for the OPL-109 and SH-110 overhead power lines. In addition, we successfully implemented NR Electric's relay protection, automation systems, HMI software, and SCADA monitoring and control solutions at the 110/10kV, 2×40 MVA "Shonkhor" Substation, operated by the National Electricity Transmission Network State-Owned Joint Stock Company. NR Electric is a globally recognized leader with over 20 years of experience in the development of relay protection and automation technologies. We officially provide all services related to the supply, installation, commissioning, testing, and maintenance of NR Electric's relay protection and automation system products. We deliver services for calculation solutions for large-capacity electric energy storage systems and reactive power compensators integrated into the power system, and provide assembly, installation, testing, and adjustment services.