Generator Protection

Advanced measurement, security, and control features are built into every SEL product to ensure that generators are protected, properly metered, and connected to the grid without interruption. SEL generator protection relays are applied in various industrial and commercial settings, such as for standby, emergency, or co-generation.

Industrial & Commercial Protection

SEL power management, protection, automation, and control solutions are hard at work in heavy industries and commercial-scale facilities around the world. These solutions protect low and medium-voltage equipment and help improve system performance, availability, and process efficiency.

Transmission Protection

SEL transmission line protective relays provide reliable sub cycle line current differential and multizone distance protection. Their fault locating capabilities allow you to efficiently dispatch line crews to quickly isolate line problems and restore service faster.

Substation Protection

SEL devices protect, monitor, and control critical assets located in all types of generation, transmission, and distribution substations.

Distribution Protection & Control

The complex demands of distributed generation, renewable resources, and an evolving customer base present challenges to distribution systems everywhere. From protection fundamentals to advanced automation, SEL offers the most reliable and efficient solutions for every section of a utility-, industrial-, or commercial scale distribution system

Fault Indicators, Sensors, and CTs

SEL fault indicators and sensors improve reliability by indicating the fault path to speed up the fault location time and reduce outage duration. Suitable for overhead and underground installations, SEL fault indicators and sensors work in a wide range of applications from overcurrent fault detection to enhancing system protection.

Metering

SEL metering products help operators identify power quality issues and improve energy usage in generation, interchange, transmission, distribution, industrial, and commercial applications.

Automation

Increase system reliability and operation efficiency using SEL automation and computing platforms, which offer scalable and modular solutions for data concentration, protocol conversion, and more. SEL automation solutions allow you to implement a broad set of functionalities or choose a subset and add more capabilities over time.

WAN & LAN Networks

SEL devices combine the connectivity, performance, cybersecurity, and ruggedness required for WAN and LAN applications.

Wireless Communications

Wireless communications extend networks in areas where wired communications networks are not available or are cost-prohibitive. SEL wireless devices use radio signals to communicate and send data over the air, eliminating the need for traditional cabling.

Precise Time

SEL precise timing solutions keep power system devices time synchronized within a microsecond, satisfying demanding applications, like Synchro phasors, Sampled Values, and traveling-wave fault locating, and ensuring that your event reports have accurate timestamps.

Transceiver and Adapters

Many SEL devices come with standard or optional fiber-optic communications ports. Transceivers convert between copper and fiber optics or between other communications interface standards.

Cables

SEL manufactures high-quality cables for connecting a variety of devices. Each cable is quality tested to ensure reliability and proper operation. Choose the cable types and lengths to match your applications using the SEL-5801 Cable Selector program.

Remote I/O

Remote I/O modules transfer data from remote locations over fiber and expand the I/O of SEL relays, automation controllers, and other devices without modification to the control panel face.

Annunciation and Notification

Annunciation and notification devices provide local and remote notification to improve situational awareness, efficiency, and safety.

They display alarm conditions, and their communications ports enable integration with relays and control systems.

Configure-to-Order (CTO) Panels and Retrofit Plates

CTO panels include all the equipment required for their specified function, including protective relays, test blocks, control switches and lockouts, terminal blocks, and miniature circuit breakers. They are also available with automation and communications options, including an SEL Real-Time.

Software

SEL software products help automate and control power systems, optimize device configuration, configure secure operational technology (OT) networks, and collect and visualize power system data.

SEL Compass® keeps software applications and relay configuration drivers up to date and includes SEL instruction manuals, application guides, hardware drivers, and more.

Accessories & Tools

SEL Product & Solution Guide

PT. Royal Energy Resources