Synchrophasors

SEL Synchrophasors provide real-time information to help you manage and improve your power system. Advances in technology allow SEL to provide extremely accurate synchronized phasor measurements from across the power system to enable more informed decisions.

MIRRORED BITS^® Communications

SEL developed MIRRORED BITS communications to provide high-speed, secure, point-to-point communication of real or virtual contact-status bits. Protection applications include directional element-based bus protection and replacement of tone-channel equipment for communications-assisted blocking, unblocking, permissive, and transfer trip schemes. Automation applications include high-speed sectionalizing, restoration and interlock schemes, and replacement of large bundles of field wiring with several small optical fibers, lowering costs and improving reliability.

IEEE C37.94 Optical Fiber Links

The safest and most-reliable protection communications schemes in the industry use IEEE C37.94-compliant fiber-optic links between protective relays and telecommunications multiplexers. Optical fibers do not have ground paths and are immune to electrical interference.

IEC 61850

IEC 61850 was created to be an internationally standardized method of communication and integration with goals that support systems built from multivendor intelligent electronic devices, networked to perform protection, monitoring, automation, metering, and control. Combine IEC 61850 technology, Ethernet networking, and SEL high reliability to perform station computing and protection, automation, and control for distance, current differential, distribution, transformer, bus, motor, and bay control applications. Streamline configuration with ACSELERATOR® Architect™ SEL-5032 Software.

Connectorized^® Products

Connectorized products offer the advantage of robust connections while minimizing installation and replacement time. All wiring remains connected to the terminal blocks, so no rewiring or retesting is needed to replace a device.

SEL Technology Improves Safety

Significantly improve safety, prevent injuries, and reduce liability exposure by applying SEL products and services. Do more with remote communication to avoid entering hazardous areas, controlling traffic, and suiting up in special protective clothing.

Cybersecurity

SEL is a leader in securing communications from attackers, for the serial ports on our own products and with a bump-in-the-wire solution for nearly any serial data communications link, including SCADA and engineering access applications. Wireless encrypting transceivers keep personnel out of hazardous areas and allow you to safely add communications links without digging trenches.

Conformal Coating

SEL makes the most reliable products in the industry. Conformal coating provides an additional barrier to harsh environments, such as high humidity and airborne contaminants. SEL offers conformal coating on select products used in demanding locations.