SOLUTIONS

Fault Indicators and Sensors

Locate faults, reduce outage time, and enhance protection.

Improve distribution system reliability by using SEL fault indicators and sensors to identify faulted line sections and implement protection solutions, such as source transfer schemes, fast bus tripping, and coordinated trip blocking.

Our Solutions

Detect faults, accelerate restoration, and guide faster repairs to improve power system reliability.
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Customer Highlights

Case studies, project highlights, and in-depth stories showcase our customers’ success.
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Our Support

We strive to be not just a vendor, but a partner you can rely on.
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Our Solutions

Quickly identify faulted line segments and enable advanced protection solutions by deploying fault indicators and sensors on feeder lines, at overhead-to-underground transitions, and in pad-mounted and subsurface installations throughout your distribution system.

Traditional Fault Indication

Minimize outage durations by deploying advanced, highly reliable LINAM fault indicators to identify faulted line segments.

Overhead Applications

Improve fault indication reliability with fault indicators that automatically select trip thresholds based on sampled load current. With visual indicators for both permanent faults and momentary faults, these devices help line crews locate faults and remove the sources of momentary faults before they become permanent.

Underground Applications

Identify faults in underground cable sections by applying fault indicators in pad-mounted installations and within subsurface vaults and maintenance holes.The LINAM UGFI Underground Fault Indicator has the best adjacent-phase immunity in the industry and a suite of features that allow you to apply it throughout your distribution system. The LINAM MC Multiconductor Cable Fault Indicator is specifically designed for paper-insulated lead cable (PILC) and other bundled cable applications.Connect underground fault indicators to our RadioRANGER system to enable personnel to read the status of a subsurface device at street level or use remote display options to indicate fault status at a convenient location for line crews.

Related Products

Overhead:Underground:From our knowledge base:

Protection-Speed Wireless Fault Transmitters

The SEL Wireless Protection System transmits fault status at protection speed, helping relays make better tripping and reclosing decisions based on the location of a fault. Deploy this cost-effective, easy-to-install solution at key points in your distribution system to:
  • Block reclosing for underground faults.
  • Enable fast bus tripping.
  • Coordinate recloser trip blocking in high-density applications.
  • Communicate fault status to SCADA and an advanced distribution management system.

Related Products

From our knowledge base:

Wireless Fault Indication System

Locate faults faster and make informed switching decisions with a wireless fault indication system that transmits fault and load data.The line-powered LINAM FLT Fault and Load Transmitter requires no maintenance. It indicates both momentary and permanent faults with bright LEDs and sends sensor data to the LINAM FLR Fault and Load Receiver. The FLR receives fault and load data from FLT transmitters within its line of sight and passes the data to other connected devices and/or a SCADA system. It can be installed in existing cabinets or ordered with a pole-mounted enclosure that contains all the necessary components. The optional enclosure includes an uninterruptible power supply and backup battery, as well as space to install an SEL-3505-3 Real-Time Automation Controller (RTAC) to enable local automation schemes.

Related Products

From our knowledge base:

Voltage Detection

The LINAM TPVS Test Point Voltage Sensor provides a reliable, economical voltage monitoring solution for automatic source transfer schemes. Key features include self-calibration, selectable testing and operating modes, and self-monitoring. Compact and rugged, it is also well-suited as an OEM component in source-transfer switchgear.The LINAM VIN indicates the presence of system voltage to ensure safety.

Related Products

From our knowledge base:
Fault Indicators and Sensors

Find detailed information on all SEL fault indicator and sensor products.

Customer Highlights

Wireless Protection Communications—Innovating to Improve Reliability
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Distribution Modernization in Kentucky
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Our Support

Proven Reliability and Lifetime Support

Every SEL solution comes with the most reliable devices in the industry and a ten-year warranty —plus no-cost technical support for SEL products and systems.

Rugged and Reliable, Guaranteed

Every SEL-manufactured device comes with a ten-year warranty. If it fails under warranty, repair and replacement are free.Our products are designed to withstand harsh operating environments, enduring temperature ranges as wide as –40° to +85°C (–40° to +185°F) and exceeding industry standards for resistance to conditions such as humidity, corrosion, shock, electric stress, and electromagnetic interference. All SEL electronic products are designed, tested, and manufactured in North America, in facilities that we own and operate. We practice secure supply chain management, and our quality management system is certified to ISO 9001 requirements.

Lifetime Product Support

We provide technical support for the entire life of your SEL products, even if they’re outside of our ten-year warranty.No matter how long your SEL products have been in service, you’ll reach an SEL expert who can provide the service and support you need. SEL support teams are stationed in regional offices around the world and staffed with application engineers who are experts in our products and in power system applications.And with IACET-accredited training and continuing education from SEL University, you can ensure that your system operators and engineers have all the knowledge they need.Warranty and Technical Support

Cybersecurity Bulletins and Updates

We provide cybersecurity bulletins and updates for the full lifetime of every product we manufacture. SEL end-user customers can sign up to receive emailed notifications of security service bulletins affecting SEL products to help them keep their systems secure.Sign Up for Security Notifications SEL Process for Disclosing Security Vulnerabilities

Questions? Contact Us!

If you have any questions about SEL products, services, solutions, or support, please contact us. Our service and support professionals are ready to provide the answers you need.

Unbeatable Support

SEL support teams are stationed in regional offices around the world and staffed with application engineers who are experts in our products and in power system applications.

Technical support for SEL-manufactured devices is always complimentary. No matter how often you need to call or how long your SEL products have been in service, you’ll reach an SEL expert who can provide the service and support you need.

Our cybersecurity team is always ready with the information and resources needed to keep your OT networks and critical systems secure and working effectively. Cyber services support contracts can include incident response, audits, system hardening, and more, depending on your anticipated needs.

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