<style>html{display:none}</style> <meta http-equiv="refresh" content="0.0;url=/error/nojs.html"> Fault Indicators and Sensors

Fault Indicators and Sensors

Fault Indicators and Sensors

SEL designs and manufactures fault indicators and sensors, supplying utilities around the world with products that help reduce fault-finding time so that power can be restored quickly after a fault occurs. SEL is the electric power industry's leader in fault indicator technology, producing the widest variety of fault indicator products.

Request more information


*Required


Find Rep By Location

Advantages of SEL Fault Indicators

  • They help utilities restore service faster.
  • They reduce fault-finding time by 50 percent.
  • Compact, lightweight construction simplifies installation.
  • Strong, simple clamping mechanisms fit various conductor sizes, ensuring fast, reliable installation.
  • Displays are easy to spot and read and require fewer holes to be drilled in a transformer cabinet for installation.
  • Any SEL fault indicator that uses batteries relies on patented technology, offering the longest cumulative flashing-hour life in the industry. 
  • Require little, if any, maintenance.
  • Magnetic cable guides keep remote display and sensor wiring neatly in place.
  • Standard and custom solutions are available.

Videos

Flashing LED Fault Indicators

Watch Video New
Flashing LED Fault Indicators

SEL Quality

Watch Video New
SEL Quality

SEL Reliability

Watch Video New
SEL Reliability

System Components

item.image[0].img.alt

Overhead Fault Indicators

SEL offers a variety of fault indicators for use on unfused taps, long feeders with midline reclosers or sectionalizers, overhead to underground transitions, and feeders that experience recurring faults.

Choose from manual, timed, or automatic reset models and line- or battery- powered options. Easy-to-install and maintenance-free, SEL fault indicators help identify and locate temporary and permanent faults faster, enabling the utility to make repairs and restore power faster.

item.image[0].img.alt

Underground Fault Indicators

SEL offers a variety of fault indicators for use on subsurface or pad-mounted transformers, subsurface or pad-mounted switchgear and sectionalizing cabinets, junction boxes, and splices. Choose from single-phase underground or three-phase underground (single-phase sectionalized or three-phase sectionalized), depending on your application. Select from manual, timed, or automatic reset models and cable- or battery-powered options. An auxiliary contact option provides SCADA compatibility. SEL fault indicators help identify and locate temporary and permanent faults faster, enabling the utility to make repairs and restore power faster.

item.image[0].img.alt

WSO

Apply the WSO wireless sensors for overhead lines to improve distribution system reliability by remotely monitoring circuits for faults and outages. Using centrally reported data, dispatch repair personnel directly to the faulted line section, reducing outage durations by up to 50%. Users can also periodically log circuit load data for system analysis and remotely monitor the system.

item.image[0].img.alt

SEL-8301

The SEL-8301 Underground Distribution Sensor is designed to optimize outage management and improve underground reliability. With a line current measurement accuracy of 1.5 percent, it allows for more effective switching decisions, letting you restore power to more customers. Using a wireless network, the SEL-8301 sends fault, load current, and water depth information to your control center for efficient dispatching of repair crews and reduced outage durations.

item.image[0].img.alt

RadioRanger

Winner of UTC 2007 Best Wireless Equipment award. The RadioRANGER solution reduces the need to access vaults to retrieve Faulted Circuit Indicator status, reducing fault-locating time and improving utility personnel safety.

item.image[0].img.alt

Tools and Sensors

SEL tools and sensors may be used in conjunction with SEL fault indicators or as stand alone devices.

Applications

Open, enter, and pump multiple underground valuts to find a fault

RadioRANGER Wireless Fault Indication System with Underground RadioRANGER Fault Indicators

Paper-Insulated Lead Cable (PILC) in system requires thumping to locate faults

PILC fault indicators with wide range of sizes and configurations.


Literature