LINAM Fault Indicators and Sensors

Time-tested. Future-focused.

Discover how LINAM fault indicators and sensors from E. O. Schweitzer Manufacturing combine decades of proven reliability with modern technology to meet the challenges of todays distribution systems.LINAM products have supported utility operations for more than 75 years, beginning in 1949 when Dr. Edmund O. Schweitzer, IIIs father, Edmund O. Schweitzer, Jr., released his innovative Live Line Ammeter—and today, we’re advancing the LINAM legacy by reintroducing the name to our entire line of fault indicator products.

Locate Faults Faster

Whether applied in overhead, underground, or hybrid systems, LINAM products enable faster fault locating and system restoration. With overhead fault indicators that communicate fault status wirelessly, you can block reclosing for underground faults, quickly identify faulted line sections, and coordinate trip blocking in close-proximity recloser deployments. Underground fault indicators with remote displays and an optional handheld wireless fault reader remove the need to enter underground vaults or open potentially energized enclosures to verify fault status.

Simplify Deployment and Reduce Maintenance Cost

LINAM fault indicators reduce installation time, make fault indicator deployment less disruptive, and save maintenance time and cost. Innovative fault detection technology provides industry-leading adjacent-phase immunity and prevents false indication. Features like split-cuff design and universal clamps make installation easier by eliminating the need to disconnect cables. Single hot-stick installation keeps crews safe. Line-powered, battery-free products lower the cost of ownership by eliminating battery maintenance.
An above ground fault indicator on a power line flashing

Solve Emerging Grid Challenges

LINAM products and technologies help utilities and industries build resilient distribution networks by targeting problems that have previously been difficult to solve.
  • Minimize the time your crews spend investigating false alarms by deploying an underground fault indicator with innovative adjacent-phase immunity technology that prevents false indications.
  • Achieve economical and reliable voltage detection with test point voltage sensors for switchgear.
  • Enable relays to make tripping and reclosing decisions based on fault location by deploying a wireless sensor system that detects and reports faults at protection speed.