html{display:none} SEL-TR Underground Timed-Reset Fault Indicator | Schweitzer Engineering Laboratories

SEL-TR

Underground Timed-Reset Fault Indicator

The SEL-TR is a timed-reset faulted circuit indicator (FCI) that provides indication for both momentary and permanent faults. It automatically resets at the end of a fixed-reset period, allowing time for crews to locate faults. You can apply the SEL-TR in underground distribution systems with low load and low voltage, and it is ideal for locations where false reset from backfeed is a concern.

The SEL-TR is available with a clamp-on timed-reset sensor or a test point timed-reset sensor for single- and three-phase applications. You can choose from a variety of remote display options that eliminate the need to access an enclosure cabinet or subsurface vault to determine the indicator’s status.

Accessories and Tools for Fault Indicators and Sensors

Starting At

$153

Request a Follow-Up

(0/250)

*Required

Request a Follow-Up


Fault Troubleshooting—Apply the SEL-TR on distribution circuits to troubleshoot momentary and permanent faults. The SEL-TR provides identical indication for both momentary and permanent faults. The SEL-TR will hold the tripped status indication for a set time, regardless of the presence of current or voltage on the distribution circuit. SEL-TRs continue to lead crews to the fault location even after power is restored.  

Timed-Reset Intervals—A factory-set 2-, 4-, or 8-hour timed-reset interval will automatically reset the SEL-TR. You can also manually reset the units using the CRSRTT magnet tool. 

Industrial Backfeed—Circuits feeding large industrial equipment and rotating machinery can contribute energy into a fault past the FCI’s location within the fault path. Sometimes this energy is sufficient to reset a current or voltage reset-type FCI, misleading crews searching for a fault. You can use the SEL-TR in applications with backfeed to ensure FCIs in the fault path continue to display their fault indication for the timed-reset period, regardless of the duration or magnitude of the backfeed condition.

Details

Remote displays eliminate the need for line crews to open high-voltage enclosures or enter subsurface vaults during fault-finding patrols. The SEL-TR is compatible with a variety of remote display options:

  • BEACON Bolt “B” display
  • Standard “V” display
  • Large “L” display
  • SEL-8310 RadioRANGER Remote Fault Reader “M”
_FIS Displays

The Firmware IDs for older versions of the firmware can typically be found in Appendix A of the instruction manual.