LINAM TR
Underground Timed-Reset Fault Indicator
The LINAM TR 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 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 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 status of the indicator.
Starting At
$315Fault Troubleshooting—Apply the TR on distribution circuits to troubleshoot momentary and permanent faults. The TR provides identical indication for both momentary and permanent faults. The TR will hold the tripped status indication for a set time, regardless of the presence of current or voltage on the distribution circuit. 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 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 location of the fault indicators within the fault path. Sometimes this energy is sufficient to reset a current or voltage reset-type fault indicators, misleading crews searching for a fault. You can use the TR in applications with backfeed to ensure fault indicators 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.
Related Materials
Details
Remote displays eliminate the need for line crews to open high-voltage enclosures or enter subsurface vaults during fault-finding patrols. The 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”
Some configurations, such as those with an LED or timed-reset feature, may contain a battery. For configurations with a battery, please see the lithium metal battery warning.
The Firmware IDs for older versions of the firmware can typically be found in Appendix A of the instruction manual.