The SEL-TPR is an underground faulted circuit indicator (FCI) that attaches to capacitive test points in single- or three-phase systems. It replaces the protective cap on capacitive test points, acting as the new cap with the added benefit of providing fault indication. The SEL-TPR eliminates the need to account for the position of the concentric neutral, as is common with cable-mounted FCIs, and automatically resets upon system voltage restoration.
The SEL-TPR is easy to install with any industry-standard hot stick and the molded rubber hook eye. Powered by voltage, the SEL-TPR does not have a minimum load current requirement, making it great for lightly loaded circuit applications.
For basic insulating plug (BIP) applications, the SEL-TPR offers a model option that works for 600 A applications without a test point on the T-body.
Easy, Cost-Effective Solutions—Choose the most cost-effective fault indicator in the industry for elbow test point applications. The SEL-TPR is easy to install on most brands of 200 A- or 600 A-class elbows with capacitive test points and is ideal for pad-mounted transformer and switchgear applications.
BIP Without a Test Point—Select the SEL-TPR model option for a BIP voltage reset boot. This model works for 600 A applications without a test point on the elbow or T-body. It receives power and resets from the BIP voltage and senses the fault current with three cable-mounted sensors.
Fault Indicator for Wind Farms—Determine the fault location and restore operations in wind farm collector systems. Wind turbine outputs are fed through a transformer and distributed overhead or underground to a collector substation. The voltage will then be stepped up by the collector substation transformer to the utility transmission voltage. A single fault can disable from one to an entire line of turbines. SEL-TPRs help operations personnel quickly determine the location of the fault, isolate the faulted section, and restore the balance of the wind farm.
Solar Photovoltaic Plants—Apply the SEL-TPR in solar photovoltaic plants that use terminations equipped with capacitive test points located on the T-body of 600 A terminations.
Single- and Three-Phase Feed-Through Pad-Mounted Transformers—Monitor the cable in feed-through transformers to quickly identify faults, including those caused by dig-ins, aging cables, and wildlife.
Junction Cabinets—Speed up FCI deployment in junction cabinets on elbows and T-bodies with test points. The SEL-TPR’s simple installation is ideal for the space constraints and large number of cables in the cabinets.
Low Load Current—Install the SEL-TPR model option for a BIP where there is insufficient load current to power a current reset fault indicator. The SEL-TPRs use voltage for power and reset.
Auxiliary contact options provide an economical way to indicate status to SCADA systems, and you can choose from a variety of remote displays. (Please note, the SEL-TPR for BIP applications is only available with the standard “V” display.)
You can choose from a variety of remote displays:
|General||SEL-TPR||SEL-TPR for BIP Applications|
|Power Source||Test point voltage||BIP voltage|
|Nominal Trip Ratings||60 to 1,200 A||1,200 A and 1,500 A|
|Elbow Voltage Class||15 kV and 25 kV||35 kV||35 kV|
|Reset Voltage (L-N)||≥6 kV||≥7 kV||N/A|
|Reset||Automatic at minimum voltage||Automatic on restoration of primary voltage|
|Reset Time||3 minutes typical, dependent on system voltage|
|Maximum Fault Current||25 kA|
|Trip Response Time||1 ms (optional 24 ms with delayed trip)||24 ms delayed trip|
|Inrush Restraint Response Time||300 ms|
|Elbow Style||200 A- or 600 A-class with test point||600 A-class T-body with BIP|
|Housing Material||Conductive EPDM rubber|
|Clamping Range||N/A||0.75" to 2.10" or 1.8" to 2.5"|
The Firmware IDs for older versions of the firmware can typically be found in Appendix A of the instruction manual.