The SEL-AR360 and SEL-AR are self-adjusting fault indicators for overhead lines. They automatically select trip thresholds based on sampled load current and improve system reliability and restoration speed by indicating momentary faults before they become permanent outages. The indicators separately identify permanent and momentary faults using red and amber LEDs and flash patterns. You can apply the SEL-AR360 on distribution systems up to 34.5 kV and the SEL-AR on systems up to 69 kV.
The SEL-AR360 and SEL-AR are quick and easy to install with one hot stick. There are no clamps to disassemble. No extra hardware is needed.
Overhead Fault Location—Apply SEL-AR360 or SEL-AR indicators across your entire overhead system as a single economical solution to reduce fault-finding time and improve reliability metrics. The AutoRANGER logic automatically selects the best trip threshold based on sampled load current and reduces the effort of coordinating fault indicators with various protection schemes. The bright LED display provides high-visibility fault indication, day or night.
Momentary Fault Detection—Improve system reliability by tracking down momentary faults before they become permanent outages. The SEL-AR360 and SEL-AR are equipped with simple-to-interpret displays that provide distinct flash patterns for permanent and momentary faults.
Distribution Circuit Reliability Improvement—Deploy the SEL-AR360 on distribution circuits up to 34.5 kV and the SEL-AR on distribution circuits up to 69 kV.
|Trip Threshold Range||50 to 1,200 A|
|Voltage Range (Phase-to-Phase)||4,160 V to 69 kV||4,160 V to 34.5 kV|
|Maximum Fault Current||25 kA for 10 cycles|
|Trip Response Time||24 ms, nominal|
|Permanent Flash-Clearing Times|
|50 and 100 A Trip Levels||8 hours|
|200 and 1,200 A Trip Levels||4 or 8 hours|
|Temporary Flash-Clearing Times||0, 4, 8, 16, or 24 hours|
|Flash Hours||2,500 hours||1,800 hours|
|Outer Diameter Clamping Range||0.162" to 1.50"|
|Battery||3.6 V high-capacity 8.5 Ah lithium battery with a 20-year life||3.6 V high-capacity 17 Ah lithium battery with a 20-year life|
|Approximate Weight||600 g (1.30 lbs)||840 g (1.85 lbs)|
|Temperature Range||–40° to +85°C (–40° to +185°F)|
The Firmware IDs for older versions of the firmware can typically be found in Appendix A of the instruction manual.