Schweitzer SEL-351 351#207254, Utility Feeder Protection SystemCondition:* New, Open Box. Never Put Into Service. In OEM Packaging. As Pictured* Includes Instruction Manual.Additional Notes:* Offers comprehensive feeder and overcurrent protection for industrial and utility feeder applications.* Provides advanced load shedding with six levels of frequency element sand four rates of change of frequency elements, plus under-/over-voltage protections.* Can apply four-shot reclosing with sequence coordination, synchronism check, and voltage check.* Calculates accurate distance-to-fault measurements using the impedance-based fault locator.* Detects transformer energization with second-harmonic blocking elements. The output from the harmonic detection elements blocks selected tripping elements until inrush conditions subside.SchweitzerSEL-351 351#207254