The Underground AutoRANGER's Dynamic Delayed Trip feature improves coordination with upstream protection, maximizing reliable performance.
Underground Fault Detection—Find faults quickly on underground distribution systems with AR-URD Underground AutoRANGERs. Different display options provide flexibility for pad-mounted or vault installations. Line-powered and restoration reset features add reliable performance for any application.
Subsurface Vaults—Expand the benefits of the AR-URD to subsurface vaults using the RadioRANGER Wireless Fault Indication System. The RadioRANGER System allows remote retrieval of the fault indicator status without accessing every vault, minimizing patrol time.
Underground Reliability Improvement—Increase reliability on underground distribution circuits by installing the underground AutoRANGER in the following applications:
|Trip Thresholds||50 to 1200 A|
|Voltage Range||Equal to Voltage Class of Shielded Underground Cable|
|Minimum Operating Current||3 A|
|Current-Activated Timed Reset||0, 2, 4, 8, or 12 hours|
|Battery (for BEACON LED Display Only)||3.6 V High-Capacity Lithium Battery With a 20-Year Shelf Life|
|Trip Response Time||Function of Trip Threshold|
|Inrush Restraint Response Time||5 Cycles|
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