The Standalone Universal HDSL units provide high voltage isolation between one, 4-wire Remote Terminal Unit (HTU-R) located inside the substation, and an HDSL Central Office (CO) Terminal Unit (HTU-C) located at the CO.
These units consist of an isolator card mounted inside a compact enclosure. The enclosure is molded from fiberglass, making it a lightweight, flame-retardant container of high dielectric strength. Its fiberglass body limits the possibility of many kinds of infiltration while providing reliable isolation from external ground potentials.
Each standalone unit is shipped with a 10’ insulated 12-conductor cable for connection to the CO’s incoming cable, and mounting hardware.