The Universal HDSL Standalone Isolator units provide 50kV RMS, 70kV Peak high-voltage isolation between one 4-wire Remote HDSL Terminal Unit (HxTU-R) located inside the substation, and an HDSL Central Office (CO) Terminal Unit (HxTU-C) located at the CO.
These units consist of an isolator card mounted inside a compact fiberglass enclosure. The enclosure is lightweight and flame-retardant with 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’ PVC insulated 6-pair CMAW cable for connection to the CO’s incoming cable. Both the 751239R2 and 751239SP units can be configured for 1 x 4-wire operation, 1 x 2-wire operation or 2 x 2-wire operation. As such both units can accomodate HDSL, HDSL2 and HDSL4. The 751239R2 can be used for G-SHDSL applications. The 751239SP version comes complete with a multi-input to -48Vdc power supply with battery-back-up enabling the unit to reproduce network Span Power to drive the HDSL HxTU-R located at the substation. The 751239SP can be used with or without the Span Power option.