The 5-card CCC Isolator Shelf Model 751112/15 houses eight plug-in isolator service cards. The shelf is molded from specially treated polyurethane resulting in a lightweight, flame retardant product of high dielectric strength. The moulded polyurethane body limits the possibility of many kinds of infiltration while providing reliable isolation from external ground potentials.
|Enhanced 5-card CCC Shelf
The shelf is equipped with the connectors for any of the plug-in cards from the Teleline Isolator line of products. The shelf has a separate space to accommodate a plug-in power supply card Model 751313MC (120 Vac /130 Vdc to -24 Vdc), a Battery Backup Card, Model 751312 to provide -24 Vdc uninterruptible power supply (UPS), 751318MC (120 Vac/130 Vdc to -48 Vdc), or the Model 751319MC (48 Vdc to -48 Vdc). If the Battery Backup is not used, then two Power Supply Cards may be installed for redundancy or to have both -24 Vdc and -48 Vdc available in the shelf.
The shelf is shipped with a Station cable stub for connection to substation communications equipment, a Polyethylene Insulated Cable (PIC) stub for connection to the Central Office (CO) incoming cable, and a power cable.
The CCC designation means that the shelf follows the telecommunication industry’s Color Coding Convention for cable-pair designations.
For HDSL and T1 applications requiring a network interface on the station-side of the isolator, Positron’s latest shelves and isolator cards superimpose Station-side Span Power voltage directly across the Station-side Tip and Ring pairs with power derived from the -48Vdc output of the plug-in power supplies, such as the 751318MC and 751319MC. 751318MC.
Overall cost of the installation is reduced and simplified because the need for a dedicated power supply to drive the HDSL or T1 termination units is eliminated.
The Mode #751109/15 CCC 5-card shelf can accommodate two plug-in power supplies simultaneously, allowing:
CSA 60950-1 (Certified to Can/USA standard 60950-1), FCC part 15, FCC part 68