The Teleline Isolator 5-card Shelf HVI Cabinet Assembly, Model 751960/15CU5 provides a safe, reliable, cost effective solution for isolating wireline communication circuits entering sites susceptible to high voltage influences due to Ground Potential Rise (GPR) caused by lightning and/or power faults. The NEMA 4X rated, non-metallic, lockable cabinet assembly is suitable for outdoor installation.
This HVI assembly offers the additional feature of single 4-slot DTWA mounting pre-wired into the Station-side connections. Housing NIU plug-in cards, the DTWA is connected between the Station Side of the Teleline Isolator shelf and the Station Side solid-state secondary protector block, providing protection to the NIU from differential mode electrical disturbances that can occur on the Station Side communication pairs inside the substation.
|Single 5-card Shelf HVI Cabinet
w/Integrated 4-slot NIU Shelf
The Teleline Isolator offers 70kV peak, 50kVrms protection on each communication circuit, while permitting continuous communications before, during, and after a GPR event.
This HVI backboard assembly provides high voltage isolation for ten (10) cable pairs entering a site and features the following: