Arizona Public Service (APS) has installed a NxtPhase 3-phase 230 kV NXVCT, on L-PRO Line Protection Relay and a TESLA fault recording system at the Deer Valley Substation in Phoenix. This installation tests, among other things, the performance of the NXVCT for protection applications by using the L-PRO’s unique ability to accept and operate on both optical and conventional signals. The NXVCT and the L-PRO both performed correctly during a severe fault at the substation.
Protection, Signals, System configuration
