The RFL 9511 Adjustable Wide Band Line Tuner is used for coupling Power-Line Carrier (PLC) equipment to a single phase of high-voltage power lines, carrying out the following:
The units can be used for phase-to-ground, phase-to-phase or three phase coupling. One RFL 9511 unit is used for phase -to-ground coupling. Two RFL 9511 units are required for phase-to-phase coupling with the two units being connected together through a differential transformer acting as a hybrid circuit. Three RFL 9511 units and two hybrid circuits are needed for three-phase coupling.