RFL 9512 Line Tuning Unit

The RFL 9512 Line Tuner matches the impedance of the Power Line Carrier (PLC) terminal to that of the high voltage power line in order to reduce the insertion lossof the transmission of PLC signals over the power line. In addition, isolation form the power frequency volatage and transient overvoltages is provided.

• The RFL 9512 line tuner can be used with PLC communications systems connected to coupling capacitors having a capacitance between 2,000 to 10,000pF.
• Conforms to the requirements of IEC 60481.
• Peak envelope power (PEP) rating is 400 Watts.• Available in either High Pass or Band Pass filter configurations.
• The RFL 9512 is used for pahse-to-ground coupling. Phase-to-phase versions are also available.
• All weather enclosure with stainless steel hardware.

The high-pass or band-pass circuit consists of a drain coil, inductors, and capacitors. A matching transformer provides potential insulation between line side and equipment (cable) side, and provides the means to make the power line impedance match that of the PLC terminal. The power frequency current derived from the coupling capacitor is drained to ground by the integrated drain coil. Limitation of voltage surges coming from the power line at the HV terminal of the tuner is performed by a lightning arrestor connected in parallel with the drain coil. The line tuner will be short-circuited to ground with the grounding switch is closed.