scope:

This standard applies to power-line carrier (PLC) line-tuning equipment connected between the coupling capacitors and PLC transmitter/receiver terminals operating in the frequency range of 30 kHz to 500 kHz over power transmission lines and cables or to similar line-tuning equipment in a carrier bypass. PLC linetuning equipment includes assemblies and components: tuning inductor, impedance matching transformer, balancing transformer, tuning capacitor, inductance-capacitance (LC) tuning unit, hybrid, filter, protective unit, interconnecting cables, and enclosure. This standard includes the protective devices that facilitate the safe operation and maintenance of the line-tuning components under normal and usual operating conditions. This standard will develop technical definitions, performance ratings, testing methods, and manufacturing requirements for the included line-tuning equipment.

Purpose

This standard is vital to the application of PLC systems (30 kHz to 500 kHz) on all transmission lines. PLC systems are used for protection systems and other communications. The line tuner is the part of the system that allows the carrier signal to reach the power line with the minimum of loss. Requirements will be established so that the types of tuners and their interaction with the power system are known and performance can be predicted.