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Substation Equipment: Power-line Carrier

Power-line Carrier
A power line carrier is communication equipment that operates at radio-frequencies, generally below 600 kilohertz, to transmit information over electric power transmission lines.  A high frequency signal is superimposed on the normal voltage on a power circuit. The power line carrier is usually coupled to the power line by means of a coupling capacitor in conjunction with a line trap.

A device for producing radio-frequency power for transmission on power lines.

Figure 1. Power-line carrier schematic
Figure 1. Power-line carrier schematic
Figure 2. Power-line carrier device in control house
Figure 2. Power-line carrier device in control house
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