The line trap is an important equipment in series with high voltage transmission line, and forms a channel transmitting carrier-frequency signal of PLC communication and tele-protection. It prevents carrier frequency signal from transmitting toward unnecessary direction, restrains the tapping effect of the substation to the PLC system and transmits power frequency current at the same time.
In general, the line trap consists of main coil, tunning device and protective device. The open type line trap earns a reputation of reliable stable performance with low weight and easy maintenance. Its technical features include the multilayer structure of the main coil, and anti-overvoltage shock and fully enclosed water-proof structure of the tuning component.