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Several classification of overhead transmission lines

Several classification of overhead transmission lines:

1. By voltage level

It is divided into 10kV, 35kV, 66kV, 110kV, 220kV and 500kV transmission lines. The voltage level of 35kV is mostly used in wind farms. The voltage level is the best cost performance based on the capacity and the transmission distance of the single circuit transmission line. Besides, there are HVDC transmission lines and EHV AC transmission lines.

2. By the number of loops on the tower

(1)A single loop line

There are only three phase conductor and overhead ground wire transmission line on the tower.

(2)The double circuit line

There are two transmission lines with three three-phase conductors and overhead ground wires on the tower, which are divided into two cases: the same pole and the different pole.

(3)The multi loop line

There are three or more three-phase and overhead transmission lines on the tower.

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