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Overhead lines mainly refer to overhead open lines, which are erected above the ground and are transmission lines that use insulators to fix transmission conductors on towers standing on the ground to transmit electrical energy.
Overhead cable (full name of overhead insulated cable), is equipped with insulation layer and protective sheath of overhead conductor, using a kind of special cable similar to cross-linked cable production process, is between the overhead conductor and underground cable between the new transmission mode.
A low-voltage power cable is a type of power cable. It is suitable for fixed laying in AC 50Hz, rated voltage 3kv and below transmission and distribution lines for transmission of electric energy.
Low voltage variable frequency power cable
The variable frequency cable is mainly used for the connection between the variable frequency power supply and the variable frequency motor, as well as the transmission and distribution lines with a rated voltage of 1KV and below.
Definition of high voltage line: According to GB/T2900.50-2008, definition 2.1 stipulates that high voltage line usually refers to transmission line with voltage above 10KV (including 10KV), and high voltage usually does not include 1000V.
High voltage variable frequency power cable
3.6/6kV to 26/35kV. This product is used for AC 50Hz rated voltage 26/35kV and below the transmission and distribution lines.