The Silent conductor is a new development which reduces audible noise and aureole losses. Without fortification of the towers, an adaptation to the limit values of the magnetic field strength, which are required by law, for the existing 400 kV lines can be done.
Irritating optical effects of these large diameter conductors can be removed with a camouflage coating (see Camouflage Conductor resp. Coating of Conductors).
Product Description Silent Hollow Conductor
The conductor is produced with a special construction of ACS, aluminium and aluminium alloy.
The enlarged diameter reduces the border field strength as well as the magnetic field strength. A reduction of the border field strength results in a reduction of the aureole noises.
Despite the enlarged diameters the mechanical and electrical properties are equal or improve.
The special conductor construction ensures the usage of standard clamps.
Mechanical and Electrical Properties
At conductor diameters over 50 mm the border field strength is reduced in 400 kV power lines too and thereby the aureole noise decreases significantly.
|1150||permissible continuous current [A]||1197|
|210||calculated tensile strength [kN]||225|
|764,5||total section [mm²]||617,6|
|2564||total weight [kg/km]||2320|
|82,7||tractive force at -5 °C and AZL *) [kN]||78,8|
|13,96||sag at 40 °C *) [m]||13,96|
|*) span 350 m|
|Invar Conductors||Gap-type Conductors||Steel supported Conductors||Sheat-type Conductors|
|Hot and Black conductors||Camouflage Conductor||Silent Hollow Conductor|
|Stranding of OPGW||Coating of Conductors||Tensile Testing|