The conductor rail is a special power transmission system installed along the tramway to provide electric energy for the train. The conductor rail is a form of contact net, also known as the third rail. Its function is the same as that of the overhead conductor rail, and it is used to transmit electric energy to the EMU. The difference is that the conductive rail is a special track set beside the tram track, and the tram obtains electric energy through contact with the extended third rail contact shoe.
Kingrail Parts is a professional rail manufacturer. Our conductor rails are constantly updated as technology develops.
Our conductor rail materials are developed from low carbon steel materials to steel-aluminum composite materials. In addition to traditional electric porcelain, materials such as epoxy resin and silicone rubber have also been developed for insulating brackets. Conductor rail protective cover is developed from wood material to fiberglass material.
The installation method of our conductive rail has developed from the upper contact current collection method to the coexistence of the upper contact and the lower contact current collection method, and has a tendency to develop towards the direction of lower contact current collection.
Low carton steel conductor rail
Traditional conductor rails are made of mild steel material. Because of its wear resistance, low price, simple installation, and stable performance, it has been widely used around the world in the early days of the popularization of the three-rail method.
Technical parameters of low carbon steel conductive rail system for Beijing subway tram track:
|Technical parameters of low-carbon steel conductive rail system for Beijing subway tram tracks|
|Third rail model||JU-52|
|Third rail cross-sectional area||6543mm²|
|Third rail standard length||12.5m|
|Unit resistance (at 15℃)||0.125Ω▪mm²/m|
|Insulator material||Electric porcelain|
|Protective cover material||Wood board|
|End elbow length||2300mm|
Steel-aluminum composite conductor rail
Steel-aluminum composite conductor rail is a hot-selling conductor rail from Kingrail Parts.
The overall structure of the steel-aluminum composite conductor rail is mostly similar to the standard rail. Although some shapes are more complicated than the standard rail, it is generally composed of three parts: the rail head, the rail waist, and the rail bottom.
The material of the contact part between the rail head and the contact shoe of the third rail is generally stainless steel, and the rail body is made of aluminum alloy. The thickness of the stainless steel strip of the steel-aluminum composite conductor rail produced by our company is generally 2-6mm, and the chromium content of the stainless steel is generally 17-19%. According to the requirements of different conductor rail systems, the cross-sectional area of steel-aluminum composite conductor rails has 2750A, 3500A, 3800A, 4500A, 4700A and other specifications.
Steel strip thickness 6mm steel-aluminum composite conductor rail technical parameters.
|Parameter name||Unit||Technique data|
|Nominal cross-sectional area||Aluminum track||mm²||3850|
|Calculate cross section||mm²||4400|
|Modulus of section||mm³||108856|
|Inertia moment (horizontal and vertical)||mm4||Horizontal||21.5×105|
|Contact surface roughness||Ra: 6.3μm|
|Thickness of the steel strip||mm||6|
|20℃ DC resistance||Aluminum track||Ω/Km||0.00814|
|20℃ contact resistance of steel and aluminum||mΩ/Km||Rail end||＜0.015|
|200 from rail end||＜0.00081|
|Aluminum composite rail self-inductance||MH/Km||1.021|
|Temperature coefficient of resistance||Ω/℃||＜0.004/℃|
|Linear expansion coefficient||1/℃||21.48×10-6|
|Wear loss||mm/one million time||≤0.049/70|
|Maximum temperature tolerance||℃||100|
According to different requirements, the steel-aluminum composite three-rail rails sold by our company mainly include:
1. C-type steel aluminum composite third rail
2. Double-clad steel aluminum composite third rail
3. Outer-clad steel aluminum composite third rail
Conductor Rail System
The conductor rail system is the only source of power for the tramway system. Its main structure is composed of third rail, insulating support, end elbow, expansion joint, protective cover, intermediate joint, central anchor, electric connection and grounding wire.
Kingrail Parts can provide a complete set of conductor rail systems and accessories.
Please contact us if you need to buy conductor rails. Our experts will give you the best advice.