CT Series Copper Contact Wire
Specifications
| Model | CT series |
|---|---|
| Standard | GB/T 12971.1-2023, Contact wires for electric traction — Part 1: Copper and copper alloy contact wires |
| Rated Voltage | For 25kV AC traction power supply systems |
| Design Speed | Up to 200km/h (conventional and speed-raised lines) |
| Operating Temperature | -40℃~+70℃ |
| Altitude | <4000m |
| Materials | Hard copper (pure copper) |
| Installation | Installed in the contact suspension system, used with tension compensation devices |
CT series copper contact wire is a key current-conducting component of the electrified railway overhead contact system; its performance directly affects pantograph current collection quality and power supply reliability. Terms and definitions: the contact wire runs above the rails, remains in contact with the pantograph strip and conducts current, with left-right symmetric suspension grooves in the upper cross-section. As the continuous conductor that touches the pantograph strip and carries traction current, copper contact wire has symmetric grooves for reliable clamping and stable current collection.
Application: conductor for overhead contact systems of electrified railways, suitable for conventional and speed-raised railway contact suspensions, and can be combined with messenger wires, droppers and various clamps into a complete contact suspension.
Available models: CT65, CT85, CT85(T), CT100, CT110, CT120, CT150, selectable by line tension and current collection requirements.
Standard: GB/T 12971.1-2023, Contact wires for electric traction — Part 1: Copper and copper alloy contact wires. Note: the railway industry standard TB/T 2809-2026, Copper alloy contact wires for electrification railway OCS, has removed the pure copper contact wire type; for railway projects please choose alloy contact wires such as CTM/CTS/CTA/CTCZ. This series applies to general traction power supply scenarios procured under GB/T 12971.1-2023.
Henan Chuangwit Railway Equipment Co., Ltd. supplies the full range of OCS conductors and associated fittings, supports volume procurement and customized supply, and provides selection consulting and end-to-end technical support for railway construction organizations. Hotline: 0375-6051688.
Main sizes of CT series copper contact wire (GB/T 12971.1-2023, grooved type):
| Model | Nominal cross-section mm² | Calculated cross-section mm² | Ultimate tensile force kN ≥ | Elongation % ≥ | Resistivity at 20℃ Ω·mm²/m ≤ |
|---|---|---|---|---|---|
| CT65 | 65 | 65.2 | 24.20 | 3.0 | 0.01768 |
| CT85 | 85 | 85.4 | 29.75 | 3.0 | 0.01768 |
| CT85(T) | 85 | 86.8 | 32.25 | 3.0 | 0.01768 |
| CT100 | 100 | 100.1 | 34.61 | 3.0 | 0.01768 |
| CT110 | 110 | 111 | 39.96 | 3.0 | 0.01768 |
| CT120 | 120 | 121 | 43.56 | 3.0 | 0.01768 |
| CT150 | 150 | 151 | 54.36 | 3.0 | 0.01768 |
Table values are compiled from current national and railway industry standards; ordered parameters are subject to the latest published standard edition and the supply technical agreement.
Product Overview
CT series copper contact wire is designed and manufactured by Henan Chuangwit Railway Equipment Co., Ltd. to railway industry standards. As a contact conductor for overhead contact systems of electrified railways, it offers excellent conductivity and wear resistance for conventional and speed-raised railway contact suspensions.
Key Features
- Conductivity at least 97% IACS with strong current-carrying capacity
- Wear-resistant and fatigue-resistant with a long service life
- Supplied to match the standard tension system of GB/T 12971.1-2023
- Proven on conventional and speed-raised lines with complete sizes from 65 to 150 mm2
Compliance & Quality Control
The product complies with GB/T 12971.1-2023, Contact wires for electric traction — Part 1: Copper and copper alloy contact wires; tensile strength and elongation meet the standard, and wire fatigue performance and straightness meet pantograph current collection requirements. Conductivity is at least 97% IACS (pure copper), and ampacity satisfies traction power supply calculations. The company holds CRCC railway product certification and ISO9001 quality management system certification; every reel (batch) is delivered only after passing factory inspection.
Operating Conditions & Typical Applications
Suitable for high-speed, conventional-speed and urban rail OCS, enduring long-term current loading, vibration and atmospheric corrosion. Typical applications include high-speed railways, conventional and heavy-haul railways, urban rail transit and coastal corrosive environments.
Selection & Service
Backed by 15 years of R&D and manufacturing experience in railway electrification equipment, the company provides full life-cycle support covering selection, customization, supply and after-sales service, serving more than 20 railway administrations and multiple urban rail lines nationwide. For technical documentation and purchasing, please call 0375-6051688.
Performance
Operating Conditions
Suitable for high-speed, conventional-speed and urban rail OCS, enduring long-term current loading, vibration and atmospheric corrosion.
Mechanical Performance
Tensile strength and elongation meet the standards; wire fatigue performance and straightness meet pantograph current collection requirements.Electrical Performance
Conductivity at least 97% IACS (pure copper); ampacity satisfies traction power supply calculations.Applications
High-Speed Railways
CT series suits contact suspensions of conventional and speed-raised lines; for high-speed sections choose copper alloy contact wires (CTA/CTS/CTM/CTMH series).
Conventional & Heavy-Haul Railways
CT series copper contact wire serves contact suspensions on conventional and heavy-haul lines; fatigue resistance suits heavy loads.
Urban Rail Transit
CT series copper contact wire is used in urban rail OCS, balancing current capacity and mechanical strength.
Coastal Corrosive Environments
Copper and copper alloy contact wires offer good atmospheric corrosion resistance for coastal and industrially polluted environments.
