Rail Transit Current Collection
Rail Transit Pantograph Carbon Strips
Carbon and metallized-carbon current collectors for overhead line, third-rail and special rail applications.
Product Overview
CONLUXS supplies carbon current collector assemblies and carbon profiles for pantographs. Options cover EMU, high-speed rail, locomotives, metro and light-rail projects, as well as third-rail and selected special-rail applications. Final grade, carrier and profile geometry are confirmed against the project data and approved drawing.
Available Collector Constructions
- Bonded: aluminium carrier and carbon profile joined with electrically conductive adhesive for low-weight, corrosion-resistant assemblies.
- Clamped: steel or copper carrier construction for conventional pantograph arrangements.
- Soldered: steel or copper carrier construction for higher mechanical load requirements.
- Composite: copper-shell construction for applications requiring high mechanical and electrical performance.
What Is It
Rail Transit Pantograph Carbon Strips — carbon and metallized-carbon current collectors for overhead line and third-rail applications.
Key Applications
EMU, high-speed rail, locomotives, metro and light-rail projects, as well as third-rail and selected special-rail applications.
Typical Assembly Performance
Specification Table
Typical assembly performance values to confirm during technical review. Confirm the selected grade, drawing and application conditions before order.
| Parameter | Typical value |
|---|---|
| Bond shear strength | > 5 N/mm² |
| Rated temperature resistance | 250°C |
| Short temperature exposure | 300°C for up to 1 minute |
| Short-circuit current load | Up to 30 kA |
| Carbon-to-carrier contact resistance | < 1.0 mOhm plain carbon; < 0.5 mOhm metallized carbon |
| Bonded construction bending load | Up to 3,500 N |
Representative Material Grades
Carbon Strip Current Collector Grades
Material grading and actual geometry are selected against line voltage, current, speed, contact wire and pantograph data.
| Grade | Density g/cm³ | S.E.R. microOhm m | Flexural MPa | Metal | Current load A/mm² |
|---|---|---|---|---|---|
| ECH22 | 1.70 | 38 | 35 | 0% | 4-6 |
| ECHP72 | 1.73 | 34 | 37 | 0% | 6-8 |
| ECH68C | 2.50 | 4 | 65 | 40% | 12-16 |
| ECHP72C | 2.30 | 5 | 65 | 35% | 12-15 |
| ECHP72B | 2.40 | 8 | 65 | 40% | 16-20 |
| ECF80 | 8.00 | 0.2 | 11 | 0% | 25-30 |
Grade Selection by Current Load
- Plain carbon (ECH22 / ECHP72): lower current-load grades at 4-8 A/mm², selected where contact-wire wear and collector mass are the controlling factors.
- Metallized carbon (ECH68C / ECHP72C / ECHP72B): higher current-load grades at 12-20 A/mm² for duties with higher current density.
- Special high-current grade (ECF80): 25-30 A/mm² for special high-current applications confirmed against project data.
Final grade, carrier and profile geometry are confirmed against the project data and approved drawing.
Rail Transit Applications
Applications
Carbon strip current collectors are selected against the line system and vehicle duty. CONLUXS supports the following rail applications:
- High-speed rail and EMU: pantograph carbon strips on overhead-line systems, where plain carbon grades (ECH22 / ECHP72) support lower current-load collection with controlled contact-wire wear.
- Metro and light rail: higher current-density DC collection with metallized-carbon grades (ECH68C / ECHP72C / ECHP72B) in bonded, clamped, soldered or composite carrier constructions.
- Electric locomotives: carbon strip current collectors matched to line voltage, current per pantograph and contact-wire details.
- Third-rail applications: carbon current collector arrangements for side-contact rail systems.
- Special rail applications: selected tram and industrial rail projects handled against approved drawings.
Grade, carrier and profile geometry are confirmed against the project data and approved drawing before supply.
Technical Selection Guide
Select in this order so the grade, carrier and profile match the real collector duty:
- Collection method: overhead line (pantograph strip) or third-rail (current collector arrangement).
- Confirm project data: line voltage, vehicle speed, current per pantograph, pantograph make and model, contact-wire details and existing profile dimensions. See railway traction power basics for the supply-side context.
- Choose the collector construction: bonded, clamped, soldered or composite against mechanical load and corrosion requirements.
- Match grade to current load: plain carbon 4-8 A/mm², metallized carbon 12-20 A/mm², or the special high-current grade at 25-30 A/mm².
- Check ADD / arc protection: confirm any automatic dropping device or arc-protection requirement with the approved drawing.
Work through the full pantograph carbon strip selection guide with the project data before placing an order.
Operation and Replacement
Store carbon strips dry and protected from shock. Use a torque-controlled wrench for installation. Plan replacement when residual carbon approaches 4-5 mm, measured from the upper edge to the aluminium carrier. Always follow the vehicle and pantograph manufacturer's maintenance procedures.
For replacement strip enquiries, use the Get Replacement Strip Quote option so the enquiry is routed to the correct team.
Frequently Asked Questions
What are Pantograph Carbon Strips?
Rail Transit Pantograph Carbon Strips are carbon and metallized-carbon current collectors for overhead line, third-rail, and special rail applications.
What vehicle types use these carbon strips?
These carbon strips cover EMU, high-speed rail, locomotives, metro, and light-rail projects, as well as third-rail and selected special-rail applications.
What construction methods are available?
Available construction methods include Bonded (aluminum carrier), Clamped (steel/copper carrier), Soldered, and Composite (copper-shell).
Send Your Drawing for a Technical Review
Share your pantograph model, current requirement and profile dimensions. CONLUXS will help match a suitable carbon strip configuration.