Blue train on a station

Case Study

High Speed Connectivity

Insulators, connectors, and fittings are needed to ensure connections across the new high speed rail line S.E.A., South Europe Atlantic.

The Challenge

302 km of High Speed Line and 40 km of Connection to the Existing Line

S.E.A. line will go through:

  • 3 regions
  • 6 departments
  • 113 towns
  • 320 km/h speed
  • 13,000 catenary poles

For a project of this scope, Vinci, the company who won the construction contract, needs insulators, connectors and fittings qualified by SNCF, the French national rail utility, to ensure connections across the line. They also needed a partner they could count on for rapid response and support.

Count on TE

A partner they could count on for rapid response and support

Being qualified by SNCF means:

  • Products are long lasting to reduce maintenance need and ensure safety
  • Products are reliable to ensure highest quality, allow network reliability and high speed train availability
  • Meet demanding specifications for high technical performances

The Solution

Decades of insulator design experience along with Raychem expertise

TE specially formulated EVA (Ethylene Vinyl Acetate) formulation brings a superior pollution resistant covering. It features a superior acid and chemical resistance advantage, stemming from the semi-crystalline structure of the base EVA polymer. This provides a key advantage over the softer amorphous structure of silicone insulators. 

Reliable and Long Lasting Solution

TE obtained the certification of the French National Authority, SNCF

Thanks to 10 years of studies and experimentation, TE offers a wide range of connectors and the patented droppers solution. Our dropper is articulated at both the upper and lower part in order to improve electrical and mechanical behavior. This connection dropper passed all the tests defined in SNCF specification (mechanical, electrical and oscillation tests). 

Solution Maker in Connectors and Fittings

SIMEL droppers are installed in France, UK, Belgium, Greece, and Korea

Our droppers offer high reliability in the field (installed for more than 15 years) and high performance. They were used when TGV Est beat rail speed record (574.8 km/h) on April 2007. Each connection dropper will be supplied to the customer at a defined length. This assembly is done in a TE workshop in French allowing for time saving during installation. 

The Outcome

Installation of a range of rail insulators on the French rail networks

This has allowed TE to become a key supplier in France for insulators product range specifically for High Speed Rail (HSR) projects. Our rail insulators are now being installed in Eastern France on the Paris to Strasbourg HSR extension project. Deliveries are also commencing for the S.E.A. project, from Tours to Bordeaux, which is currently under development. 


60,000 insulators for S.E.A.


20,000 insulators for high speed line East Extension 2


References of connectors and fittings, including 120,000 droppers