AuCom soft starters have been used since the 1990s to drain water from the Channel Tunnel linking Great Britain to Europe.
Soft starters were first selected to drain water during construction, and are still used to ensure smooth operation of this tunnel.
The Eurotunnel system consists of two rail tunnels, each 50 kilometres long, and a smaller service tunnel. Water is drained from the tunnels by large submersible pumps, and reliable operation is critical - there are more than 200 train movements in each direction every day.
Eurotunnel engineers sought a high-quality solution to control all pumping processes during excavation. Voltage disturbances, jammed pumps and fluid hammer could all bring this vital transport link to a standstill.
AuCom soft starters offer important features which keep the tunnel running smoothly:
Extensive motor and system protection features make AuCom soft starters the obvious choice for such a critical application:
From the outset, the Eurotunnel engineers knew they needed to work with an experienced supplier who could guarantee maximum reliability. In an international tender process, they selected AuCom ahead of its competitors for three good reasons: