Spring ATD
We International Transmission Limited (ITL) are the First Indian Company to be approved for Spring Type ATD for OHE Application.
- iTRA (ITL Tensioner for Railway Application) is a spring type auto Tensioning device; completely Designed and Made in India.
- It is a perfect substitute for conventional pulley – counter weight system and more cost efficient in the long run.
- iTRA has been developed considering Aatmanirbhar Bharat initiative and available in various sizes up to 30kN load.
Spring ATD
Spring type Auto Tensioning Device” in a railway system that utilizes a spring mechanism to automatically adjust the tension of overhead contact lines, ensuring smooth current collection by the pantograph on a train, by compensating for length changes in the lines due to temperature fluctuations; essentially, the device compresses or expands to maintain constant tension on the overhead lines, preventing sagging or excessive tension.
Key Features:
- Function: Maintains constant tension on overhead contact lines by automatically adjusting to temperature changes, which cause the lines to expand and contract.
- Mechanism: A spring system is incorporated into the ATD, which is designed to compresses or expand depending on the line length variation, thereby adjusting the tension.
- Design: Simple & Robust design. Maintenance free product as no bearings, wire rope, etc. are used.
- Importance in railway systems: Prevents issues like pantograph entanglement or snapping of overhead lines due to inconsistent tension caused by temperature fluctuations.