Booster transformers

Booster transformers are used in electric railway AC catenary feeders to collect the return current from the rails and the earth and send it to the return conductor.

In railways, the electric current is taken from the catenary conductor to the locomotive, where the energy is used by electric motors and fed to the earth-connected rails, which are part of the return circuit. From the rails, however, the return current may deviate around to unintended or harmful places like metallic pipelines, bridges, communication cables, etc. The stray currents bring about interference in communication systems and other electronic devices due to passing trains. Booster transformers are used to eliminate the stray currents and the disturbances, obliging the return current to flow to the return conductor.

Key features

• Voltage: Typically up to 25 kV
• Power: Typically from 100 to 800 kVA
  
• Single-phase transformers with voltage ratio very close to 1:1

Applications

• Used in electric railway AC catenary to avoid voltage drops along the catenary
• Used to eliminate the stray currents and disturbances in communications systems and electronic devices, obliging the return current to flow to the return conductor instead through the ground
• Often used to improve old railway feeder systems

Precision and Quality

Quality is a priority for Hitachi Energy. Hitachi Energy offers technology leadership backed by a proven record of addressing diverse challenges and improving standards. Our product portfolio is the result of research, manufacturing, and servicing transformers, making us unique in the industry. Hitachi Energy's booster transformers are fully tested for precision and operations before dispatch.

Quick Quotes and Deliveries

We offer standard prices and quick delivery times for the products listed in Our Railway Portfolio. If necessary, our engineers can also provide customized solutions for your application.

Hitachi Energy offers a comprehensive portfolio of transformers for railways to meet our customers' evolving needs. We can bundle multiple accessories together so that transformer manufacturers can focus on delivering to their customers on time and without hassle.