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ENVILINE™ TDR - Traction Diode Rectifier

The most reliable and cost effective rectification solutions for DC rail transportation.

To power trains, metros and trams, it is necessary to use an electronic power converter (traction rectifier) to convert alternating current into direct current. The ENVILINE TDR (Traction Diode Rectifier) is the most reliable and cost effective rectification solution for DC rail transportation.

We have more than 50 years of experience in design, construction and commissioning of Traction Diode Rectifiers. Based on the proven robust technology, we offer standard and tailored solutions to minimize cost and risk. More than a thousand of our units are in successful operation in various applications around the world. The London Underground and Polish national railway infrastructure are among our most recent references.

Type testing:
All rectifiers are compliant with EN50328, IEC60146 and IEEE 1653.2 and offer overload class according to these standards. 
 
Cooling:
Natural cooling ensures low noise and practically maintenance free operation.

Protection philosophy:
TDRs are designed to withstand output short circuit conditions greater than 150 ms allowing ample time for external protection systems to trip. Reliable over voltage and surge suppression passive circuits are used to protect diode rectifier modules, AC inputs, DC output as well as control circuits. Two levels of over temperature protection and two level diode protection for redundant designs are part of the many protection and monitoring options that are available to meet any of our customer’s needs. 

For more information, please refer to the product brochure in the Downloads section.

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