6RA7090-6KV62-0

The Siemens 6RA7090-6KV62-0 is a versatile DC 4Q converter, specifically constructed for rigorous industrial settings. Designed around a 6-pulse reversible bridge circuit, it efficiently converts three-phase AC input into DC output. The unit supports an AC supply voltage of 690 volts with a line current of 829 amperes. Upon conversion, it outputs a stable DC voltage of 725 volts alongside a DC current capacity reaching 1000 amperes. This configuration allows for high-performance power delivery, rated at 725 kilowatts.

Equipped with a field supply of 375 volts at 30 amperes, the device employs thyristors as its main power components. Its forced-air cooling system ensures that the converter remains at optimal operating temperatures, promoting sustained performance under load. The control is managed through a digital closed-loop system, enhancing accuracy and response times. This unit also incorporates protective features that prevent overload and commutation-related failures, further ensuring dependable operation.

Installation is via chassis mounting, facilitating integration into various setups. Notably, an upgrade path to the SINAMICS DCM series is available, providing flexibility for future enhancements or expansions. Additionally, the alternate US rating of 702 amperes at 725 volts demonstrates the converter's adaptability to different operating conditions.