Compact drives, frequency converters, variable speed drives

Danfoss D-Frame VLT Drives can leverage back channel cooling and can be fitted optionally with semiconductor fuses. Smaller size reduces installation costs and increases flexibility.

08/17/2012


Side-by-side comparison of the new more compact D-Frame VLT Drive (left) next to the previous generation D-frame drive (right). Courtesy: DanfossDanfoss D-Frame VLT Drives are available in a power range from 125-450 hp (90-315 kW) and up to 68% smaller than previous generation D-Frame drives. This reduces installation costs and increases installation flexibility. These drives also leverage back channel cooling to remove 90% of the heat generated by the drive, reducing up front and ongoing costs and making them an ideal panel building solution, the company said.

The new drives are available with IP20, IP21 (NEMA 1) or IP 54 (NEMA 12) enclosure protection ratings. They also come standard with conformal coated printed circuit boards, which together with the optional heat sink access panel, help to extend drive lifetime and reliability. The new units can be factory-fitted with optional semiconductor fuses to further reduce installation costs. Additional factory-fitted basic input options -- such as mains disconnect, contactor, and circuit breaker -- eliminate the need to install these basic options externally.

D-Frame drives also use back-channel cooling concept to keep electronics safely within optimal operation temperatures. The big advantage of back-channel cooling is that system installation and operating costs can be dramatically reduced, according to the company.

Danfoss

www.danfoss.com 

- Edited by Chris Vavra, Control Engineering, www.controleng.com 



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