The VLT Series Variable Frequency Drives are now available with power through 1,350 hp in 460 and 690 V a.c. and several frame models: F1 frame models boast up to 1,050 hp in an 86.8- X 55.1- X 23.9-in. footprint; and F2 models offer up to 1,350 hp in an 86.8- X 71.0- X 23.9-in. footprint. All models have components that are accessible from the front of the unit for improved serviceability and maintenance. Every drive in the VLT Series comes with a high-power F-frame size and a cooling design that utilizes ducted back channels to pass cooling air over heat sinks, minimizing air flow across sensitive electronic components. According to the firm, this method exhausts 85% of the heat losses directly outside of the device’s enclosure, which reduces the internal temperature as well as potential contamination of the electronics. A number of power, monitoring, enclosure, filtering, control and convenience options and accessories are available to enhance performance and operation. — Booth 21015 — Danfoss Drives, Milwaukee, Wis.
This Series of Variable Frequency Drives has been Designed to Reduce Thermal Degradation
| By Chemical Engineering